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https://github.com/sigmasternchen/php-doc-en
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c8196b0236
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@165051 c90b9560-bf6c-de11-be94-00142212c4b1
100 lines
2.6 KiB
XML
100 lines
2.6 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision: 1.13 $ -->
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<!-- splitted from ./en/functions/array.xml, last change in rev 1.2 -->
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<refentry id="function.uksort">
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<refnamediv>
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<refname>uksort</refname>
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<refpurpose>
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Sort an array by keys using a user-defined comparison function
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</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<methodsynopsis>
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<type>bool</type><methodname>uksort</methodname>
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<methodparam><type>array</type><parameter>&array</parameter></methodparam>
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<methodparam><type>callback</type><parameter>cmp_function</parameter></methodparam>
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</methodsynopsis>
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<para>
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<function>uksort</function> will sort the keys of an array using a
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user-supplied comparison function. If the array you wish to sort
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needs to be sorted by some non-trivial criteria, you should use
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this function.
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</para>
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<para>
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Function <parameter>cmp_function</parameter> should accept two
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parameters which will be filled by pairs of <parameter>array</parameter> keys.
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The comparison function must return an integer less than, equal
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to, or greater than zero if the first argument is considered to
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be respectively less than, equal to, or greater than the
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second.
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</para>
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<para>
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&return.success;
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</para>
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<para>
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<example>
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<title><function>uksort</function> example</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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function cmp($a, $b)
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{
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if ($a == $b) {
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return 0;
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}
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return ($a > $b) ? -1 : 1;
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}
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$a = array(4 => "four", 3 => "three", 20 => "twenty", 10 => "ten");
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uksort($a, "cmp");
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while (list($key, $value) = each($a)) {
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echo "$key: $value\n";
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}
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?>
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]]>
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</programlisting>
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<para>
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This example would display:
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</para>
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<screen>
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<![CDATA[
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20: twenty
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10: ten
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4: four
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3: three
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]]>
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</screen>
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</example>
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</para>
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<para>
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See also <function>usort</function>, <function>uasort</function>,
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<function>sort</function>, <function>asort</function>,
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<function>arsort</function>, <function>ksort</function>,
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<function>natsort</function>, and <function>rsort</function>.
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</para>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"../../../../manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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