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135 lines
3.6 KiB
XML
135 lines
3.6 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<refentry xml:id="function.array-all" xmlns="http://docbook.org/ns/docbook">
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<refnamediv>
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<refname>array_all</refname>
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<refpurpose>Checks if all &array; elements satisfy a callback function</refpurpose>
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</refnamediv>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<type>bool</type><methodname>array_all</methodname>
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<methodparam><type>array</type><parameter>array</parameter></methodparam>
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<methodparam><type>callable</type><parameter>callback</parameter></methodparam>
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</methodsynopsis>
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<simpara>
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<function>array_all</function> returns &true;, if the given
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<parameter>callback</parameter> returns &true; for all elements.
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Otherwise the function returns &false;.
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</simpara>
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</refsect1>
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<refsect1 role="parameters">
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&reftitle.parameters;
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<variablelist>
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<varlistentry>
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<term><parameter>array</parameter></term>
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<listitem>
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<simpara>
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The &array; that should be searched.
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</simpara>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>callback</parameter></term>
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<listitem>
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<para>
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The callback function to call to check each element, which must be
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<methodsynopsis>
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<type>bool</type><methodname><replaceable>callback</replaceable></methodname>
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<methodparam><type>mixed</type><parameter>value</parameter></methodparam>
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<methodparam><type>mixed</type><parameter>key</parameter></methodparam>
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</methodsynopsis>
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If this function returns &false;, &false; is returned from
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<function>array_all</function> and the callback will not be called for
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further elements.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1 role="returnvalues">
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&reftitle.returnvalues;
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<simpara>
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The function returns &true;, if <parameter>callback</parameter> returns
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&true; for all elements. Otherwise the function returns &false;.
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</simpara>
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</refsect1>
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<refsect1 role="examples">
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&reftitle.examples;
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<example>
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<title><function>array_all</function> example</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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$array = [
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'a' => 'dog',
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'b' => 'cat',
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'c' => 'cow',
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'd' => 'duck',
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'e' => 'goose',
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'f' => 'elephant'
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];
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// Check, if all animal names are shorter than 12 letters.
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var_dump(array_all($array, function (string $value) {
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return strlen($value) < 12;
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}));
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// Check, if all animal names are longer than 5 letters.
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var_dump(array_all($array, function (string $value) {
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return strlen($value) > 5;
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}));
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// Check, if all array keys are strings.
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var_dump(array_all($array, function (string $value, $key) {
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return is_string($key);
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}));
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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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bool(true)
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bool(false)
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bool(true)
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]]>
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</screen>
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</example>
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</refsect1>
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<refsect1 role="seealso">
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&reftitle.seealso;
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<simplelist>
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<member><function>array_any</function></member>
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<member><function>array_filter</function></member>
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<member><function>array_find</function></member>
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<member><function>array_find_key</function></member>
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</simplelist>
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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:"~/.phpdoc/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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