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<title>Find position of first occurrence of string in a string</title>
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<h1 class="refname">mb_strpos</h1>
<p class="verinfo">(PHP 4 >= 4.0.6, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">mb_strpos</span> — <span class="dc-title">Find position of first occurrence of string in a string</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.mb-strpos-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">int</span> <span class="methodname"><strong>mb_strpos</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">int</span> <code class="parameter">$offset</code><span class="initializer"> = 0</span></span>
[, <span class="methodparam"><span class="type">string</span> <code class="parameter">$encoding</code><span class="initializer"> = mb_internal_encoding()</span></span>
]] )</div>
<p class="para rdfs-comment">
Finds position of the first occurrence of a <span class="type"><a href="language.types.string.html" class="type string">string</a></span> in a <span class="type"><a href="language.types.string.html" class="type string">string</a></span>.
</p>
<p class="para">
Performs a multi-byte safe
<span class="function"><a href="function.strpos.html" class="function">strpos()</a></span> operation based on number of
characters. The first character's position is 0, the second character
position is 1, and so on.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.mb-strpos-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<code class="parameter">haystack</code></dt>
<dd>
<p class="para">
The <span class="type"><a href="language.types.string.html" class="type string">string</a></span> being checked.
</p>
</dd>
<dt>
<code class="parameter">needle</code></dt>
<dd>
<p class="para">
The string to find in <code class="parameter">haystack</code>. In contrast
with <span class="function"><a href="function.strpos.html" class="function">strpos()</a></span>, numeric values are not applied
as the ordinal value of a character.
</p>
</dd>
<dt>
<code class="parameter">offset</code></dt>
<dd>
<p class="para">
The search offset. If it is not specified, 0 is used.
A negative offset counts from the end of the string.
</p>
</dd>
<dt>
<code class="parameter">encoding</code></dt>
<dd>
<p class="para">The <code class="parameter">encoding</code>
parameter is the character encoding. If it is omitted, the internal character
encoding value will be used.</p>
</dd>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.mb-strpos-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns the numeric position of
the first occurrence of <code class="parameter">needle</code> in the
<code class="parameter">haystack</code> <span class="type"><a href="language.types.string.html" class="type string">string</a></span>. If
<code class="parameter">needle</code> is not found, it returns <strong><code>FALSE</code></strong>.
</p>
</div>
<div class="refsect1 changelog" id="refsect1-function.mb-strpos-changelog">
<h3 class="title">Changelog</h3>
<table class="doctable informaltable">
<thead>
<tr>
<th>Version</th>
<th>Description</th>
</tr>
</thead>
<tbody class="tbody">
<tr>
<td>7.1.0</td>
<td>
Support for negative <code class="parameter">offset</code>s has been added.
</td>
</tr>
</tbody>
</table>
</div>
<div class="refsect1 seealso" id="refsect1-function.mb-strpos-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"><span class="function"><a href="function.mb-internal-encoding.html" class="function" rel="rdfs-seeAlso">mb_internal_encoding()</a> - Set/Get internal character encoding</span></li>
<li class="member"><span class="function"><a href="function.strpos.html" class="function" rel="rdfs-seeAlso">strpos()</a> - Find the position of the first occurrence of a substring in a string</span></li>
</ul>
</p>
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