📄 func_array_filter.asp
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<h1>PHP array_filter() Function</h1>
<hr />
<a href="php_ref_array.asp"><img class="navup" src="../images/up.gif" alt="PHP Array Reference" border="0" /> Complete PHP Array Reference</a>
<hr />
<h2>Definition and Usage</h2>
<p>The array_filter() function passes each value in the array to a user-made function,
which returns either true or false, and returns an array only with the values
that returned true.</p>
<h2>Syntax</h2>
<table class="ex" cellspacing="0" border="1" width="100%">
<tr>
<td>
<pre>array_filter(array,function)</pre>
</td>
</tr>
</table>
<br />
<table class="ex" cellspacing="0" border="1" width="100%" cellpadding="3">
<tr>
<th align="left" valign="top" width="20%">Parameter</th>
<th align="left" valign="top" width="80%">Description</th>
</tr>
<tr>
<td valign="top">array</td>
<td valign="top">Required. Specifies an array</td>
</tr>
<tr>
<td valign="top">function</td>
<td valign="top">Required. Name of the user-made function</td>
</tr>
</table>
<br />
<hr />
<h2>Example</h2>
<table class="ex" cellspacing="0" border="1" width="100%">
<tr>
<td>
<pre><?php
function myfunction($v)
{
if ($v==="Horse")
{
return true;
}
return false;
}
$a=array(0=>"Dog",1=>"Cat",2=>"Horse");
print_r(array_filter($a,"myfunction"));
?> </pre>
</td>
</tr>
</table>
<p>The output of the code above will be:</p>
<table class="ex" cellspacing="0" border="1" width="100%">
<tr>
<td>
<pre>Array ( [2] => Horse )</pre>
</td>
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<br />
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<a href="php_ref_array.asp"><img class="navup" src="../images/up.gif" alt="PHP Array Reference" border="0" /> Complete PHP Array Reference</a>
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