diff --git a/reference/math/functions/abs.xml b/reference/math/functions/abs.xml
index 6d6413d1c7..51a0a5d10b 100644
--- a/reference/math/functions/abs.xml
+++ b/reference/math/functions/abs.xml
@@ -1,27 +1,27 @@
-
+
-
-
- abs
- Absolute value
-
-
- Description
-
- numberabs
- mixednumber
-
-
- Returns the absolute value of number. If the
- argument number is
- of type float, the return type is also float,
- otherwise it is integer (as float usually has a
- bigger value range than integer).
-
-
- <function>abs</function> example
-
+
+
+ abs
+ Absolute value
+
+
+ Description
+
+ numberabs
+ mixednumber
+
+
+ Returns the absolute value of number. If the
+ argument number is
+ of type float, the return type is also float,
+ otherwise it is integer (as float usually has a
+ bigger value range than integer).
+
+
+ <function>abs</function> example
+
]]>
-
-
-
-
+
+
+
+
+
-
-
- acos
- Arc cosine
-
-
- Description
-
- floatacos
- floatarg
-
-
- Returns the arc cosine of arg in radians.
- acos is the complementary function of
- cos, which means that
- a==cos(acos(a)) for every value of a that is within
- acos' range.
-
-
- See also:
- acosh,
- asin, and
- atan.
-
-
-
+
+
+ acos
+ Arc cosine
+
+
+ Description
+
+ floatacos
+ floatarg
+
+
+ Returns the arc cosine of arg in radians.
+ acos is the complementary function of
+ cos, which means that
+ a==cos(acos(a)) for every value of a that is within
+ acos' range.
+
+
+ See also:
+ acosh,
+ asin, and
+ atan.
+
+
+
+
-
-
- acosh
- Inverse hyperbolic cosine
-
-
- Description
-
- floatacosh
- floatarg
-
-
- Returns the inverse hyperbolic cosine of
- arg, i.e. the value whose
- hyperbolic cosine is arg.
-
- ¬e.no-windows;
-
- See also:
- acos,
- asinh, and
- atanh.
-
-
-
+
+
+ acosh
+ Inverse hyperbolic cosine
+
+
+ Description
+
+ floatacosh
+ floatarg
+
+
+ Returns the inverse hyperbolic cosine of
+ arg, i.e. the value whose
+ hyperbolic cosine is arg.
+
+ ¬e.no-windows;
+
+ See also:
+ acos,
+ asinh, and
+ atanh.
+
+
+
+
-
-
- asin
- Arc sine
-
-
- Description
-
- floatasin
- floatarg
-
-
- Returns the arc sine of arg in radians.
- asin is the complementary function of
- sin, which means that
- a==sin(asin(a)) for every value of a that is within
- asin's range.
-
-
- See also:
- asinh,
- acos, and
- atan.
-
-
-
+
+
+ asin
+ Arc sine
+
+
+ Description
+
+ floatasin
+ floatarg
+
+
+ Returns the arc sine of arg in radians.
+ asin is the complementary function of
+ sin, which means that
+ a==sin(asin(a)) for every value of a that is within
+ asin's range.
+
+
+ See also:
+ asinh,
+ acos, and
+ atan.
+
+
+
+
-
-
- asinh
- Inverse hyperbolic sine
-
-
- Description
-
- floatasinh
- floatarg
-
-
- Returns the inverse hyperbolic sine of
- arg, i.e. the value whose
- hyperbolic sine is arg.
-
- ¬e.no-windows;
-
- See also:
- asin,
- acosh, and
- atanh.
-
-
-
+
+
+ asinh
+ Inverse hyperbolic sine
+
+
+ Description
+
+ floatasinh
+ floatarg
+
+
+ Returns the inverse hyperbolic sine of
+ arg, i.e. the value whose
+ hyperbolic sine is arg.
+
+ ¬e.no-windows;
+
+ See also:
+ asin,
+ acosh, and
+ atanh.
+
+
+
+
-
-
- atan
- Arc tangent
-
-
- Description
-
- floatatan
- floatarg
-
-
- Returns the arc tangent of arg in radians.
- atan is the complementary function of
- tan, which means that
- a==tan(atan(a)) for every value of a that is within
- atan's range.
-
-
- See also:
- atanh,
- asin, and
- acos.
-
-
-
+
+
+ atan
+ Arc tangent
+
+
+ Description
+
+ floatatan
+ floatarg
+
+
+ Returns the arc tangent of arg in radians.
+ atan is the complementary function of
+ tan, which means that
+ a==tan(atan(a)) for every value of a that is within
+ atan's range.
+
+
+ See also:
+ atanh,
+ asin, and
+ acos.
+
+
+
+
-
-
- atan2
- Arc tangent of two variables
-
-
- Description
-
- floatatan2
- floaty
- floatx
-
-
- This function calculates the arc tangent of the two variables
- x and y. It is
- similar to calculating the arc tangent of
- y / x, except that
- the signs of both arguments are used to determine the quadrant of
- the result.
-
-
- The function returns the result in radians, which is between -PI
- and PI (inclusive).
-
-
- See also acos and atan.
-
-
-
+
+
+ atan2
+ Arc tangent of two variables
+
+
+ Description
+
+ floatatan2
+ floaty
+ floatx
+
+
+ This function calculates the arc tangent of the two variables
+ x and y. It is
+ similar to calculating the arc tangent of
+ y / x, except that
+ the signs of both arguments are used to determine the quadrant of
+ the result.
+
+
+ The function returns the result in radians, which is between -PI
+ and PI (inclusive).
+
+
+ See also acos and atan.
