mirror of
https://github.com/sigmasternchen/php-doc-en
synced 2025-03-16 00:48:54 +00:00
Added <?php ?>, and missing CDATA's.
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@112919 c90b9560-bf6c-de11-be94-00142212c4b1
This commit is contained in:
Philip Olson
parent
214208c4c1
commit
c585222898
1 changed files with 104 additions and 3 deletions
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@ -1,5 +1,5 @@
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<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision: 1.103 $ -->
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<!-- $Revision: 1.104 $ -->
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<chapter id="language.types">
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<title>Types</title>
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@ -127,6 +127,7 @@
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<informalexample>
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<programlisting role="php">
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<![CDATA[
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<?php
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$bool = TRUE; // a boolean
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$str = "foo"; // a string
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$int = 12; // an integer
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@ -144,6 +145,7 @@ if (is_int($int)) {
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if (is_string($bool)) {
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echo "String: $bool";
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}
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?>
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]]>
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</programlisting>
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</informalexample>
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@ -185,7 +187,9 @@ if (is_string($bool)) {
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<informalexample>
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<programlisting role="php">
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<![CDATA[
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<?php
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$foo = True; // assign the value TRUE to $foo
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?>
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]]>
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</programlisting>
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</informalexample>
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@ -199,6 +203,7 @@ $foo = True; // assign the value TRUE to $foo
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<informalexample>
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<programlisting role="php">
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<![CDATA[
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<?php
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// == is an operator which test
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// equality and returns a boolean
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if ($action == "show_version") {
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@ -214,6 +219,7 @@ if ($show_separators == TRUE) {
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if ($show_separators) {
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echo "<hr>\n";
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}
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?>
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]]>
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</programlisting>
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</informalexample>
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@ -283,6 +289,7 @@ if ($show_separators) {
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<informalexample>
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<programlisting role="php">
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<![CDATA[
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<?php
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echo gettype((bool) ""); // bool(false)
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echo gettype((bool) 1); // bool(true)
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echo gettype((bool) -2); // bool(true)
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@ -290,6 +297,7 @@ echo gettype((bool) "foo"); // bool(true)
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echo gettype((bool) 2.3e5); // bool(true)
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echo gettype((bool) array(12)); // bool(true)
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echo gettype((bool) array()); // bool(false)
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?>
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]]>
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</programlisting>
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</informalexample>
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@ -325,10 +333,12 @@ echo gettype((bool) array()); // bool(false)
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<title>Integer literals</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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$a = 1234; # decimal number
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$a = -123; # a negative number
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$a = 0123; # octal number (equivalent to 83 decimal)
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$a = 0x1A; # hexadecimal number (equivalent to 26 decimal)
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?>
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]]>
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</programlisting>
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</example>
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@ -336,6 +346,7 @@ $a = 0x1A; # hexadecimal number (equivalent to 26 decimal)
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<informalexample>
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<programlisting>
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<![CDATA[
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<?php
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decimal : [1-9][0-9]*
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| 0
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@ -346,6 +357,7 @@ octal : 0[0-7]+
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integer : [+-]?decimal
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| [+-]?hexadecimal
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| [+-]?octal
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?>
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]]>
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</programlisting>
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</informalexample>
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@ -368,6 +380,7 @@ integer : [+-]?decimal
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<informalexample>
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<programlisting role="php">
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<![CDATA[
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<?php
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$large_number = 2147483647;
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var_dump($large_number);
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// output: int(2147483647)
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@ -384,6 +397,7 @@ $million = 1000000;
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$large_number = 50000 * $million;
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var_dump($large_number);
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// output: float(50000000000)
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?>
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]]>
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</programlisting>
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</informalexample>
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@ -410,9 +424,11 @@ var_dump($large_number);
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<informalexample>
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<programlisting role="php">
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<![CDATA[
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<?php
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var_dump(25/7); // float(3.5714285714286)
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var_dump((int) (25/7)); // int(3)
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var_dump(round(25/7)); // float(4)
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?>
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]]>
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</programlisting>
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</informalexample>
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@ -467,7 +483,9 @@ var_dump(round(25/7)); // float(4)
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<informalexample>
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<programlisting role="php">
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<![CDATA[
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<?php
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echo (int) ( (0.1+0.7) * 10 ); // echoes 7!
