downloads | documentation | faq | getting help | mailing lists | licenses | wiki | reporting bugs | php.net sites | links | conferences | my php.net

search for in the

Our source is open

The syntax highlighted source is automatically generated by PHP from the plaintext script. If you're interested in what's behind the several functions we used, you can always take a look at the source of the following files:

Of course, if you want to see the source of this page, we have it available. You can also browse the SVN repository for this website on svn.php.net.

Source of: /manual/en/language.exceptions.extending.php

<?php
include_once $_SERVER['DOCUMENT_ROOT'] . '/include/shared-manual.inc';
$TOC = array();
$PARENTS = array();
include_once dirname(__FILE__) ."/toc/language.exceptions.inc";
$setup = array (
  'home' =>
  array (
    0 => 'index.php',
    1 => 'PHP Manual',
  ),
  'head' =>
  array (
    0 => 'UTF-8',
    1 => 'en',
  ),
  'this' =>
  array (
    0 => 'language.exceptions.extending.php',
    1 => 'Extending Exceptions',
  ),
  'up' =>
  array (
    0 => 'language.exceptions.php',
    1 => 'Exceptions',
  ),
  'prev' =>
  array (
    0 => 'language.exceptions.php',
    1 => 'Exceptions',
  ),
  'next' =>
  array (
    0 => 'language.references.php',
    1 => 'References Explained',
  ),
);
$setup["toc"] = $TOC;
$setup["parents"] = $PARENTS;
manual_setup($setup);

manual_header();
?>
<div id="language.exceptions.extending" class="sect1">
   <h2 class="title">Extending Exceptions</h2>
   <p class="para">
    A User defined Exception class can be defined by extending the built-in
    Exception class. The members and properties below, show what is accessible
    within the child class that derives from the built-in Exception class.
   </p>
   <div class="example">
    <p><b>Example #1 The Built in Exception class</b></p>
    <div class="example-contents programlisting">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /></span><span style="color: #007700">class&nbsp;</span><span style="color: #0000BB">Exception<br /></span><span style="color: #007700">{<br />&nbsp;&nbsp;&nbsp;&nbsp;protected&nbsp;</span><span style="color: #0000BB">$message&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'Unknown&nbsp;exception'</span><span style="color: #007700">;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;exception&nbsp;message<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">private&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$string</span><span style="color: #007700">;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;__toString&nbsp;cache<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">protected&nbsp;</span><span style="color: #0000BB">$code&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">0</span><span style="color: #007700">;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;user&nbsp;defined&nbsp;exception&nbsp;code<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">protected&nbsp;</span><span style="color: #0000BB">$file</span><span style="color: #007700">;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;source&nbsp;filename&nbsp;of&nbsp;exception<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">protected&nbsp;</span><span style="color: #0000BB">$line</span><span style="color: #007700">;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;source&nbsp;line&nbsp;of&nbsp;exception<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">private&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$trace</span><span style="color: #007700">;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;backtrace<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">private&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$previous</span><span style="color: #007700">;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;previous&nbsp;exception&nbsp;if&nbsp;nested&nbsp;exception<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">public&nbsp;function&nbsp;</span><span style="color: #0000BB">__construct</span><span style="color: #007700">(</span><span style="color: #0000BB">$message&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">null</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$code&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">0</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">Exception&nbsp;$previous&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">null</span><span style="color: #007700">);<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;final&nbsp;private&nbsp;function&nbsp;</span><span style="color: #0000BB">__clone</span><span style="color: #007700">();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;Inhibits&nbsp;cloning&nbsp;of&nbsp;exceptions.<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">final&nbsp;public&nbsp;&nbsp;function&nbsp;</span><span style="color: #0000BB">getMessage</span><span style="color: #007700">();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;message&nbsp;of&nbsp;exception<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">final&nbsp;public&nbsp;&nbsp;function&nbsp;</span><span style="color: #0000BB">getCode</span><span style="color: #007700">();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;code&nbsp;of&nbsp;exception<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">final&nbsp;public&nbsp;&nbsp;function&nbsp;</span><span style="color: #0000BB">getFile</span><span style="color: #007700">();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;source&nbsp;filename<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">final&nbsp;public&nbsp;&nbsp;function&nbsp;</span><span style="color: #0000BB">getLine</span><span style="color: #007700">();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;source&nbsp;line<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">final&nbsp;public&nbsp;&nbsp;function&nbsp;</span><span style="color: #0000BB">getTrace</span><span style="color: #007700">();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;an&nbsp;array&nbsp;of&nbsp;the&nbsp;backtrace()<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">final&nbsp;public&nbsp;&nbsp;function&nbsp;</span><span style="color: #0000BB">getPrevious</span><span style="color: #007700">();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;previous&nbsp;exception<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">final&nbsp;public&nbsp;&nbsp;function&nbsp;</span><span style="color: #0000BB">getTraceAsString</span><span style="color: #007700">();&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;formatted&nbsp;string&nbsp;of&nbsp;trace<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;Overrideable&nbsp;*/<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">public&nbsp;function&nbsp;</span><span style="color: #0000BB">__toString</span><span style="color: #007700">();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;formatted&nbsp;string&nbsp;for&nbsp;display<br /></span><span style="color: #007700">}<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