+
+
+
+
-
-
- atanh
- Inverse hyperbolic tangent
-
-
- Description
-
- floatatanh
- floatarg
-
-
- Returns the inverse hyperbolic tangent of
- arg, i.e. the value whose
- hyperbolic tangent is arg.
-
- ¬e.no-windows;
-
- See also:
- atan,
- asinh, and
- acosh.
-
-
-
+
+
+ atanh
+ Inverse hyperbolic tangent
+
+
+ Description
+
+ floatatanh
+ floatarg
+
+
+ Returns the inverse hyperbolic tangent of
+ arg, i.e. the value whose
+ hyperbolic tangent is arg.
+
+ ¬e.no-windows;
+
+ See also:
+ atan,
+ asinh, and
+ acosh.
+
+
+
+
-
-
- base_convert
- Convert a number between arbitrary bases
-
-
- Description
-
- stringbase_convert
- stringnumber
- intfrombase
- inttobase
-
-
- Returns a string containing number
- represented in base tobase. The base in
- which number is given is specified in
- frombase. Both
- frombase and tobase
- have to be between 2 and 36, inclusive. Digits in numbers with a
- base higher than 10 will be represented with the letters a-z,
- with a meaning 10, b meaning 11 and z meaning 35.
-
- <function>base_convert</function> example
-
+
+
+ base_convert
+ Convert a number between arbitrary bases
+
+
+ Description
+
+ stringbase_convert
+ stringnumber
+ intfrombase
+ inttobase
+
+
+ Returns a string containing number
+ represented in base tobase. The base in
+ which number is given is specified in
+ frombase. Both
+ frombase and tobase
+ have to be between 2 and 36, inclusive. Digits in numbers with a
+ base higher than 10 will be represented with the letters a-z,
+ with a meaning 10, b meaning 11 and z meaning 35.
+
+ <function>base_convert</function> example
+
]]>
-
-
- Outputs:
-
-
+
+
+ Outputs:
+
+
-
-
-
-
-
- base_convert may lose precision on large numbers
- due to properties related to the internal "double" or "float" type used.
- Please see the Floating point numbers
- section in the manual for more specific information and limitations.
-
-
-
- See also: intval.
-
-
-
+
+
+
+
+
+ base_convert may lose precision on large numbers
+ due to properties related to the internal "double" or "float" type used.
+ Please see the Floating point numbers
+ section in the manual for more specific information and limitations.
+
+
+
+ See also: intval.
+
+
+
+
-
-
- bindec
- Binary to decimal
-
-
- Description
-
- numberbindec
- stringbinary_string
-
-
- Returns the decimal equivalent of the binary number represented by
- the binary_string argument.
-
-
- bindec converts a binary number to an
- integer. The largest number that can be converted is
- 31 bits of 1's or 2147483647 in decimal.
- As of PHP 4.1.0, this function can also convert larger numbers. It returns
- float in that case.
-
-
-
- <function>bindec</function> example
-
+
+
+ bindec
+ Binary to decimal
+
+
+ Description
+
+ numberbindec
+ stringbinary_string
+
+
+ Returns the decimal equivalent of the binary number represented by
+ the binary_string argument.
+
+
+ bindec converts a binary number to an
+ integer. The largest number that can be converted is
+ 31 bits of 1's or 2147483647 in decimal.
+ As of PHP 4.1.0, this function can also convert larger numbers. It returns
+ float in that case.
+
+
+
+ <function>bindec</function> example
+
]]>
-
- &example.outputs;
-
+
+ &example.outputs;
+
-
-
-
-
- See also decbin,
- octdec,
- hexdec and
- base_convert.
-
-
-
+
+
+
+
+ See also decbin,
+ octdec,
+ hexdec and
+ base_convert.
+
+
+
+
-
-
- ceil
- Round fractions up
-
-
- Description
-
- floatceil
- floatvalue
-
-
- Returns the next highest integer value by rounding up
- value if necessary.
- The return value of ceil is still of type
- float as the value range of float is
- usually bigger than that of integer.
-
-
-
- <function>ceil</function> example
-
+
+
+ ceil
+ Round fractions up
+
+
+ Description
+
+ floatceil
+ floatvalue
+
+
+ Returns the next highest integer value by rounding up
+ value if necessary.
+ The return value of ceil is still of type
+ float as the value range of float is
+ usually bigger than that of integer.
+
+
+
+ <function>ceil</function> example
+
]]>
-
-
-
-
- See also floor and
- round.
-
-
-
+
+
+
+
+ See also floor and
+ round.
+
+
+
+
-
-
- cos
- Cosine
-
-
- Description
-
- floatcos
- floatarg
-
-
- cos returns the cosine of the arg
- parameter. The arg parameter is in radians.
-
-
-
- <function>cos</function> example
-
+
+
+ cos
+ Cosine
+
+
+ Description
+
+ floatcos
+ floatarg
+
+
+ cos returns the cosine of the arg
+ parameter. The arg parameter is in radians.
+
+
+
+ <function>cos</function> example
+
]]>
-
-
-
-
- See also:
- acos,
- sin,
- tan, and
- deg2rad.
-
-
-
+
+
+
+
+ See also:
+ acos,
+ sin,
+ tan, and
+ deg2rad.
+
+
+
+
-
-
- cosh
- Hyperbolic cosine
-
-
- Description
-
- floatcosh
- floatarg
-
-
- Returns the hyperbolic cosine of arg,
- defined as (exp(arg) + exp(-arg))/2.
-
-
- See also:
- cos,
- acosh,
- sin, and
- tan.
-
-
-
+
+
+ cosh
+ Hyperbolic cosine
+
+
+ Description
+
+ floatcosh
+ floatarg
+
+
+ Returns the hyperbolic cosine of arg,
+ defined as (exp(arg) + exp(-arg))/2.
