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<title>Write data into shared memory block</title>
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<h1 class="refname">shmop_write</h1>
<p class="verinfo">(PHP 4 >= 4.0.4, PHP 5)</p><p class="refpurpose"><span class="refname">shmop_write</span> — <span class="dc-title">Write data into shared memory block</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.shmop-write-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">int</span> <span class="methodname"><strong>shmop_write</strong></span>
( <span class="methodparam"><span class="type">int</span> <code class="parameter">$shmid</code></span>
, <span class="methodparam"><span class="type">string</span> <code class="parameter">$data</code></span>
, <span class="methodparam"><span class="type">int</span> <code class="parameter">$offset</code></span>
)</div>
<p class="para rdfs-comment">
<span class="function"><strong>shmop_write()</strong></span> will write a string into shared memory block.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.shmop-write-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<span class="term"><em><code class="parameter">shmid</code></em></span>
<dd>
<p class="para">
The shared memory block identifier created by
<span class="function"><a href="function.shmop-open.html" class="function">shmop_open()</a></span>
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">data</code></em></span>
<dd>
<p class="para">
A string to write into shared memory block
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">offset</code></em></span>
<dd>
<p class="para">
Specifies where to start writing data inside the shared memory
segment.
</p>
</dd>
</dt>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.shmop-write-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
The size of the written <em><code class="parameter">data</code></em>, or <strong><code>FALSE</code></strong> on
failure.
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.shmop-write-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-3728">
<p><strong>Example #1 Writing to shared memory block</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />$shm_bytes_written </span><span style="color: #007700">= </span><span style="color: #0000BB">shmop_write</span><span style="color: #007700">(</span><span style="color: #0000BB">$shm_id</span><span style="color: #007700">, </span><span style="color: #0000BB">$my_string</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
</div>
</p>
<p class="para">
This example will write data inside <em>$my_string</em> into
shared memory block, <em>$shm_bytes_written</em> will contain
the number of bytes written.
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.shmop-write-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"> <span class="function"><a href="function.shmop-read.html" class="function" rel="rdfs-seeAlso">shmop_read()</a> - Read data from shared memory block</span></li>
</ul>
</p>
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