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<title>Creates an array by using one array for keys and another for its values</title>
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<div class="refnamediv">
<h1 class="refname">array_combine</h1>
<p class="verinfo">(PHP 5)</p><p class="refpurpose"><span class="refname">array_combine</span> — <span class="dc-title">Creates an array by using one array for keys and another for its values</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.array-combine-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">array</span> <span class="methodname"><strong>array_combine</strong></span>
( <span class="methodparam"><span class="type">array</span> <code class="parameter">$keys</code></span>
, <span class="methodparam"><span class="type">array</span> <code class="parameter">$values</code></span>
)</div>
<p class="para rdfs-comment">
Creates an <span class="type"><a href="language.types.array.html" class="type array">array</a></span> by using the values from the
<em><code class="parameter">keys</code></em> array as keys and the values from the
<em><code class="parameter">values</code></em> array as the corresponding values.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.array-combine-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<span class="term"><em><code class="parameter">keys</code></em></span>
<dd>
<p class="para">
Array of keys to be used. Illegal values for key will be
converted to <span class="type"><a href="language.types.string.html" class="type string">string</a></span>.
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">values</code></em></span>
<dd>
<p class="para">
Array of values to be used
</p>
</dd>
</dt>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.array-combine-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns the combined <span class="type"><a href="language.types.array.html" class="type array">array</a></span>, <strong><code>FALSE</code></strong> if the number of elements
for each array isn't equal.
</p>
</div>
<div class="refsect1 errors" id="refsect1-function.array-combine-errors">
<h3 class="title">Errors/Exceptions</h3>
<p class="para">
Throws <strong><code>E_WARNING</code></strong> if the number of elements in
<em><code class="parameter">keys</code></em> and <em><code class="parameter">values</code></em> does not
match.
</p>
</div>
<div class="refsect1 changelog" id="refsect1-function.array-combine-changelog">
<h3 class="title">Changelog</h3>
<p class="para">
<table class="doctable informaltable">
<thead>
<tr>
<th>Version</th>
<th>Description</th>
</tr>
</thead>
<tbody class="tbody">
<tr>
<td>5.4.0</td>
<td>
Previous versions issued <strong><code>E_WARNING</code></strong> and returned
<strong><code>FALSE</code></strong> for empty arrays.
</td>
</tr>
</tbody>
</table>
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.array-combine-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-4935">
<p><strong>Example #1 A simple <span class="function"><strong>array_combine()</strong></span> example</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />$a </span><span style="color: #007700">= array(</span><span style="color: #DD0000">'green'</span><span style="color: #007700">, </span><span style="color: #DD0000">'red'</span><span style="color: #007700">, </span><span style="color: #DD0000">'yellow'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$b </span><span style="color: #007700">= array(</span><span style="color: #DD0000">'avocado'</span><span style="color: #007700">, </span><span style="color: #DD0000">'apple'</span><span style="color: #007700">, </span><span style="color: #DD0000">'banana'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$c </span><span style="color: #007700">= </span><span style="color: #0000BB">array_combine</span><span style="color: #007700">(</span><span style="color: #0000BB">$a</span><span style="color: #007700">, </span><span style="color: #0000BB">$b</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">$c</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
(
[green] => avocado
[red] => apple
[yellow] => banana
)
</pre></div>
</div>
</div>
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.array-combine-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"> <span class="function"><a href="function.array-merge.html" class="function" rel="rdfs-seeAlso">array_merge()</a> - Merge one or more arrays</span></li>
<li class="member"> <span class="function"><a href="function.array-walk.html" class="function" rel="rdfs-seeAlso">array_walk()</a> - Apply a user function to every member of an array</span></li>
<li class="member"> <span class="function"><a href="function.array-values.html" class="function" rel="rdfs-seeAlso">array_values()</a> - Return all the values of an array</span></li>
</ul>
</p>
</div>
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