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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head>  <title>Extract a slice of the array</title>  <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.array-shift.html">array_shift</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.array-splice.html">array_splice</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-slice" class="refentry"> <div class="refnamediv">  <h1 class="refname">array_slice</h1>  <p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">array_slice</span> &mdash; <span class="dc-title">Extract a slice of the array</span></p> </div> <div class="refsect1 description">  <h3 class="title">Description</h3>  <div class="methodsynopsis dc-description">   <span class="type">array</span> <span class="methodname"><b><b>array_slice</b></b></span>    ( <span class="methodparam"><span class="type">array</span> <tt class="parameter">$array</tt></span>   , <span class="methodparam"><span class="type">int</span> <tt class="parameter">$offset</tt></span>   [, <span class="methodparam"><span class="type">int</span> <tt class="parameter">$length</tt></span>   [, <span class="methodparam"><span class="type">bool</span> <tt class="parameter">$preserve_keys</tt></span>  ]] )</div>  <p class="para rdfs-comment">   <b>array_slice()</b> returns the sequence of elements   from the array <i><tt class="parameter">array</tt></i> as specified by the   <i><tt class="parameter">offset</tt></i> and <i><tt class="parameter">length</tt></i>   parameters.  </p> </div> <div class="refsect1 parameters">  <h3 class="title">Parameters</h3>  <p class="para">   <dl>    <dt>     <span class="term"><i><tt class="parameter">array</tt></i></span>     <dd>      <p class="para">       The input array.      </p>     </dd>    </dt>    <dt>     <span class="term"><i><tt class="parameter">offset</tt></i></span>     <dd>      <p class="para">       If <i><tt class="parameter">offset</tt></i> is non-negative, the sequence will       start at that offset in the <i><tt class="parameter">array</tt></i>.  If       <i><tt class="parameter">offset</tt></i> is negative, the sequence will       start that far from the end of the <i><tt class="parameter">array</tt></i>.      </p>     </dd>    </dt>    <dt>     <span class="term"><i><tt class="parameter">length</tt></i></span>     <dd>      <p class="para">       If <i><tt class="parameter">length</tt></i> is given and is positive, then       the sequence will have that many elements in it. If       <i><tt class="parameter">length</tt></i> is given and is negative then the       sequence will stop that many elements from the end of the       array. If it is omitted, then the sequence will have everything       from <i><tt class="parameter">offset</tt></i> up until the end of the       <i><tt class="parameter">array</tt></i>.      </p>     </dd>    </dt>    <dt>     <span class="term"><i><tt class="parameter">preserve_keys</tt></i></span>     <dd>      <p class="para">       Note that <b>array_slice()</b> will reorder and reset the       array indices by default. You can change this behaviour by setting       <i><tt class="parameter">preserve_keys</tt></i> to <b><tt>TRUE</tt></b>.      </p>     </dd>    </dt>   </dl>  </p> </div> <div class="refsect1 returnvalues">  <h3 class="title">Return Values</h3>  <p class="para">   Returns the slice.  </p> </div>  <div class="refsect1 changelog">  <h3 class="title">ChangeLog</h3>  <p class="para">   <table class="informaltable">    <colgroup>     <thead valign="middle">      <tr valign="middle">       <th colspan="1">Version</th>       <th colspan="1">Description</th>      </tr>     </thead>     <tbody valign="middle" class="tbody">      <tr valign="middle">       <td colspan="1" rowspan="1" align="left">5.0.2</td>       <td colspan="1" rowspan="1" align="left">        The optional <i><tt class="parameter">preserve_keys</tt></i> parameter was added.       </td>      </tr>     </tbody>    </colgroup>   </table>  </p> </div> <div class="refsect1 examples">  <h3 class="title">Examples</h3>  <p class="para">   <div class="example">    <p><b>Example #1 <b>array_slice()</b> examples</b></p>    <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br />$input&nbsp;</span><span style="color: #007700">=&nbsp;array(</span><span style="color: #DD0000">"a"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"b"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"c"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"d"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"e"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$output&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">array_slice</span><span style="color: #007700">(</span><span style="color: #0000BB">$input</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">2</span><span style="color: #007700">);&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;returns&nbsp;"c",&nbsp;"d",&nbsp;and&nbsp;"e"<br /></span><span style="color: #0000BB">$output&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">array_slice</span><span style="color: #007700">(</span><span style="color: #0000BB">$input</span><span style="color: #007700">,&nbsp;-</span><span style="color: #0000BB">2</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">1</span><span style="color: #007700">);&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;returns&nbsp;"d"<br /></span><span style="color: #0000BB">$output&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">array_slice</span><span style="color: #007700">(</span><span style="color: #0000BB">$input</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">0</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">3</span><span style="color: #007700">);&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;returns&nbsp;"a",&nbsp;"b",&nbsp;and&nbsp;"c"<br /><br />//&nbsp;note&nbsp;the&nbsp;differences&nbsp;in&nbsp;the&nbsp;array&nbsp;keys<br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">array_slice</span><span style="color: #007700">(</span><span style="color: #0000BB">$input</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">2</span><span style="color: #007700">,&nbsp;-</span><span style="color: #0000BB">1</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">array_slice</span><span style="color: #007700">(</span><span style="color: #0000BB">$input</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">2</span><span style="color: #007700">,&nbsp;-</span><span style="color: #0000BB">1</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">true</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">?&gt;</span></span></code></div>    </div>    <div class="example-contents"><p>The above example will output:</p></div>    <div class="example-contents"><pre><div class="cdata"><pre>Array(    [0] =&gt; c    [1] =&gt; d)Array(    [2] =&gt; c    [3] =&gt; d)</pre></div>    </pre></div>   </div>  </p> </div> <div class="refsect1 seealso">  <h3 class="title">See Also</h3>  <p class="para">   <ul class="simplelist">    <li class="member"><a href="function.array-splice.html" class="function" rel="rdfs-seeAlso">array_splice()</a></li>    <li class="member"><a href="function.unset.html" class="function" rel="rdfs-seeAlso">unset()</a></li>   </ul>  </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.array-shift.html">array_shift</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.array-splice.html">array_splice</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>
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