+
+
+ See also:
+ cos,
+ acosh,
+ sin, and
+ tan.
+
+
+
+
-
-
- decbin
- Decimal to binary
-
-
- Description
-
- stringdecbin
- intnumber
-
-
- Returns a string containing a binary representation of the given
- number argument. The largest number that can be converted is
- 4294967295 in decimal resulting to a string of 32 1's.
-
-
-
- <function>decbin</function> example
-
+
+
+ decbin
+ Decimal to binary
+
+
+ Description
+
+ stringdecbin
+ intnumber
+
+
+ Returns a string containing a binary representation of the given
+ number argument. The largest number that can be converted is
+ 4294967295 in decimal resulting to a string of 32 1's.
+
+
+
+ <function>decbin</function> example
+
]]>
-
- &example.outputs;
-
+
+ &example.outputs;
+
-
-
-
-
- See also bindec,
- decoct,
- dechex and
- base_convert.
-
-
-
+
+
+
+
+ See also bindec,
+ decoct,
+ dechex and
+ base_convert.
+
+
+
+
-
-
- dechex
- Decimal to hexadecimal
-
-
- Description
-
- stringdechex
- intnumber
-
-
- Returns a string containing a hexadecimal representation of the
- given number argument. The largest number that can
- be converted is 4294967295 in decimal resulting to "ffffffff".
-
-
-
- <function>dechex</function> example
-
+
+
+ dechex
+ Decimal to hexadecimal
+
+
+ Description
+
+ stringdechex
+ intnumber
+
+
+ Returns a string containing a hexadecimal representation of the
+ given number argument. The largest number that can
+ be converted is 4294967295 in decimal resulting to "ffffffff".
+
+
+
+ <function>dechex</function> example
+
]]>
-
- &example.outputs;
-
+
+ &example.outputs;
+
-
-
-
-
- See also hexdec,
- decbin,
- decoct and
- base_convert.
-
-
-
+
+
+
+
+ See also hexdec,
+ decbin,
+ decoct and
+ base_convert.
+
+
+
+
-
-
- decoct
- Decimal to octal
-
-
- Description
-
- stringdecoct
- intnumber
-
-
- Returns a string containing an octal representation of the given
- number argument. The largest number that can be converted is
- 4294967295 in decimal resulting to "37777777777".
-
-
-
- <function>decoct</function> example
-
+
+
+ decoct
+ Decimal to octal
+
+
+ Description
+
+ stringdecoct
+ intnumber
+
+
+ Returns a string containing an octal representation of the given
+ number argument. The largest number that can be converted is
+ 4294967295 in decimal resulting to "37777777777".
+
+
+
+ <function>decoct</function> example
+
]]>
-
- &example.outputs;
-
+
+ &example.outputs;
+
-
-
-
-
- See also octdec,
- decbin,
- dechex and
- base_convert.
-
-
-
+
+
+
+
+ See also octdec,
+ decbin,
+ dechex and
+ base_convert.
+
+
+
+
-
-
- deg2rad
-
- Converts the number in degrees to the radian equivalent
-
-
-
- Description
-
- floatdeg2rad
- floatnumber
-
-
- This function converts number from degrees
- to the radian equivalent.
-
-
-
- <function>deg2rad</function> example
-
+
+
+ deg2rad
+
+ Converts the number in degrees to the radian equivalent
+
+
+
+ Description
+
+ floatdeg2rad
+ floatnumber
+
+
+ This function converts number from degrees
+ to the radian equivalent.
+
+
+
+ <function>deg2rad</function> example
+
]]>
-
-
-
-
- See also rad2deg.
-
-
-
+
+
+
+
+ See also rad2deg.
+
+
+
+
-
-
- exp
- Calculates the exponent of e
-
-
- Description
-
- floatexp
- floatarg
-
-
- Returns e raised to the power of arg.
-
-
-
- 'e' is the base of the natural system of logarithms, or approximately
- 2.718282.
-
-
-
-
- <function>exp</function> example
-
+
+
+ exp
+ Calculates the exponent of e
+
+
+ Description
+
+ floatexp
+ floatarg
+
+
+ Returns e raised to the power of arg.
+
+
+
+ 'e' is the base of the natural system of logarithms, or approximately
+ 2.718282.
+
+
+
+
+ <function>exp</function> example
+
]]>
-
- &example.outputs;
-
+
+ &example.outputs;
+
-
-
-
-
- See also
- log and
- pow.
-
-
-
+
+
+
+
+ See also
+ log and
+ pow.
+
+
+
+
-
-
- expm1
-
- Returns exp(number) - 1, computed in a way that is accurate even
- when the value of number is close to zero
-
-
-
- Description
-
- floatexpm1
- floatnumber
-
- &warn.experimental.func;
-
- expm1 returns the equivalent to
- 'exp(number) - 1' computed in a way that is
- accurate even if the value of number is near zero,
- a case where 'exp (number) - 1' would be
- inaccurate due to subtraction of two numbers that are nearly equal.
-
- ¬e.no-windows;
-
- See also log1p and
- exp.
-
-
-
+
+
+ expm1
+
+ Returns exp(number) - 1, computed in a way that is accurate even
+ when the value of number is close to zero
+
+
+
+ Description
+
+ floatexpm1
+ floatnumber
+
+ &warn.experimental.func;
+
+ expm1 returns the equivalent to
+ 'exp(number) - 1' computed in a way that is
+ accurate even if the value of number is near zero,
+ a case where 'exp (number) - 1' would be
+ inaccurate due to subtraction of two numbers that are nearly equal.
+
+ ¬e.no-windows;
+
+ See also log1p and
+ exp.
