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archived-doc-tr/reference/array/functions/array-reduce.xml
Nilgün Belma Bugüner 568f94a55f changed EN-Revision tag as cvs2svn
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2009-07-11 10:54:55 +00:00

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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<!-- EN-Revision: 876c81c602fe21a5404b74ed5e412198f632eac0 Maintainer: nilgun Status: ready -->
<refentry xml:id="function.array-reduce" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>array_reduce</refname>
<refpurpose>Bir geriçağırım işlevini dizinin bütün elemanlarına tek tek
uygulayıp sonucu döndürür</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>mixed</type><methodname>array_reduce</methodname>
<methodparam><type>array</type><parameter>girdi</parameter></methodparam>
<methodparam><type>callback</type><parameter>işlev</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>ilk_değer</parameter></methodparam>
</methodsynopsis>
<para>
<function>array_reduce</function> işlevi <parameter>işlev</parameter>
işlevini <parameter>girdi</parameter> dizisinin bütün elemanlarına tek tek
uygulayıp sonucu döndürür.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>girdi</parameter></term>
<listitem>
<para>
Girdi olarak bir dizi.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>işlev</parameter></term>
<listitem>
<para>
Geriçağırım işlevi.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>ilk_değer</parameter></term>
<listitem>
<para>
Seçimlik <parameter>ilk_değer</parameter> değiştirgesi verilmişse ve
dizi boşsa işlevin dönüş değeri <parameter>ilk_değer</parameter> olur,
aksi takdirde işleme sokulan ilk değer belirtilen
<parameter>ilk_değer</parameter> olur.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Elde edilen sonucu döndürür.
</para>
<para>
Eğer dizi boşsa ve bir <parameter>ilk_değer</parameter> belirtilmemişse
<function>array_reduce</function> &null; döndürür.
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title>- <function>array_reduce</function> örneği</title>
<programlisting role="php">
<![CDATA[
<?php
function rsum($v, $w)
{
$v += $w;
return $v;
}
function rmul($v, $w)
{
$v *= $w;
return $v;
}
$a = array(1, 2, 3, 4, 5);
$x = array();
$b = array_reduce($a, "rsum");
$c = array_reduce($a, "rmul", 10);
$d = array_reduce($x, "rsum", 1);
?>
]]>
</programlisting>
<para>
İşlem sonucunda <varname>$b</varname> <literal>15</literal>,
<varname>$c</varname> ise <literal>1200</literal> (= 10*1*2*3*4*5)
değerini içerirken <varname>$d</varname> <literal>1</literal> içerir.
</para>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>array_filter</function></member>
<member><function>array_map</function></member>
<member><function>array_unique</function></member>
<member><function>array_count_values</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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