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?>
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]]>
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</programlisting>
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</informalexample>
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@ -511,7 +529,13 @@ echo (int) ( (0.1+0.7) * 10 ); // echoes 7!
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specified using any of the following syntaxes:
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<informalexample>
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<programlisting role="php">
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$a = 1.234; $a = 1.2e3; $a = 7E-10;
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<![CDATA[
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<?php
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$a = 1.234;
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$b = 1.2e3;
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$c = 7E-10;
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?>
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]]>
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</programlisting>
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</informalexample>
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Formally:
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@ -641,6 +665,7 @@ EXPONENT_DNUM ( ({LNUM} | {DNUM}) [eE][+-]? {LNUM})
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<informalexample>
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<programlisting role="php">
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<![CDATA[
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<?php
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echo 'this is a simple string';
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echo 'You can also have embedded newlines in strings
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this way';
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@ -652,6 +677,7 @@ echo 'Are you sure you want to delete C:\*.*?';
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// output: ... delete C:\*.*?
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echo 'I am trying to include at this point: \n a newline';
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// output: ... this point: \n a newline
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?>
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]]>
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</programlisting>
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</informalexample>
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@ -841,10 +867,12 @@ EOT;
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<informalexample>
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<programlisting role="php">
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<![CDATA[
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<?php
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$beer = 'Heineken';
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echo "$beer's taste is great"; // works, "'" is an invalid character for varnames
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echo "He drank some $beers"; // won't work, 's' is a valid character for varnames
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echo "He drank some ${beer}s"; // works
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?>
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]]>
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</programlisting>
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</informalexample>
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@ -865,6 +893,7 @@ echo "He drank some ${beer}s"; // works
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<informalexample>
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<programlisting role="php">
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<![CDATA[
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<?php
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$fruits = array('strawberry' => 'red', 'banana' => 'yellow');
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// note that this works differently outside string-quotes
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@ -874,7 +903,7 @@ echo "This square is $square->width meters broad.";
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// Won't work. For a solution, see the complex syntax.
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echo "This square is $square->width00 centimeters broad.";
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?>
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]]>
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<!-- XXX this won't work:
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echo "This square is $square->{width}00 centimeters broad.";
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@ -907,6 +936,7 @@ echo "This square is $square->{width}00 centimeters broad.";
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<informalexample>
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<programlisting role="php">
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<![CDATA[
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<?php
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$great = 'fantastic';
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echo "This is { $great}"; // won't work, outputs: This is { fantastic}
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echo "This is {$great}"; // works, outputs: This is fantastic
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@ -920,6 +950,7 @@ echo "This is wrong: {$arr[foo][3]}";
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echo "You should do it this way: {$arr['foo'][3]}";
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echo "You can even write {$obj->values[3]->name}";
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echo "This is the value of the var named $name: {${$name}}";
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?>
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]]>
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<!-- maybe it's better to leave this out??
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// this works, but i disencourage its use, since this is NOT
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@ -1084,6 +1115,7 @@ $last = $str{strlen($str)-1};
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<informalexample>
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<programlisting role="php">
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<![CDATA[
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<?php
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$foo = 1 + "10.5"; // $foo is float (11.5)
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$foo = 1 + "-1.3e3"; // $foo is float (-1299)
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$foo = 1 + "bob-1.3e3"; // $foo is integer (1)
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@ -1092,6 +1124,7 @@ $foo = 1 + "10 Small Pigs"; // $foo is integer (11)
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$foo = 4 + "10.2 Little Piggies"; // $foo is float (14.2)
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$foo = "10.0 pigs " + 1; // $foo is float (11)
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$foo = "10.0 pigs " + 1.0; // $foo is float (11)
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?>
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]]>
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</programlisting>
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</informalexample>
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@ -1106,7 +1139,9 @@ $foo = "10.0 pigs " + 1.0; // $foo is float (11)
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<informalexample>
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<programlisting role="php">
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<![CDATA[
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<?php
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echo "\$foo==$foo; type is " . gettype ($foo) . "<br />\n";
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?>
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]]>
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</programlisting>
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</informalexample>
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@ -1169,7 +1204,9 @@ array( <optional> <replaceable>key</replaceable> => </optional> <replaceable
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<informalexample>
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<programlisting role="php">
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<![CDATA[
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<?php
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array("foo" => "bar", 12 => true);
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?>
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]]>
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</programlisting>
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</informalexample>
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@ -1189,7 +1226,9 @@ array("foo" => "bar", 12 => true);
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<informalexample>
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<programlisting role="php">
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<![CDATA[
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<?php
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array("somearray" => array(6 => 5, 13 => 9, "a" => 43));
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?>
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]]>
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</programlisting>
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</informalexample>
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@ -1205,11 +1244,13 @@ array("somearray" => array(6 => 5, 13 => 9, "a" => 43));
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<informalexample>
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<programlisting role="php">
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<![CDATA[
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<?php
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// This array is the same as ...