+
+
+
+
-
-
- floor
- Round fractions down
-
-
- Description
-
- floatfloor
- floatvalue
-
-
- Returns the next lowest integer value by rounding down
- value if necessary.
- The return value of floor is still of type
- float because the value range of float is
- usually bigger than that of integer.
-
-
-
- <function>floor</function> example
-
+
+
+ floor
+ Round fractions down
+
+
+ Description
+
+ floatfloor
+ floatvalue
+
+
+ Returns the next lowest integer value by rounding down
+ value if necessary.
+ The return value of floor is still of type
+ float because the value range of float is
+ usually bigger than that of integer.
+
+
+
+ <function>floor</function> example
+
]]>
-
-
-
-
- See also ceil and
- round.
-
-
-
+
+
+
+
+ See also ceil and
+ round.
+
+
+
-
-
- fmod
- Returns the floating point remainder (modulo) of the division
- of the arguments
-
-
- Description
-
- floatfmod
- floatx
- floaty
-
-
- Returns the floating point remainder of dividing the dividend
- (x) by the divisor (y).
- The reminder (r) is defined as: x = i * y + r, for
- some integer i. If y is
- non-zero, r has the same sign as
- x and a magnitude less than the magnitude of
- y.
-
-
-
- Using <function>fmod</function>
-
+
+
+
+ fmod
+ Returns the floating point remainder (modulo) of the division
+ of the arguments
+
+
+ Description
+
+ floatfmod
+ floatx
+ floaty
+
+
+ Returns the floating point remainder of dividing the dividend
+ (x) by the divisor (y).
+ The reminder (r) is defined as: x = i * y + r, for
+ some integer i. If y is
+ non-zero, r has the same sign as
+ x and a magnitude less than the magnitude of
+ y.
+
+
+
+ Using <function>fmod</function>
+
]]>
-
-
-
-
-
+
+
+
+
+
+
-
-
- getrandmax
- Show largest possible random value
-
-
- Description
-
- intgetrandmax
-
-
-
- Returns the maximum value that can be returned by a call to
- rand.
-
-
- See also rand, srand
- and mt_getrandmax.
-
-
-
+
+
+ getrandmax
+ Show largest possible random value
+
+
+ Description
+
+ intgetrandmax
+
+
+
+ Returns the maximum value that can be returned by a call to
+ rand.
+
+
+ See also rand, srand
+ and mt_getrandmax.
+
+
+
+
-
-
- hexdec
- Hexadecimal to decimal
-
-
- Description
-
- numberhexdec
- stringhex_string
-
-
- Returns the decimal equivalent of the hexadecimal number
- represented by the hex_string argument.
- hexdec converts a hexadecimal string to a
- decimal number. The largest number that can be converted is
- 7fffffff or 2147483647 in decimal.
- As of PHP 4.1.0, this function can also convert larger numbers. It returns
- float in that case.
-
-
- hexdec will ignore any non-hexadecimal
- characters it encounters.
-
- <function>hexdec</function> example
-
+
+
+ hexdec
+ Hexadecimal to decimal
+
+
+ Description
+
+ numberhexdec
+ stringhex_string
+
+
+ Returns the decimal equivalent of the hexadecimal number
+ represented by the hex_string argument.
+ hexdec converts a hexadecimal string to a
+ decimal number. The largest number that can be converted is
+ 7fffffff or 2147483647 in decimal.
+ As of PHP 4.1.0, this function can also convert larger numbers. It returns
+ float in that case.
+
+
+ hexdec will ignore any non-hexadecimal
+ characters it encounters.
+
+ <function>hexdec</function> example
+
]]>
-
-
-
-
- See also dechex,
- bindec,
- octdec and
- base_convert.
-
-
-
+
+
+
+
+ See also dechex,
+ bindec,
+ octdec and
+ base_convert.
+
+
+
+
-
-
- hypot
-
- Calculate the length of the hypotenuse of a right-angle triangle
-
-
-
- Description
-
- floathypot
- floatx
- floaty
-
-
- hypot returns the length of the hypotenuse of a
- right-angle triangle with sides of length x and
- y, or the distance of the point
- (x, y) from the origin.
- This is equivalent to sqrt(x*x + y*y).
-
-
-
+
+
+ hypot
+
+ Calculate the length of the hypotenuse of a right-angle triangle
+
+
+
+ Description
+
+ floathypot
+ floatx
+ floaty
+
+
+ hypot returns the length of the hypotenuse of a
+ right-angle triangle with sides of length x and
+ y, or the distance of the point
+ (x, y) from the origin.
+ This is equivalent to sqrt(x*x + y*y).
+
+
+
+
-
-
- is_finite
- Finds whether a value is a legal finite number
-
-
- Description
-
- boolis_finite
- floatval
-
-
- Returns &true; if val is a legal finite
- number within the allowed range for a PHP float on this platform.
-
-
- See also is_infinite and
- is_nan.
-
-
-
+
+
+ is_finite
+ Finds whether a value is a legal finite number
+
+
+ Description
+
+ boolis_finite
+ floatval
+
+
+ Returns &true; if val is a legal finite
+ number within the allowed range for a PHP float on this platform.
+
+
+ See also is_infinite and
+ is_nan.
+
+
+
+
-
-
- is_infinite
- Finds whether a value is infinite
-
-
- Description
-
- boolis_infinite
- floatval
-
-
- Returns &true; if val is infinite (positive or
- negative), like the result of log(0) or any value too
- big to fit into a float on this platform.
-
-
- See also is_finite and
- is_nan.
