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Fixed #48119 (usort() docs don't mention it now takes a lambda)
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@283436 c90b9560-bf6c-de11-be94-00142212c4b1
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2 changed files with 50 additions and 41 deletions
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@ -1,5 +1,5 @@
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<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision: 1.3 $ -->
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<!-- $Revision: 1.4 $ -->
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<sect1 xml:id="language.pseudo-types">
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<title>Pseudo-types and variables used in this documentation</title>
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@ -63,14 +63,16 @@
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<para>
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Apart from common user-defined function, <function>create_function</function>
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can also be used to create an anonymous callback function.
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can also be used to create an anonymous callback function. As of PHP 5.3.0
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its possible to also pass a closure to a callback parameter.
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</para>
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<example>
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<title>
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Callback function examples
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</title>
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<programlisting role="php">
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<para>
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<example>
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<title>
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Callback function examples
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</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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@ -115,8 +117,42 @@ class B extends A {
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call_user_func(array('B', 'parent::who')); // A
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?>
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]]>
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</programlisting>
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</example>
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</programlisting>
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</example>
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</para>
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<para>
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<example>
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<title>
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Callback example using a Closure
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</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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// Our closure
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$double = function($a) {
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return $a * 2;
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};
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// This is our range of numbers
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$numbers = range(1, 5);
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// Use the closure as a callback here to
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// double the size of each element in our
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// range
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$new_numbers = array_map($double, $numbers);
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print implode(' ', $new_numbers);
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?>
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]]>
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</programlisting>
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&example.outputs;
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<screen>
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<![CDATA[
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2 4 6 8 10
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]]>
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</screen>
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</example>
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</para>
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<note>
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<simpara>
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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: 1.22 $ -->
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<!-- $Revision: 1.23 $ -->
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<refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.array-map">
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<refnamediv>
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<refname>array_map</refname>
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@ -66,31 +66,6 @@
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</para>
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</refsect1>
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<refsect1 role="changelog">
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&reftitle.changelog;
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<para>
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<informaltable>
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<tgroup cols="2">
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<thead>
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<row>
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<entry>&Version;</entry>
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<entry>&Description;</entry>
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</row>
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</thead>
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<tbody>
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<row>
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<entry>5.3.0</entry>
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<entry>
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It is now possible to use a lambda function as the
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<parameter>callback</parameter>.
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</entry>
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</row>
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</tbody>
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</tgroup>
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</informaltable>
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</para>
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</refsect1>
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<refsect1 role="examples">
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&reftitle.examples;
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<para>
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@ -127,17 +102,15 @@ Array
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</screen>
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</example>
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<example>
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<title><function>array_map</function> using lambda function (as of PHP 5.3.0)</title>
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<title><function>array_map</function> using a lambda function (as of PHP 5.3.0)</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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/* As of PHP 5.3.0 */
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$func = function($value) { return $value * 2; };
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$func = function($value) {
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return $value * 2;
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};
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print_r(array_map($func, range(1, 5)));
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?>
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]]>
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</programlisting>
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