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<title>Returns previous Exception</title>
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<h1 class="refname">Exception::getPrevious</h1>
<p class="verinfo">(PHP 5 >= 5.3.0)</p><p class="refpurpose"><span class="refname">Exception::getPrevious</span> — <span class="dc-title">Returns previous Exception</span></p>
</div>
<div class="refsect1 description" id="refsect1-exception.getprevious-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="modifier">final</span> <span class="modifier">public</span> <span class="type"><a href="class.exception.html" class="type Exception">Exception</a></span> <span class="methodname"><strong>Exception::getPrevious</strong></span>
( <span class="methodparam">void</span>
)</div>
<p class="para rdfs-comment">
Returns previous Exception (the third parameter of <span class="methodname"><a href="exception.construct.html" class="methodname">Exception::__construct()</a></span>).
</p>
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<div class="refsect1 parameters" id="refsect1-exception.getprevious-parameters">
<h3 class="title">Parameters</h3>
<p class="para">This function has no parameters.</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-exception.getprevious-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns the previous <a href="class.exception.html" class="classname">Exception</a> if available
or <strong><code>NULL</code></strong> otherwise.
</p>
</div>
<div class="refsect1 examples" id="refsect1-exception.getprevious-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-293">
<p><strong>Example #1 <span class="methodname"><strong>Exception::getPrevious()</strong></span> example</strong></p>
<div class="example-contents"><p>
Looping over, and printing out, exception trace.
</p></div>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br /></span><span style="color: #007700">class </span><span style="color: #0000BB">MyCustomException </span><span style="color: #007700">extends </span><span style="color: #0000BB">Exception </span><span style="color: #007700">{}<br /><br />function </span><span style="color: #0000BB">doStuff</span><span style="color: #007700">() {<br /> try {<br /> throw new </span><span style="color: #0000BB">InvalidArgumentException</span><span style="color: #007700">(</span><span style="color: #DD0000">"You are doing it wrong!"</span><span style="color: #007700">, </span><span style="color: #0000BB">112</span><span style="color: #007700">);<br /> } catch(</span><span style="color: #0000BB">Exception $e</span><span style="color: #007700">) {<br /> throw new </span><span style="color: #0000BB">MyCustomException</span><span style="color: #007700">(</span><span style="color: #DD0000">"Something happened"</span><span style="color: #007700">, </span><span style="color: #0000BB">911</span><span style="color: #007700">, </span><span style="color: #0000BB">$e</span><span style="color: #007700">);<br /> }<br />}<br /><br /><br />try {<br /> </span><span style="color: #0000BB">doStuff</span><span style="color: #007700">();<br />} catch(</span><span style="color: #0000BB">Exception $e</span><span style="color: #007700">) {<br /> do {<br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"%s:%d %s (%d) [%s]\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">$e</span><span style="color: #007700">-></span><span style="color: #0000BB">getFile</span><span style="color: #007700">(), </span><span style="color: #0000BB">$e</span><span style="color: #007700">-></span><span style="color: #0000BB">getLine</span><span style="color: #007700">(), </span><span style="color: #0000BB">$e</span><span style="color: #007700">-></span><span style="color: #0000BB">getMessage</span><span style="color: #007700">(), </span><span style="color: #0000BB">$e</span><span style="color: #007700">-></span><span style="color: #0000BB">getCode</span><span style="color: #007700">(), </span><span style="color: #0000BB">get_class</span><span style="color: #007700">(</span><span style="color: #0000BB">$e</span><span style="color: #007700">));<br /> } while(</span><span style="color: #0000BB">$e </span><span style="color: #007700">= </span><span style="color: #0000BB">$e</span><span style="color: #007700">-></span><span style="color: #0000BB">getPrevious</span><span style="color: #007700">());<br />}<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
<div class="example-contents"><p>The above example will output
something similar to:</p></div>
<div class="example-contents screen">
<div class="cdata"><pre>
/home/bjori/ex.php:8 Something happened (911) [MyCustomException]
/home/bjori/ex.php:6 You are doing it wrong! (112) [InvalidArgumentException]
</pre></div>
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