-
-
-
+
+
+ is_infinite
+ Finds whether a value is infinite
+
+
+ Description
+
+ boolis_infinite
+ floatval
+
+
+ Returns &true; if val is infinite (positive or
+ negative), like the result of log(0) or any value too
+ big to fit into a float on this platform.
+
+
+ See also is_finite and
+ is_nan.
+
+
+
+
-
-
- is_nan
- Finds whether a value is not a number
-
-
- Description
-
- boolis_nan
- floatval
-
-
- Returns &true; if val is 'not a number',
- like the result of acos(1.01).
-
-
- See also is_finite and
- is_infinite.
-
-
-
+
+
+ is_nan
+ Finds whether a value is not a number
+
+
+ Description
+
+ boolis_nan
+ floatval
+
+
+ Returns &true; if val is 'not a number',
+ like the result of acos(1.01).
+
+
+ See also is_finite and
+ is_infinite.
+
+
+
+
-
-
- lcg_value
- Combined linear congruential generator
-
-
- Description
-
- floatlcg_value
-
-
-
- lcg_value returns a pseudo random number in
- the range of (0, 1). The function combines two CGs with periods
- of 2^31 - 85 and 2^31 - 249. The period of this function is equal
- to the product of both primes.
-
-
-
+
+
+ lcg_value
+ Combined linear congruential generator
+
+
+ Description
+
+ floatlcg_value
+
+
+
+ lcg_value returns a pseudo random number in
+ the range of (0, 1). The function combines two CGs with periods
+ of 2^31 - 85 and 2^31 - 249. The period of this function is equal
+ to the product of both primes.
+
+
+
+
-
-
- log
- Natural logarithm
-
-
- Description
-
- floatlog
- floatarg
- floatbase
-
-
- If the optional base parameter is specified,
- log returns logbase
- arg, otherwise log
- returns the natural logarithm of arg.
-
-
-
- The base parameter became available
- with PHP 4.3.0.
-
-
- As always you can calculate the logarithm in base b
- of a number n, but using the mathematical identity:
- logb(n) = log(n)/log(b), where log is the
- neperian (or natural) logarithm.
-
-
-
- See also exp.
-
-
-
+
+
+ log
+ Natural logarithm
+
+
+ Description
+
+ floatlog
+ floatarg
+ floatbase
+
+
+ If the optional base parameter is specified,
+ log returns logbase
+ arg, otherwise log
+ returns the natural logarithm of arg.
+
+
+
+ The base parameter became available
+ with PHP 4.3.0.
+
+
+ As always you can calculate the logarithm in base b
+ of a number n, but using the mathematical identity:
+ logb(n) = log(n)/log(b), where log is the
+ neperian (or natural) logarithm.
+
+
+
+ See also exp.
+
+
+
+
-
-
- log10
- Base-10 logarithm
-
-
- Description
-
- floatlog10
- floatarg
-
-
- Returns the base-10 logarithm of arg.
-
-
- See Also:
- log
-
-
-
+
+
+ log10
+ Base-10 logarithm
+
+
+ Description
+
+ floatlog10
+ floatarg
+
+
+ Returns the base-10 logarithm of arg.
+
+
+ See Also:
+ log
+
+
+
+
-
-
- log1p
-
- Returns log(1 + number), computed in a way that is accurate even when
- the value of number is close to zero
-
-
-
- Description
-
- floatlog1p
- floatnumber
-
- &warn.experimental.func;
-
- log1p returns log(1 +
- number) computed in a way that is accurante even
- when the value of number is close to zero.
-
- ¬e.no-windows;
-
- See also expm1 and
- log.
-
-
-
+
+
+ log1p
+
+ Returns log(1 + number), computed in a way that is accurate even when
+ the value of number is close to zero
+
+
+
+ Description
+
+ floatlog1p
+ floatnumber
+
+ &warn.experimental.func;
+
+ log1p returns log(1 +
+ number) computed in a way that is accurante even
+ when the value of number is close to zero.
+
+ ¬e.no-windows;
+
+ See also expm1 and
+ log.
+
+
+
+
-
-
- max
- Find highest value
-
-
- Description
-
- mixedmax
- numberarg1
- numberarg2
- number...
-
-
- mixedmax
- arraynumbers
-
-
- max returns the numerically highest of the
- parameter values.
-
-
- If the first and only parameter is an array, max
- returns the highest value in that array. If the first parameter
- is an integer, string or float, you need at least two parameters
- and max returns the biggest of these values.
- You can compare an unlimited number of values.
-
-
-
- PHP will evaluate a non-numeric string as
- 0, but still return the string if it's seen as the
- numerically highest value. If multiple arguments evaluate to
- 0, max will return a numeric
- 0 if given, else the alphabetical highest string
- value will be returned.
-
-
-
-
- Example uses of <function>max</function>
-
+
+
+ max
+ Find highest value
+
+
+ Description
+
+ mixedmax
+ numberarg1
+ numberarg2
+ number...
+
+
+ mixedmax
+ arraynumbers
+
+
+ max returns the numerically highest of the
+ parameter values.
+
+
+ If the first and only parameter is an array, max
+ returns the highest value in that array. If the first parameter
+ is an integer, string or float, you need at least two parameters
+ and max returns the biggest of these values.
+ You can compare an unlimited number of values.
+
+
+
+ PHP will evaluate a non-numeric string as
+ 0, but still return the string if it's seen as the
+ numerically highest value. If multiple arguments evaluate to
+ 0, max will return a numeric
+ 0 if given, else the alphabetical highest string
+ value will be returned.
+
+
+
+
+ Example uses of <function>max</function>
+
]]>
-
-
-
-
- See also min and
- count.
-
-
-
+
+
+
+
+ See also min and
+ count.
