<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <title>Shift an element off the beginning of array</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.array-search.html">array_search</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.array-slice.html">array_slice</a></div> <div class="up"><a href="ref.array.html">Array Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="function.array-shift" class="refentry"> <div class="refnamediv"> <h1 class="refname">array_shift</h1> <p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">array_shift</span> — <span class="dc-title">Shift an element off the beginning of array</span></p> </div> <div class="refsect1 description" id="refsect1-function.array-shift-description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <span class="methodname"><strong>array_shift</strong></span> ( <span class="methodparam"><span class="type">array</span> <code class="parameter reference">&$array</code></span> )</div> <p class="para rdfs-comment"> <span class="function"><strong>array_shift()</strong></span> shifts the first value of the <em><code class="parameter">array</code></em> off and returns it, shortening the <em><code class="parameter">array</code></em> by one element and moving everything down. All numerical array keys will be modified to start counting from zero while literal keys won't be touched. </p> <blockquote class="note"><p><strong class="note">Note</strong>: <span class="simpara">This function will <span class="function"><a href="function.reset.html" class="function">reset()</a></span> the <span class="type"><a href="language.types.array.html" class="type array">array</a></span> pointer of the input array after use.</span></p></blockquote> </div> <div class="refsect1 parameters" id="refsect1-function.array-shift-parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><em><code class="parameter">array</code></em></span> <dd> <p class="para"> The input array. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues" id="refsect1-function.array-shift-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns the shifted value, or <strong><code>NULL</code></strong> if <em><code class="parameter">array</code></em> is empty or is not an array. </p> </div> <div class="refsect1 examples" id="refsect1-function.array-shift-examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example" id="example-4981"> <p><strong>Example #1 <span class="function"><strong>array_shift()</strong></span> example</strong></p> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"> <span style="color: #0000BB"><?php<br />$stack </span><span style="color: #007700">= array(</span><span style="color: #DD0000">"orange"</span><span style="color: #007700">, </span><span style="color: #DD0000">"banana"</span><span style="color: #007700">, </span><span style="color: #DD0000">"apple"</span><span style="color: #007700">, </span><span style="color: #DD0000">"raspberry"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$fruit </span><span style="color: #007700">= </span><span style="color: #0000BB">array_shift</span><span style="color: #007700">(</span><span style="color: #0000BB">$stack</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">$stack</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span> </span> </code></div> </div> <div class="example-contents"><p>The above example will output:</p></div> <div class="example-contents screen"> <div class="cdata"><pre> Array ( [0] => banana [1] => apple [2] => raspberry ) </pre></div> </div> <div class="example-contents"><p> and <em>orange</em> will be assigned to <var class="varname"><var class="varname">$fruit</var></var>. </p></div> </div> </p> </div> <div class="refsect1 seealso" id="refsect1-function.array-shift-seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"> <span class="function"><a href="function.array-unshift.html" class="function" rel="rdfs-seeAlso">array_unshift()</a> - Prepend one or more elements to the beginning of an array</span></li> <li class="member"> <span class="function"><a href="function.array-push.html" class="function" rel="rdfs-seeAlso">array_push()</a> - Push one or more elements onto the end of array</span></li> <li class="member"> <span class="function"><a href="function.array-pop.html" class="function" rel="rdfs-seeAlso">array_pop()</a> - Pop the element off the end of array</span></li> </ul> </p> </div> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.array-search.html">array_search</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.array-slice.html">array_slice</a></div> <div class="up"><a href="ref.array.html">Array Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div></body></html>