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archived-doc-it/reference/array/functions/array-shift.xml
Hartmut Holzgraefe 68ed3c43ee banana-split
git-svn-id: https://svn.php.net/repository/phpdoc/it/trunk@78211 c90b9560-bf6c-de11-be94-00142212c4b1
2002-04-15 00:57:05 +00:00

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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- splitted from ./it/functions/array.xml, last change in rev 1.1 -->
<!-- last change to 'array-shift' in en/ tree in rev 1.2 -->
<!-- EN-Revision: 1.1 Maintainer: cucinato Status: ready -->
<!-- OLD-Revision: 1.173/EN.1.2 -->
<refentry id="function.array-shift">
<refnamediv>
<refname>array_shift</refname>
<refpurpose>
Estrae l'elemento alla testa dell'array
</refpurpose>
</refnamediv>
<refsect1>
<title>Descrizione</title>
<methodsynopsis>
<type>mixed</type><methodname>array_shift</methodname>
<methodparam><type>array</type><parameter>array</parameter></methodparam>
</methodsynopsis>
<para>
<function>array_shift</function> estrae il primo elemento di
<parameter>array</parameter> e lo restituisce, accorciando
<parameter>array</parameter> di un elemento e spostando tutti gli altri
all'indietro. Se <parameter>array</parameter> &egrave; vuoto (o non &egrave; un array),
viene restituito &null;.
</para>
<para>
<example>
<title>esempio di <function>array_shift</function></title>
<programlisting role="php">
<![CDATA[
$pila = array ("arancia", "banana", "mela", lampone");
$frutto = array_shift ($pila);
]]>
</programlisting>
<para>
In questo modo <varname>$pila</varname> rimarrà con 3 elementi:
<screen role="php">
<![CDATA[
Array
(
[0] => banana
[1] => mela
[2] => lampone
)
]]>
</screen>
e <literal>arancia</literal> sarà assegnata a
<varname>$frutto</varname>.
</para>
</example>
</para>
<para>
Vedere anche <function>array_unshift</function>,
<function>array_push</function> e
<function>array_pop</function>.
</para>
</refsect1>
</refentry>
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