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<title>Finds first occurrence of a string within another, case insensitive</title>
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<h1 class="refname">mb_stristr</h1>
<p class="verinfo">(PHP 5 >= 5.2.0)</p><p class="refpurpose"><span class="refname">mb_stristr</span> — <span class="dc-title">Finds first occurrence of a string within another, case insensitive</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.mb-stristr-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">string</span> <span class="methodname"><strong>mb_stristr</strong></span>
( <span class="methodparam"><span class="type">string</span> <code class="parameter">$haystack</code></span>
, <span class="methodparam"><span class="type">string</span> <code class="parameter">$needle</code></span>
[, <span class="methodparam"><span class="type">bool</span> <code class="parameter">$before_needle</code><span class="initializer"> = false</span></span>
[, <span class="methodparam"><span class="type">string</span> <code class="parameter">$encoding</code><span class="initializer"> = mb_internal_encoding()</span></span>
]] )</div>
<p class="para rdfs-comment">
<span class="function"><strong>mb_stristr()</strong></span> finds the first occurrence of
<em><code class="parameter">needle</code></em> in <em><code class="parameter">haystack</code></em>
and returns the portion of <em><code class="parameter">haystack</code></em>.
Unlike <span class="function"><a href="function.mb-strstr.html" class="function">mb_strstr()</a></span>,
<span class="function"><strong>mb_stristr()</strong></span> is case-insensitive.
If <em><code class="parameter">needle</code></em> is not found, it returns <strong><code>FALSE</code></strong>.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.mb-stristr-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<span class="term"><em><code class="parameter">haystack</code></em></span>
<dd>
<p class="para">
The string from which to get the first occurrence
of <em><code class="parameter">needle</code></em>
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">needle</code></em></span>
<dd>
<p class="para">
The string to find in <em><code class="parameter">haystack</code></em>
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">before_needle</code></em></span>
<dd>
<p class="para">
Determines which portion of <em><code class="parameter">haystack</code></em>
this function returns.
If set to <strong><code>TRUE</code></strong>, it returns all of <em><code class="parameter">haystack</code></em>
from the beginning to the first occurrence of <em><code class="parameter">needle</code></em> (excluding needle).
If set to <strong><code>FALSE</code></strong>, it returns all of <em><code class="parameter">haystack</code></em>
from the first occurrence of <em><code class="parameter">needle</code></em> to the end (including needle).
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">encoding</code></em></span>
<dd>
<p class="para">
Character encoding name to use.
If it is omitted, internal character encoding is used.
</p>
</dd>
</dt>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.mb-stristr-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns the portion of <em><code class="parameter">haystack</code></em>,
or <strong><code>FALSE</code></strong> if <em><code class="parameter">needle</code></em> is not found.
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.mb-stristr-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"> <span class="function"><a href="function.stristr.html" class="function" rel="rdfs-seeAlso">stristr()</a> - Case-insensitive strstr</span></li>
<li class="member"> <span class="function"><a href="function.strstr.html" class="function" rel="rdfs-seeAlso">strstr()</a> - Find the first occurrence of a string</span></li>
<li class="member"> <span class="function"><a href="function.mb-strstr.html" class="function" rel="rdfs-seeAlso">mb_strstr()</a> - Finds first occurrence of a string within another</span></li>
</ul>
</p>
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