<?xml version="1.0" encoding="iso-8859-1"?>
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  <refentry id="function.array-shift">
   <refnamediv>
    <refname>array_shift</refname>
    <refpurpose>
     Shift an element off the beginning of array
    </refpurpose>
   </refnamediv>
   <refsect1>
    <title>Description</title>
     <methodsynopsis>
      <type>mixed</type><methodname>array_shift</methodname>
      <methodparam><type>array</type><parameter role="reference">array</parameter></methodparam>
     </methodsynopsis>
    <para>
     <function>array_shift</function> shifts the first value of the
     <parameter>array</parameter> off and returns it, shortening the
     <parameter>array</parameter> by one element and moving everything
     down. All numerical array keys will be modified to start counting from zero
     while literal keys won't be touched. If <parameter>array</parameter> is empty 
     (or is not an array), &null; will be returned.
    </para>
    
    &array.resetspointer;
    
    <example>
     <title><function>array_shift</function> example</title>
     <programlisting role="php">
<![CDATA[
<?php
$stack = array("orange", "banana", "apple", "raspberry");
$fruit = array_shift($stack);
print_r($stack);
?>
]]>
     </programlisting>
     <para>
      This would result in <varname>$stack</varname> having 3 elements left:
     </para>
     <screen role="php">
<![CDATA[
Array
(
    [0] => banana
    [1] => apple
    [2] => raspberry
)
]]>
     </screen>
     <para>
      and <literal>orange</literal> will be assigned to
      <varname>$fruit</varname>.
     </para>
    </example>
    <para>
     See also <function>array_unshift</function>,
     <function>array_push</function>, and
     <function>array_pop</function>.
    </para>
   </refsect1>
  </refentry>

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