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<h1 class="refname">apd_set_session_trace</h1>
<p class="verinfo">(PECL apd 0.2-0.4)</p><p class="refpurpose"><span class="refname">apd_set_session_trace</span> — <span class="dc-title">Starts the session debugging</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.apd-set-session-trace-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type"><span class="type void">void</span></span> <span class="methodname"><strong>apd_set_session_trace</strong></span>
( <span class="methodparam"><span class="type">int</span> <code class="parameter">$debug_level</code></span>
[, <span class="methodparam"><span class="type">string</span> <code class="parameter">$dump_directory</code><span class="initializer"> = ini_get("apd.dumpdir")</span></span>
] )</div>
<p class="para rdfs-comment">
Starts debugging to <var class="filename">apd_dump_{process_id}</var> in the
dump directory.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.apd-set-session-trace-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<span class="term"><em><code class="parameter">
debug_level</code></em></span><dd>
<p class="para">An integer which is formed by adding
together the <em>XXX_TRACE</em> constants.</p><p class="para">It is not recommended
to use <strong><code>MEMORY_TRACE</code></strong>. It is very slow and does not appear to be accurate.
<strong><code>ASSIGNMENT_TRACE</code></strong> is not implemented yet.</p><p class="para">To turn on all
functional traces (TIMING, FUNCTIONS, ARGS SUMMARY (like strace -c)) use the value 99</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">dump_directory</code></em></span>
<dd>
<p class="para">
The directory in which the profile dump file is written. If not set,
the <em>apd.dumpdir</em> setting from the <var class="filename">php.ini</var> file is used.
</p>
</dd>
</dt>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.apd-set-session-trace-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
No value is returned.
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.apd-set-session-trace-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-431">
<p><strong>Example #1 <span class="function"><strong>apd_set_session_trace()</strong></span> example</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />apd_set_session_trace</span><span style="color: #007700">(</span><span style="color: #0000BB">99</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
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