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array(5 => 43, 32, 56, "b" => 12);
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// ...this array
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array(5 => 43, 6 => 32, 7 => 56, "b" => 12);
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?>
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]]>
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</programlisting>
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</informalexample>
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@ -1254,6 +1295,7 @@ $arr[] = <replaceable>value</replaceable>;
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<informalexample>
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<programlisting role="php">
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<![CDATA[
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<?php
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$arr = array(5 => 1, 12 => 2);
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$arr[] = 56; // This is the same as $arr[13] = 56;
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@ -1265,6 +1307,7 @@ $arr["x"] = 42; // This adds a new element to
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unset($arr[5]); // This removes the element from the array
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unset($arr); // This deletes the whole array
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?>
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]]>
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</programlisting>
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</informalexample>
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@ -1288,6 +1331,7 @@ unset($arr); // This deletes the whole array
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<informalexample>
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<programlisting role="php">
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<![CDATA[
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<?php
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$a = array(1 => 'one', 2 => 'two', 3 => 'three');
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unset($a[2]);
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/* will produce an array that would have been defined as
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@ -1298,6 +1342,7 @@ unset($a[2]);
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$b = array_values($a);
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// Now b is array(1 => 'one', 2 =>'three')
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?>
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]]>
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</programlisting>
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</informalexample>
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@ -1323,9 +1368,11 @@ $b = array_values($a);
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<informalexample>
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<programlisting role="php">
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<![CDATA[
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<?php
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$foo[bar] = 'enemy';
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echo $foo[bar];
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// etc
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?>
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]]>
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</programlisting>
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</informalexample>
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@ -1344,7 +1391,9 @@ echo $foo[bar];
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<informalexample>
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<programlisting role="php">
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<![CDATA[
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<?php
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echo $arr[foo(true)];
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?>
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]]>
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</programlisting>
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</informalexample>
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@ -1356,9 +1405,11 @@ echo $arr[foo(true)];
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<informalexample>
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<programlisting role="php">
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<![CDATA[
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<?php
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$error_descriptions[E_ERROR] = "A fatal error has occured";
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$error_descriptions[E_WARNING] = "PHP issued a warning";
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$error_descriptions[E_NOTICE] = "This is just an informal notice";
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?>
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]]>
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</programlisting>
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</informalexample>
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@ -1368,9 +1419,11 @@ $error_descriptions[E_NOTICE] = "This is just an informal notice";
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<informalexample>
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<programlisting role="php">
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<![CDATA[
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<?php
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$error_descriptions[1] = "A fatal error has occured";
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$error_descriptions[2] = "PHP issued a warning";
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$error_descriptions[8] = "This is just an informal notice";
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?>
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]]>
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</programlisting>
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</informalexample>
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@ -1473,6 +1526,7 @@ line <b>10</b><br />
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<informalexample>
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<programlisting role="php">
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<![CDATA[
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<?php
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// this
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$a = array( 'color' => 'red',
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'taste' => 'sweet',
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@ -1493,6 +1547,7 @@ $b[] = 'b';
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$b[] = 'c';
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// will result in the array array(0 => 'a' , 1 => 'b' , 2 => 'c'),
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// or simply array('a', 'b', 'c')
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?>
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]]>
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</programlisting>
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</informalexample>
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@ -1502,6 +1557,7 @@ $b[] = 'c';
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<title>Using array()</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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// Array as (property-)map
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$map = array( 'version' => 4,
|
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'OS' => 'Linux',
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@ -1530,6 +1586,7 @@ $switching = array( 10, // key = 0
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// empty array
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$empty = array();
|
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?>
|
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]]>
|
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<!-- TODO example of
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- overwriting keys
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@ -1543,6 +1600,7 @@ $empty = array();
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<title>Collection</title>
|
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<programlisting role="php">
|
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<![CDATA[
|
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<?php
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$colors = array('red', 'blue', 'green', 'yellow');
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|
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foreach ($colors as $color) {
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@ -1555,6 +1613,7 @@ Do you like blue?
