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aktuelle.kurse/old_m133/4_Modulinhalte_und_Uebungen/00-Anwendungen-Beispiele-Uebungen/PHP_Referenz/funktionsreferenz/array_funktionen/array_reduce.html
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<title>array_reduce</title>
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<meta name="description" content="&Uuml;bergibt den Inhalt eines Arrays an eine Funktion">
<meta name="keywords" content="SELFPHP, PHP, Array-Funktionen, array_reduce">
<meta name="author" content="Damir Enseleit, mail@selfphp.info">
<meta name="DC.Contributer" content="Matthias Hupp, m.hupp@selfphp3.de">
<meta name="DC.Publisher" content="Damir Enseleit, mail@selfphp.info">
<meta name="DC.Date" content="2001-08-06T12:18+01:00">
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<h2>array_reduce</h2></td>
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<p> <img src="../../src/down.gif" width="14" height="10" border="0" alt="nach unten">&nbsp;<a href="#befehl"><b>Befehl</b></a><br>
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<td class="xmpcode" bgcolor="#E4EEFF">mixed <b>array_reduce</b>(array input,
mixed callback [, int initial])</td>
</tr></table>
<p>&nbsp;</p>
<table bgcolor="#EEEEEE" class="doc" width="100%"><tr><td>
<a href="#top"><img src="../../src/up.gif" width="14" height="10" border="0" alt="nach oben"></a><a href="#bottom"><img src="../../src/down.gif" width="14" height="10" border="0" alt="nach unten"></a>&#160;
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<h2 class="Sh2"><a class="an" name="version">Version</a></h2>
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<td class="xmpcode" bgcolor="#E4EEFF" height="20">
<p>PHP 4 &gt;= 4.0.5</p>
</td>
</tr></table>
<p>&nbsp;</p>
<table bgcolor="#EEEEEE" class="doc" width="100%"><tr><td>
<a href="#top"><img src="../../src/up.gif" width="14" height="10" border="0" alt="nach oben"></a><a href="#bottom"><img src="../../src/down.gif" width="14" height="10" border="0" alt="nach unten"></a>&#160;
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<p>Die Funktion array_reduce() &uuml;bergibt nacheinander jedes Element
des Arrays<br>
input an eine R&uuml;ckruffunktion (callback) und gibt den Ergebniswert
zur&uuml;ck.</p>
<p>Siehe auch:</p>
<ul>
<li><a href="array_filter.html">array_filter()</a></li>
<li><a href="array_map.html">array_map()</a></li>
</ul>
</td>
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<p>&nbsp;</p>
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<a href="#top"><img src="../../src/up.gif" width="14" height="10" border="0" alt="nach oben"></a><a href="#bottom"><img src="../../src/down.gif" width="14" height="10" border="0" alt="nach unten"></a>&#160;
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<h2 class="Sh2"><a class="an" name="beispiel">Beispiel</a></h2>
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<td class="xmpcode" bgcolor="#E4EEFF">
<pre>&lt;?PHP<br>function summiere($summe, $wert) {<br> $summe += $wert;<br> return $summe;<br>}</pre>
<pre>function multipliziere($summe, $wert) {
$summe *= $wert;
return $summe;
}</pre>
<pre>$array = array(2, 4, 6, 8, 10);
$leer = array();
$a = array_reduce($array, &quot;summiere&quot;);
$b = array_reduce($array, &quot;multipliziere&quot;, 20);
$c = array_reduce($leer, &quot;summiere&quot;, 1);
echo $a . &quot;&lt;br&gt;&quot;;
echo $b . &quot;&lt;br&gt;&quot;;
echo $c . &quot;&lt;br&gt;&quot;;
?&gt;</pre>
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<p>&nbsp;</p>
<table bgcolor="#EEEEEE" class="doc" width="100%"><tr><td>
<a href="#top"><img src="../../src/up.gif" width="14" height="10" border="0" alt="nach oben"></a><a href="#bottom"><img src="../../src/down.gif" width="14" height="10" border="0" alt="nach unten"></a>&#160;
</td></tr></table>
<h2 class="Sh2"><a class="an" name="ausgabe">Ausgabe</a></h2>
<table width="100%" cellpadding=10 height="42">
<tr>
<td class="xmpcode" bgcolor="#E4EEFF" height="57">
<p>30<br>
76800<br>
1</p>
</td>
</tr></table>
<p>&nbsp;</p>
<table cellpadding="4" cellspacing="0" border="0" width="100%">
<tr><td colspan=2 bgcolor="#EEEEEE" class="doc">
<a href="#top"><img src="../../src/up.gif" width="14" height="10" border="0" alt="nach oben"></a>
</td></tr>
<tr>
<td bgcolor="#EEEEEE" class="doc" align="right" width="110">weiter:<a href="array_reverse.html"><img src="../../src/next.gif" width="10" height="10" border="0" hspace="10" alt="weiter"></a></td>
<td bgcolor="#FFFFFF"><img src="../../src/dok.gif" width="15" height="10" border="0" alt="Seite">
<a href="array_reverse.html"><b>array_reverse</b></a> </td>
</tr>
<tr>
<td bgcolor="#EEEEEE" class="doc" align="right" width="110">zur&uuml;ck:<a href="array_rand.html"><img src="../../src/prev.gif" width="10" height="10" border="0" hspace="10" alt="zur&uuml;ck"></a></td>
<td bgcolor="#FFFFFF" width="100%"><img src="../../src/dok.gif" width="15" height="10" border="0" alt="Seite">
<a href="array_rand.html"><b>array_rand</b></a> </td>
</tr>
<tr><td colspan=2 bgcolor="#EEEEEE" class="doc">&#160;</td></tr>
</table><table cellpadding="4" cellspacing="0" border="0" width="100%">
<tr>
<td bgcolor="#FFEEDD" class="nav"><a class="an" name="bottom"><img src="../../src/refkap.gif" width="16" height="13" border="0" alt="Teil von"></a>
<a href="../../index.html"><b>SELFPHP</b></a>/<a href="../../navigation/index.html">Navigationshilfen</a> <img src="../../src/refkap.gif" width="16" height="13" border="0" alt="Teil von">
<a href="../index.html"><b>Funktionsreferenz</b></a> <img src="../../src/refkap.gif" width="16" height="13" border="0" alt="Teil von">
<a href="index.html"><b>Array-Funktionen</b></a></td>
</tr>
</table>
<p><a class="an" name="bottom">&copy; 2001, 2002, 2003</A> <img src="../../src/mail.gif" width="15" height="10" border="0" alt="E-Mail">&nbsp;<a href="mailto:mail@selfphp.info">Damir Enseleit, mail@selfphp.info</a></p>
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