+
+
+
+
-
-
- min
- Find lowest value
-
-
- Description
-
- mixedmin
- numberarg1
- numberarg2
- number...
-
-
- mixedmin
- arraynumbers
-
-
- min returns the numerically lowest of the
- parameter values.
-
-
- If the first and only parameter is an array, min
- returns the lowest value in that array. If the first parameter
- is an integer, string or float, you need at least two parameters
- and min returns the smallest of these values.
- You can compare an unlimited number of values.
-
-
-
- PHP will evaluate a non-numeric string as
- 0, but still return the string if it's seen as the
- numerically lowest value. If multiple arguments evaluate to
- 0, min will return the lowest
- alphanumerical string value if any strings are given, else a numeric
- 0 is returned.
-
-
-
-
- Example uses of <function>min</function>
-
+
+
+ min
+ Find lowest value
+
+
+ Description
+
+ mixedmin
+ numberarg1
+ numberarg2
+ number...
+
+
+ mixedmin
+ arraynumbers
+
+
+ min returns the numerically lowest of the
+ parameter values.
+
+
+ If the first and only parameter is an array, min
+ returns the lowest value in that array. If the first parameter
+ is an integer, string or float, you need at least two parameters
+ and min returns the smallest of these values.
+ You can compare an unlimited number of values.
+
+
+
+ PHP will evaluate a non-numeric string as
+ 0, but still return the string if it's seen as the
+ numerically lowest value. If multiple arguments evaluate to
+ 0, min will return the lowest
+ alphanumerical string value if any strings are given, else a numeric
+ 0 is returned.
+
+
+
+
+ Example uses of <function>min</function>
+
]]>
-
-
-
-
- See also max and
- count.
-
-
-
+
+
+
+
+ See also max and
+ count.
+
+
+
+
-
-
- mt_getrandmax
- Show largest possible random value
-
-
- Description
-
- intmt_getrandmax
-
-
-
- Returns the maximum value that can be returned by a call to
- mt_rand.
-
-
- See also:
- mt_rand,
- mt_srand, and
- getrandmax.
-
-
-
+
+
+ mt_getrandmax
+ Show largest possible random value
+
+
+ Description
+
+ intmt_getrandmax
+
+
+
+ Returns the maximum value that can be returned by a call to
+ mt_rand.
+
+
+ See also:
+ mt_rand,
+ mt_srand, and
+ getrandmax.
+
+
+
+
-
-
- mt_rand
- Generate a better random value
-
-
- Description
-
- intmt_rand
- intmin
- intmax
-
-
- Many random number generators of older libcs have dubious or
- unknown characteristics and are slow. By default, PHP uses the
- libc random number generator with the rand
- function. The mt_rand function is a drop-in
- replacement for this. It uses a random number generator with
- known characteristics using the
- Mersenne Twister, which will produce random numbers four times
- faster than what the average libc rand() provides.
-
-
- If called without the optional min,
- max arguments mt_rand
- returns a pseudo-random value between 0 and
- RAND_MAX. If you want a random number
- between 5 and 15 (inclusive), for example, use mt_rand
- (5, 15).
-
-
-
- <function>mt_rand</function> example
-
+
+
+ mt_rand
+ Generate a better random value
+
+
+ Description
+
+ intmt_rand
+ intmin
+ intmax
+
+
+ Many random number generators of older libcs have dubious or
+ unknown characteristics and are slow. By default, PHP uses the
+ libc random number generator with the rand
+ function. The mt_rand function is a drop-in
+ replacement for this. It uses a random number generator with
+ known characteristics using the
+ Mersenne Twister, which will produce random numbers four times
+ faster than what the average libc rand() provides.
+
+
+ If called without the optional min,
+ max arguments mt_rand
+ returns a pseudo-random value between 0 and
+ RAND_MAX. If you want a random number
+ between 5 and 15 (inclusive), for example, use mt_rand
+ (5, 15).
+
+
+
+ <function>mt_rand</function> example
+
]]>
-
- &example.outputs.similar;
-
+
+ &example.outputs.similar;
+
-
-
-
- ¬e.randomseed;
+
+
+
+ ¬e.randomseed;
-
-
- In versions before 3.0.7 the meaning of
- max was range. To
- get the same results in these versions the short example should
- be mt_rand (5, 11) to get a random number
- between 5 and 15.
-
-
-
- See also:
- mt_srand,
- mt_getrandmax, and
- rand.
-
-
-
+
+
+ In versions before 3.0.7 the meaning of
+ max was range. To
+ get the same results in these versions the short example should
+ be mt_rand (5, 11) to get a random number
+ between 5 and 15.
+
+
+
+ See also:
+ mt_srand,
+ mt_getrandmax, and
+ rand.
+
+
+
+
-
-
- mt_srand
- Seed the better random number generator
-
-
- Description
-
- voidmt_srand
- intseed
-
-
- Seeds the random number generator with
- seed.
- Since PHP 4.2.0, the seed
- becomes optional and defaults to a random value if omitted.
-
-
-
- <function>mt_srand</function> example
-
+
+
+ mt_srand
+ Seed the better random number generator
+
+
+ Description
+
+ voidmt_srand
+ intseed
+
+
+ Seeds the random number generator with
+ seed.
+ Since PHP 4.2.0, the seed
+ becomes optional and defaults to a random value if omitted.
+
+
+
+ <function>mt_srand</function> example
+
]]>
-
-
-
+
+
+
- ¬e.randomseed;
+ ¬e.randomseed;
-
- See also:
- mt_rand,
- mt_getrandmax, and
- srand.
-
-
-
+
+ See also:
+ mt_rand,
+ mt_getrandmax, and
+ srand.