   </div>
   <p class="para">
    If a class extends the built-in Exception class and re-defines the <a href="language.oop5.decon.php" class="link">constructor</a>, it is highly recommended
    that it also call <a href="language.oop5.paamayim-nekudotayim.php" class="link">parent::__construct()</a>
    to ensure all available data has been properly assigned. The <a href="language.oop5.magic.php" class="link">__toString()</a> method can be overridden
    to provide a custom output when the object is presented as a string.
   </p>
   <blockquote><p><b class="note">Note</b>:
   
     Exceptions cannot be cloned. Attempting to <a href="language.oop5.cloning.php" class="link">clone</a> an Exception will result in a
     <i>E_FATAL</i> error.
    <br />
   </p></blockquote>
   <div class="example">
    <p><b>Example #2 Extending the Exception class</b></p>
    <div class="example-contents programlisting">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /></span><span style="color: #FF8000">/**<br />&nbsp;*&nbsp;Define&nbsp;a&nbsp;custom&nbsp;exception&nbsp;class<br />&nbsp;*/<br /></span><span style="color: #007700">class&nbsp;</span><span style="color: #0000BB">MyException&nbsp;</span><span style="color: #007700">extends&nbsp;</span><span style="color: #0000BB">Exception<br /></span><span style="color: #007700">{<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;Redefine&nbsp;the&nbsp;exception&nbsp;so&nbsp;message&nbsp;isn't&nbsp;optional<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">public&nbsp;function&nbsp;</span><span style="color: #0000BB">__construct</span><span style="color: #007700">(</span><span style="color: #0000BB">$message</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$code&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">0</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">Exception&nbsp;$previous&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">null</span><span style="color: #007700">)&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;some&nbsp;code<br />&nbsp;&nbsp;&nbsp;&nbsp;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;//&nbsp;make&nbsp;sure&nbsp;everything&nbsp;is&nbsp;assigned&nbsp;properly<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">parent</span><span style="color: #007700">::</span><span style="color: #0000BB">__construct</span><span style="color: #007700">(</span><span style="color: #0000BB">$message</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$code</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$previous</span><span style="color: #007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;custom&nbsp;string&nbsp;representation&nbsp;of&nbsp;object<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">public&nbsp;function&nbsp;</span><span style="color: #0000BB">__toString</span><span style="color: #007700">()&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;</span><span style="color: #0000BB">__CLASS__&nbsp;</span><span style="color: #007700">.&nbsp;</span><span style="color: #DD0000">":&nbsp;[</span><span style="color: #007700">{</span><span style="color: #0000BB">$this</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">code</span><span style="color: #007700">}</span><span style="color: #DD0000">]:&nbsp;</span><span style="color: #007700">{</span><span style="color: #0000BB">$this</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">message</span><span style="color: #007700">}</span><span style="color: #DD0000">\n"</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;function&nbsp;</span><span style="color: #0000BB">customFunction</span><span style="color: #007700">()&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #DD0000">"A&nbsp;custom&nbsp;function&nbsp;for&nbsp;this&nbsp;type&nbsp;of&nbsp;exception\n"</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br />}<br /><br /><br /></span><span style="color: #FF8000">/**<br />&nbsp;*&nbsp;Create&nbsp;a&nbsp;class&nbsp;to&nbsp;test&nbsp;the&nbsp;exception<br />&nbsp;*/<br /></span><span style="color: #007700">class&nbsp;</span><span style="color: #0000BB">TestException<br /></span><span style="color: #007700">{<br />&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;</span><span style="color: #0000BB">$var</span><span style="color: #007700">;<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;const&nbsp;</span><span style="color: #0000BB">THROW_NONE&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">0</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;const&nbsp;</span><span style="color: #0000BB">THROW_CUSTOM&nbsp;&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">1</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;const&nbsp;</span><span style="color: #0000BB">THROW_DEFAULT&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">2</span><span style="color: #007700">;<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;function&nbsp;</span><span style="color: #0000BB">__construct</span><span style="color: #007700">(</span><span style="color: #0000BB">$avalue&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">self</span><span style="color: #007700">::</span><span style="color: #0000BB">THROW_NONE</span><span style="color: #007700">)&nbsp;{<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;switch&nbsp;(</span><span style="color: #0000BB">$avalue</span><span style="color: #007700">)&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;case&nbsp;</span><span style="color: #0000BB">self</span><span style="color: #007700">::</span><span style="color: #0000BB">THROW_CUSTOM</span><span style="color: #007700">:<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;throw&nbsp;custom&nbsp;exception<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">throw&nbsp;new&nbsp;</span><span style="color: #0000BB">MyException</span><span style="color: #007700">(</span><span style="color: #DD0000">'1&nbsp;is&nbsp;an&nbsp;invalid&nbsp;parameter'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">5</span><span style="color: #007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;break;<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;case&nbsp;</span><span style="color: #0000BB">self</span><span style="color: #007700">::</span><span style="color: #0000BB">THROW_DEFAULT</span><span style="color: #007700">:<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;throw&nbsp;default&nbsp;one.<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">throw&nbsp;new&nbsp;</span><span style="color: #0000BB">Exception</span><span style="color: #007700">(</span><span style="color: #DD0000">'2&nbsp;is&nbsp;not&nbsp;allowed&nbsp;as&nbsp;a&nbsp;parameter'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">6</span><span style="color: #007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;break;<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;default:&nbsp;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;No&nbsp;exception,&nbsp;object&nbsp;will&nbsp;be&nbsp;created.<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$this</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">var&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">$avalue</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;break;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br />}<br /><br /><br /></span><span style="color: #FF8000">//&nbsp;Example&nbsp;1<br /></span><span style="color: #007700">try&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$o&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">TestException</span><span style="color: #007700">(</span><span style="color: #0000BB">TestException</span><span style="color: #007700">::</span><span style="color: #0000BB">THROW_CUSTOM</span><span style="color: #007700">);<br />}&nbsp;catch&nbsp;(</span><span style="color: #0000BB">MyException&nbsp;$e</span><span style="color: #007700">)&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;Will&nbsp;be&nbsp;caught<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">echo&nbsp;</span><span style="color: #DD0000">"Caught&nbsp;my&nbsp;exception\n"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$e</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$e</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">customFunction</span><span style="color: #007700">();<br />}&nbsp;catch&nbsp;(</span><span style="color: #0000BB">Exception&nbsp;$e</span><span style="color: #007700">)&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;Skipped<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">echo&nbsp;</span><span style="color: #DD0000">"Caught&nbsp;Default&nbsp;Exception\n"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$e</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #FF8000">//&nbsp;Continue&nbsp;execution<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$o</span><span