countCount all elements in an array, or something in an object
&reftitle.description;
intcountmixedvarintmodeCOUNT_NORMAL
Counts all elements in an array, or something in an object.
For objects, if you have
SPL installed, you can hook into
count by implementing interface
Countable. The interface has exactly one method,
Countable::count, which returns the return value for the
count function.
Please see the Array
section of the manual for a detailed explanation of how arrays
are implemented and used in PHP.
&reftitle.parameters;
var
The array or the object.
mode
If the optional mode parameter is set to
COUNT_RECURSIVE (or 1), count
will recursively count the array. This is particularly useful for
counting all the elements of a multidimensional array.
count does not detect infinite recursion.
&reftitle.returnvalues;
Returns the number of elements in var.
If var is not an array or an object with
implemented Countable interface,
1 will be returned.
There is one exception, if var is &null;,
0 will be returned.
count may return 0 for a variable that isn't set,
but it may also return 0 for a variable that has been initialized with an
empty array. Use isset to test if a variable is set.
&reftitle.changelog;
&Version;&Description;4.2.0
The optional mode parameter was added.
&reftitle.examples;
count example
]]>
Recursive count example
array('orange', 'banana', 'apple'),
'veggie' => array('carrot', 'collard', 'pea'));
// recursive count
echo count($food, COUNT_RECURSIVE); // output 8
// normal count
echo count($food); // output 2
?>
]]>
&reftitle.seealso;
is_arrayissetstrlen