|
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Do you like green?
|
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Do you like yellow?
|
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*/
|
||||
?>
|
||||
]]>
|
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</programlisting>
|
||||
</example>
|
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|
|
@ -1573,6 +1632,7 @@ Do you like yellow?
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<title>Collection</title>
|
||||
<programlisting role="php">
|
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<![CDATA[
|
||||
<?php
|
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foreach ($colors as $key => $color) {
|
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// won't work:
|
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//$color = strtoupper($color);
|
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|
|
@ -1591,6 +1651,7 @@ Array
|
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[3] => YELLOW
|
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)
|
||||
*/
|
||||
?>
|
||||
]]>
|
||||
</programlisting>
|
||||
</example>
|
||||
|
|
@ -1601,6 +1662,7 @@ Array
|
|||
<title>One-based index</title>
|
||||
<programlisting role="php">
|
||||
<![CDATA[
|
||||
<?php
|
||||
$firstquarter = array(1 => 'January', 'February', 'March');
|
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print_r($firstquarter);
|
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|
||||
|
|
@ -1626,6 +1688,7 @@ while ($file = readdir($handle)) {
|
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$files[] = $file;
|
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}
|
||||
closedir($handle);
|
||||
?>
|
||||
]]>
|
||||
</programlisting>
|
||||
</example>
|
||||
|
|
@ -1640,8 +1703,10 @@ closedir($handle);
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|||
<title>Sorting array</title>
|
||||
<programlisting role="php">
|
||||
<![CDATA[
|
||||
<?php
|
||||
sort($files);
|
||||
print_r($files);
|
||||
?>
|
||||
]]>
|
||||
</programlisting>
|
||||
</example>
|
||||
|
|
@ -1654,6 +1719,7 @@ print_r($files);
|
|||
<title>Recursive and multi-dimensional arrays</title>
|
||||
<programlisting role="php">
|
||||
<![CDATA[
|
||||
<?php
|
||||
$fruits = array ( "fruits" => array ( "a" => "orange",
|
||||
"b" => "banana",
|
||||
"c" => "apple"
|
||||
|
|
@ -1678,6 +1744,7 @@ unset($fruits["holes"][0]); // remove "first"
|
|||
|
||||
// Create a new multi-dimensional array
|
||||
$juices["apple"]["green"] = "good";
|
||||
?>
|
||||
]]>
|
||||
</programlisting>
|
||||
</example>
|
||||
|
|
@ -1688,6 +1755,7 @@ $juices["apple"]["green"] = "good";
|
|||
<informalexample>
|
||||
<programlisting role="php">
|
||||
<![CDATA[
|
||||
<?php
|
||||
$arr1 = array(2, 3);
|
||||
$arr2 = $arr1;
|
||||
$arr2[] = 4; // $arr2 is changed,
|
||||
|
|
@ -1695,6 +1763,7 @@ $arr2[] = 4; // $arr2 is changed,
|
|||
|
||||
$arr3 = &$arr1;
|
||||
$arr3[] = 4; // now $arr1 and $arr3 are the same
|
||||
?>
|
||||
]]>
|
||||
</programlisting>
|
||||
</informalexample>
|
||||
|
|
@ -1749,8 +1818,12 @@ $bar->do_foo();
|
|||
value.
|
||||
<informalexample>
|
||||
<programlisting role="php">
|
||||
<![CDATA[
|
||||
<?php
|
||||
$obj = (object) 'ciao';
|
||||
echo $obj->scalar; // outputs 'ciao'
|
||||
?>
|
||||
]]>
|
||||
</programlisting>
|
||||
</informalexample>
|
||||
</para>
|
||||
|
|
@ -1854,7 +1927,11 @@ echo $obj->scalar; // outputs 'ciao'
|
|||
the case-insensitive keyword &null;.