+
+
+
+
-
-
- octdec
- Octal to decimal
-
-
- Description
-
- numberoctdec
- stringoctal_string
-
-
- Returns the decimal equivalent of the octal number
- represented by the octal_string argument.
- The largest number that can be converted is 17777777777 or 2147483647 in
- decimal.
- As of PHP 4.1.0, this function can also convert larger numbers. It returns
- float in that case.
-
-
-
- <function>octdec</function> example
-
+
+
+ octdec
+ Octal to decimal
+
+
+ Description
+
+ numberoctdec
+ stringoctal_string
+
+
+ Returns the decimal equivalent of the octal number
+ represented by the octal_string argument.
+ The largest number that can be converted is 17777777777 or 2147483647 in
+ decimal.
+ As of PHP 4.1.0, this function can also convert larger numbers. It returns
+ float in that case.
+
+
+
+ <function>octdec</function> example
+
]]>
-
- &example.outputs;
-
+
+ &example.outputs;
+
-
-
-
-
- See also:
- decoct,
- bindec,
- hexdec, and
- base_convert.
-
-
-
+
+
+
+
+ See also:
+ decoct,
+ bindec,
+ hexdec, and
+ base_convert.
+
+
+
+
-
-
- pi
- Get value of pi
-
-
- Description
-
- floatpi
-
-
-
- Returns an approximation of pi. The returned float
- has a precision based on the
- precision directive in
- &php.ini;, which defaults to 14.
- Also, you can use the M_PI constant which yields
- identical results to pi.
-
-
-
- <function>pi</function> example
-
+
+
+ pi
+ Get value of pi
+
+
+ Description
+
+ floatpi
+
+
+
+ Returns an approximation of pi. The returned float
+ has a precision based on the
+ precision directive in
+ &php.ini;, which defaults to 14.
+ Also, you can use the M_PI constant which yields
+ identical results to pi.
+
+
+
+ <function>pi</function> example
+
]]>
-
-
-
-
-
+
+
+
+
+
+
-
-
- pow
- Exponential expression
-
-
- Description
-
- numberpow
- numberbase
- numberexp
-
-
- Returns base raised to the power of
- exp. If possible, this function will
- return an integer.
-
-
- If the power cannot be computed, a warning will be issued,
- and pow will return &false;. Since PHP 4.2.0
- pow doesn't issue any warning.
-
-
-
- PHP cannot handle negative exps.
-
-
-
- Some examples of <function>pow</function>
-
+
+
+ pow
+ Exponential expression
+
+
+ Description
+
+ numberpow
+ numberbase
+ numberexp
+
+
+ Returns base raised to the power of
+ exp. If possible, this function will
+ return an integer.
+
+
+ If the power cannot be computed, a warning will be issued,
+ and pow will return &false;. Since PHP 4.2.0
+ pow doesn't issue any warning.
+
+
+
+ PHP cannot handle negative exps.
+
+
+
+ Some examples of <function>pow</function>
+
]]>
-
-
-
-
- In PHP 4.0.6 and earlier pow always returned
- a float, and did not issue warnings.
-
-
-
- See also:
- exp,
- sqrt,
- bcpow, and
- gmp_pow,
-
-
-
+
+
+
+
+ In PHP 4.0.6 and earlier pow always returned
+ a float, and did not issue warnings.
+
+
+
+ See also:
+ exp,
+ sqrt,
+ bcpow, and
+ gmp_pow,
+
+
+
+
-
-
- rad2deg
-
- Converts the radian number to the equivalent number in degrees
-
-
-
- Description
-
- floatrad2deg
- floatnumber
-
-
- This function converts number from radian
- to degrees.
-
-
-
- <function>rad2deg</function> example
-
+
+
+ rad2deg
+
+ Converts the radian number to the equivalent number in degrees
+
+
+
+ Description
+
+ floatrad2deg
+ floatnumber
+
+
+ This function converts number from radian
+ to degrees.
+
+
+
+ <function>rad2deg</function> example
+
]]>
-
-
-
-
- See also deg2rad.
-
-
-
+
+
+
+
+ See also deg2rad.
+
+
+
+
-
-
- rand
- Generate a random integer
-
-
- Description
-
- intrand
- intmin
- intmax
-
-
- If called without the optional min,
- max arguments rand
- returns a pseudo-random integer between 0 and
- RAND_MAX. If you want a random number
- between 5 and 15 (inclusive), for example, use rand (5,
- 15).
-
-
-
- <function>rand</function> example
-
+
+
+ rand
+ Generate a random integer
+
+
+ Description
+
+ intrand
+ intmin
+ intmax
+
+
+ If called without the optional min,
+ max arguments rand
+ returns a pseudo-random integer between 0 and
+ RAND_MAX. If you want a random number
+ between 5 and 15 (inclusive), for example, use rand (5,
+ 15).
+
+
+
+ <function>rand</function> example
+
]]>
-
- &example.outputs.similar;
-
+
+ &example.outputs.similar;
+
-
-
-
-
-
- On some platforms (such as Windows) RAND_MAX
- is only 32768. If you require a range larger than 32768, specifying
- min and max will allow
- you to create a range larger than RAND_MAX, or consider using
- mt_rand instead.
-
-
+
+
+
+
+
+ On some platforms (such as Windows) RAND_MAX
+ is only 32768. If you require a range larger than 32768, specifying
+ min and max will allow
+ you to create a range larger than RAND_MAX, or consider using
+ mt_rand instead.
+
+
- ¬e.randomseed;
+ ¬e.randomseed;
-
-
- In versions before 3.0.7 the meaning of
- max was range. To
- get the same results in these versions the short example should
- be rand (5, 11) to get a random number
- between 5 and 15.
