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<title>Returns a list of all supported filters</title>
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<h1 class="refname">filter_list</h1>
<p class="verinfo">(PHP 5 >= 5.2.0)</p><p class="refpurpose"><span class="refname">filter_list</span> — <span class="dc-title">Returns a list of all supported filters</span></p>
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<div class="refsect1 description" id="refsect1-function.filter-list-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">array</span> <span class="methodname"><strong>filter_list</strong></span>
( <span class="methodparam">void</span>
)</div>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.filter-list-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns an array of names of all supported filters, empty array if there
are no such filters. Indexes of this array are not filter IDs, they can be
obtained with <span class="function"><a href="function.filter-id.html" class="function">filter_id()</a></span> from a name instead.
</p>
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<div class="refsect1 examples" id="refsect1-function.filter-list-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-5092">
<p><strong>Example #1 A <span class="function"><strong>filter_list()</strong></span> example</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">filter_list</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
something similar to:</p></div>
<div class="example-contents screen">
<div class="cdata"><pre>
Array
(
[0] => int
[1] => boolean
[2] => float
[3] => validate_regexp
[4] => validate_url
[5] => validate_email
[6] => validate_ip
[7] => string
[8] => stripped
[9] => encoded
[10] => special_chars
[11] => unsafe_raw
[12] => email
[13] => url
[14] => number_int
[15] => number_float
[16] => magic_quotes
[17] => callback
)
</pre></div>
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