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<title>Get string length in grapheme units</title>
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<h1 class="refname">grapheme_strlen</h1>
<p class="verinfo">(PHP 5 >= 5.3.0, PECL intl >= 1.0.0)</p><p class="refpurpose"><span class="refname">grapheme_strlen</span> — <span class="dc-title">Get string length in grapheme units</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.grapheme-strlen-description">
<h3 class="title">Description</h3>
<p class="para">Procedural style</p>
<div class="methodsynopsis dc-description">
<span class="type">int</span> <span class="methodname"><strong>grapheme_strlen</strong></span>
( <span class="methodparam"><span class="type">string</span> <code class="parameter">$input</code></span>
)</div>
<p class="para rdfs-comment">
Get string length in grapheme units (not bytes or characters)
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.grapheme-strlen-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<span class="term"><em><code class="parameter">input</code></em></span>
<dd>
<p class="para">
The string being measured for length. It must be a valid UTF-8 string.
</p>
</dd>
</dt>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.grapheme-strlen-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
The length of the string on success, and 0 if the string is empty.
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.grapheme-strlen-examples">
<h3 class="title">Examples</h3>
<div class="example" id="example-2681">
<p><strong>Example #1 <span class="function"><strong>grapheme_strlen()</strong></span> example</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br /><br />$char_a_ring_nfd </span><span style="color: #007700">= </span><span style="color: #DD0000">"a\xCC\x8A"</span><span style="color: #007700">; </span><span style="color: #FF8000">// 'LATIN SMALL LETTER A WITH RING ABOVE' (U+00E5) normalization form "D"<br /></span><span style="color: #0000BB">$char_o_diaeresis_nfd </span><span style="color: #007700">= </span><span style="color: #DD0000">"o\xCC\x88"</span><span style="color: #007700">; </span><span style="color: #FF8000">// 'LATIN SMALL LETTER O WITH DIAERESIS' (U+00F6) normalization form "D"<br /><br /></span><span style="color: #007700">print </span><span style="color: #0000BB">grapheme_strlen</span><span style="color: #007700">( </span><span style="color: #DD0000">'abc' </span><span style="color: #007700">. </span><span style="color: #0000BB">$char_a_ring_nfd </span><span style="color: #007700">. </span><span style="color: #0000BB">$char_o_diaeresis_nfd </span><span style="color: #007700">. </span><span style="color: #0000BB">$char_a_ring_nfd</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
</div>
<p class="para">The above example will output:</p>
<div class="example-contents screen">
<div class="cdata"><pre>
6
</pre></div>
</div>
</div>
<div class="refsect1 seealso" id="refsect1-function.grapheme-strlen-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member">
<a href="http://unicode.org/reports/tr29/#Grapheme_Cluster_Boundaries" class="link external">»
Unicode Text Segmentation: Grapheme Cluster Boundaries
</a>
</li>
</ul>
</p>
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