style="color: #007700">);&nbsp;</span><span style="color: #FF8000">//&nbsp;Null<br /></span><span style="color: #007700">echo&nbsp;</span><span style="color: #DD0000">"\n\n"</span><span style="color: #007700">;<br /><br /><br /></span><span style="color: #FF8000">//&nbsp;Example&nbsp;2<br /></span><span style="color: #007700">try&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$o&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">TestException</span><span style="color: #007700">(</span><span style="color: #0000BB">TestException</span><span style="color: #007700">::</span><span style="color: #0000BB">THROW_DEFAULT</span><span style="color: #007700">);<br />}&nbsp;catch&nbsp;(</span><span style="color: #0000BB">MyException&nbsp;$e</span><span style="color: #007700">)&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;Doesn't&nbsp;match&nbsp;this&nbsp;type<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">echo&nbsp;</span><span style="color: #DD0000">"Caught&nbsp;my&nbsp;exception\n"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$e</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$e</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">customFunction</span><span style="color: #007700">();<br />}&nbsp;catch&nbsp;(</span><span style="color: #0000BB">Exception&nbsp;$e</span><span style="color: #007700">)&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;Will&nbsp;be&nbsp;caught<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">echo&nbsp;</span><span style="color: #DD0000">"Caught&nbsp;Default&nbsp;Exception\n"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$e</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #FF8000">//&nbsp;Continue&nbsp;execution<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$o</span><span style="color: #007700">);&nbsp;</span><span style="color: #FF8000">//&nbsp;Null<br /></span><span style="color: #007700">echo&nbsp;</span><span style="color: #DD0000">"\n\n"</span><span style="color: #007700">;<br /><br /><br /></span><span style="color: #FF8000">//&nbsp;Example&nbsp;3<br /></span><span style="color: #007700">try&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$o&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">TestException</span><span style="color: #007700">(</span><span style="color: #0000BB">TestException</span><span style="color: #007700">::</span><span style="color: #0000BB">THROW_CUSTOM</span><span style="color: #007700">);<br />}&nbsp;catch&nbsp;(</span><span style="color: #0000BB">Exception&nbsp;$e</span><span style="color: #007700">)&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;Will&nbsp;be&nbsp;caught<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">echo&nbsp;</span><span style="color: #DD0000">"Default&nbsp;Exception&nbsp;caught\n"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$e</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #FF8000">//&nbsp;Continue&nbsp;execution<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$o</span><span style="color: #007700">);&nbsp;</span><span style="color: #FF8000">//&nbsp;Null<br /></span><span style="color: #007700">echo&nbsp;</span><span style="color: #DD0000">"\n\n"</span><span style="color: #007700">;<br /><br /><br /></span><span style="color: #FF8000">//&nbsp;Example&nbsp;4<br /></span><span style="color: #007700">try&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$o&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">TestException</span><span style="color: #007700">();<br />}&nbsp;catch&nbsp;(</span><span style="color: #0000BB">Exception&nbsp;$e</span><span style="color: #007700">)&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;Skipped,&nbsp;no&nbsp;exception<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">echo&nbsp;</span><span style="color: #DD0000">"Default&nbsp;Exception&nbsp;caught\n"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$e</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #FF8000">//&nbsp;Continue&nbsp;execution<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$o</span><span style="color: #007700">);&nbsp;</span><span style="color: #FF8000">//&nbsp;TestException<br /></span><span style="color: #007700">echo&nbsp;</span><span style="color: #DD0000">"\n\n"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

   </div>
  </div><?php manual_footer(); ?>
 
show source | credits | sitemap | contact | advertising | mirror sites