|
||||
<informalexample>
|
||||
<programlisting role="php">
|
||||
<![CDATA[
|
||||
<?php
|
||||
$var = NULL;
|
||||
]]>
|
||||
?>
|
||||
</programlisting>
|
||||
</informalexample>
|
||||
</para>
|
||||
|
|
@ -1979,6 +2056,8 @@ call_user_function(array("foo", "bar")); // static class method call
|
|||
how the operands are evaluated.
|
||||
<informalexample>
|
||||
<programlisting role="php">
|
||||
<![CDATA[
|
||||
<?php
|
||||
$foo = "0"; // $foo is string (ASCII 48)
|
||||
<!-- bad example, no real operator (must be used with variable, modifies it too)
|
||||
$foo++; // $foo is the string "1" (ASCII 49)
|
||||
|
|
@ -2005,6 +2084,8 @@ examples:
|
|||
- -'abc' = 'abc'
|
||||
|
||||
-->
|
||||
?>
|
||||
]]>
|
||||
</programlisting>
|
||||
</informalexample>
|
||||
</para>
|
||||
|
|
@ -2031,8 +2112,12 @@ examples:
|
|||
<para>
|
||||
<informalexample>
|
||||
<programlisting role="php">
|
||||
<![CDATA[
|
||||
<?php
|
||||
$a = "1"; // $a is a string
|
||||
$a[0] = "f"; // What about string offsets? What happens?
|
||||
?>
|
||||
]]>
|
||||
</programlisting>
|
||||
</informalexample>
|
||||
</para>
|
||||
|
|
@ -2052,8 +2137,12 @@ $a[0] = "f"; // What about string offsets? What happens?
|
|||
above:
|
||||
<informalexample>
|
||||
<programlisting role="php">
|
||||
<![CDATA[
|
||||
<?php
|
||||
$a = "abc"; // $a is a string
|
||||
$a{1} = "f"; // $a is now "afc"
|
||||
?>
|
||||
]]>
|
||||
</programlisting>
|
||||
</informalexample>
|
||||
See the section titled <link linkend="language.types.string.substr">String
|
||||
|
|
@ -2070,8 +2159,12 @@ $a{1} = "f"; // $a is now "afc"
|
|||
is to be cast.
|
||||
<informalexample>
|
||||
<programlisting role="php">
|
||||
<![CDATA[
|
||||
<?php
|
||||
$foo = 10; // $foo is an integer
|
||||
$bar = (boolean) $foo; // $bar is a boolean
|
||||
?>
|
||||
]]>
|
||||
</programlisting>
|
||||
</informalexample>
|
||||
</para>
|
||||
|
|
@ -2103,8 +2196,12 @@ $bar = (boolean) $foo; // $bar is a boolean
|
|||
the following are functionally equivalent:
|
||||
<informalexample>
|
||||
<programlisting role="php">
|
||||
<![CDATA[
|
||||
<?php
|
||||
$foo = (int) $bar;
|
||||
$foo = ( int ) $bar;
|
||||
?>
|
||||
]]>
|
||||
</programlisting>
|
||||
</informalexample>
|
||||
</para>
|
||||
|
|
@ -2114,6 +2211,8 @@ $foo = ( int ) $bar;
|
|||
the variable in double quotes.
|
||||
<informalexample>
|
||||
<programlisting role="php">
|
||||
<![CDATA[
|
||||
<?php
|
||||
$foo = 10; // $foo is an integer
|
||||
$str = "$foo"; // $str is a string
|
||||
$fst = (string) $foo; // $fst is also a string
|
||||
|
|
@ -2122,6 +2221,8 @@ $fst = (string) $foo; // $fst is also a string
|
|||
if ($fst === $str) {
|
||||
echo "they are the same";
|
||||
}
|
||||
?>
|
||||
]]>
|
||||
</programlisting>
|
||||
</informalexample>
|
||||
</para>
|
||||
|
|
|
|||
Loading…
Reference in a new issue