-
-
-
- See also:
- srand,
- getrandmax, and
- mt_rand.
-
-
-
+
+
+ In versions before 3.0.7 the meaning of
+ max was range. To
+ get the same results in these versions the short example should
+ be rand (5, 11) to get a random number
+ between 5 and 15.
+
+
+
+ See also:
+ srand,
+ getrandmax, and
+ mt_rand.
+
+
+
+
-
-
- round
- Rounds a float
-
-
- Description
-
- floatround
- floatval
- intprecision
-
-
- Returns the rounded value of val to
- specified precision
- (number of digits after the decimal point).
- precision can also be negative or zero (default).
-
-
-
- <function>round</function> examples
-
+
+
+ round
+ Rounds a float
+
+
+ Description
+
+ floatround
+ floatval
+ intprecision
+
+
+ Returns the rounded value of val to
+ specified precision
+ (number of digits after the decimal point).
+ precision can also be negative or zero (default).
+
+
+
+ <function>round</function> examples
+
]]>
-
-
-
-
-
-
-
- PHP doesn't handle strings like "12,300.2" correctly
- by default. See converting from strings.
-
-
-
-
-
-
- The precision parameter was introduced
- in PHP 4.
-
-
-
+
+
+
+
+
+
+
+ PHP doesn't handle strings like "12,300.2" correctly
+ by default. See converting from strings.
+
+
+
+
+
+
+ The precision parameter was introduced
+ in PHP 4.
+
+
+
+
+ See also:
+ ceil,
+ floor, and
+ number_format.
+
+
+
+
-
-
- sin
- Sine
-
-
- Description
-
- floatsin
- floatarg
-
-
- sin returns the sine of the arg
- parameter. The arg parameter is in radians.
-
-
-
- <function>sin</function> example
-
+
+
+ sin
+ Sine
+
+
+ Description
+
+ floatsin
+ floatarg
+
+
+ sin returns the sine of the arg
+ parameter. The arg parameter is in radians.
+
+
+
+ <function>sin</function> example
+
]]>
-
-
-
-
- See also:
- asin,
- cos,
- tan, and
- deg2rad.
-
-
-
+
+
+
+
+ See also:
+ asin,
+ cos,
+ tan, and
+ deg2rad.
+
+
+
+
-
-
- sinh
- Hyperbolic sine
-
-
- Description
-
- floatsinh
- floatarg
-
-
- Returns the hyperbolic sine of arg,
- defined as (exp(arg) - exp(-arg))/2.
-
-
- See also:
- sin,
- asinh,
- cos, and
- tan.
-
-
-
+
+
+ sinh
+ Hyperbolic sine
+
+
+ Description
+
+ floatsinh
+ floatarg
+
+
+ Returns the hyperbolic sine of arg,
+ defined as (exp(arg) - exp(-arg))/2.
+
+
+ See also:
+ sin,
+ asinh,
+ cos, and
+ tan.
+
+
+
+
-
-
- sqrt
- Square root
-
-
- Description
-
- floatsqrt
- floatarg
-
-
- Returns the square root of arg.
-
-
-
- <function>sqrt</function> example
-
+
+
+ sqrt
+ Square root
+
+
+ Description
+
+ floatsqrt
+ floatarg
+
+
+ Returns the square root of arg.
+
+
+
+ <function>sqrt</function> example
+
]]>
-
-
-
-
- See also pow.
-
-
-
+
+
+
+
+ See also pow.
+
+
+
+
-
-
- srand
- Seed the random number generator
-
-
- Description
-
- voidsrand
- intseed
-
-
- Seeds the random number generator with seed.
- Since PHP 4.2.0, the seed
- becomes optional and defaults to a random value if omitted.
-
-
-
- <function>srand</function> example
-
+
+
+ srand
+ Seed the random number generator
+
+
+ Description
+
+ voidsrand
+ intseed
+
+
+ Seeds the random number generator with seed.
+ Since PHP 4.2.0, the seed
+ becomes optional and defaults to a random value if omitted.
+
+
+
+ <function>srand</function> example
+
]]>
-
-
-
+
+
+
- ¬e.randomseed;
+ ¬e.randomseed;
-
- See also:
- rand,
- getrandmax, and
- mt_srand.
-
-
-
+
+ See also:
+ rand,
+ getrandmax, and
+ mt_srand.
+
+
+
+
-
-
- tan
- Tangent
-
-
- Description
-
- floattan
- floatarg
-
-
- tan returns the tangent of the arg
- parameter. The arg parameter is in radians.
-
-
-
- <function>tan</function> example
-
+
+
+ tan
+ Tangent
+
+
+ Description
+
+ floattan
+ floatarg
+
+
+ tan returns the tangent of the arg
+ parameter. The arg parameter is in radians.
+
+
+
+ <function>tan</function> example
+
]]>
-
-
-
-
- See also:
- atan,
- sin,
- cos, and
- deg2rad.
-
-
-
+
+
+
+
+ See also:
+ atan,
+ sin,
+ cos, and
+ deg2rad.
+
+
+
+
-
-
- tanh
- Hyperbolic tangent
-
-
- Description
-
- floattanh
- floatarg
-
-
- Returns the hyperbolic tangent of arg,
- defined as sinh(arg)/cosh(arg).
-
-
- See also:
- tan,
- atanh,
- sin, and
- cos.
-
-
-
+
+
+ tanh
+ Hyperbolic tangent
+
+
+ Description
+
+ floattanh
+ floatarg
+
+
+ Returns the hyperbolic tangent of arg,
+ defined as sinh(arg)/cosh(arg).
+
+
+ See also:
+ tan,
+ atanh,
+ sin, and
+ cos.
+
+
+