/php/function.restore-exception-handler.html

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  3.  <head>
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  4.   <meta http-equiv="content-type" content="text/html; charset=UTF-8">
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  5.   <title>恢复之前定义过的异常处理函数。</title>
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  6. 

  7.  </head>
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  8.  <body><div class="manualnavbar" style="text-align: center;">
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  9.  <div class="prev" style="text-align: left; float: left;"><a href="function.restore-error-handler.html">restore_error_handler</a></div>
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  10.  <div class="next" style="text-align: right; float: right;"><a href="function.set-error-handler.html">set_error_handler</a></div>
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  11.  <div class="up"><a href="ref.errorfunc.html">错误处理 函数</a></div>
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  12.  <div class="home"><a href="index.html">PHP Manual</a></div>
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  13. </div><hr /><div id="function.restore-exception-handler" class="refentry">
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  14.  <div class="refnamediv">
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  15.   <h1 class="refname">restore_exception_handler</h1>
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  16.   <p class="verinfo">(PHP 5)</p><p class="refpurpose"><span class="refname">restore_exception_handler</span> &mdash; <span class="dc-title">
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  17.    恢复之前定义过的异常处理函数。
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  18.   </span></p>
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  19. 

  20.  </div>
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  21. 

  22.  <div class="refsect1 description" id="refsect1-function.restore-exception-handler-description">
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  23.   <h3 class="title">说明</h3>
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  24.   <div class="methodsynopsis dc-description">
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  25.    <span class="type">bool</span> <span class="methodname"><strong>restore_exception_handler</strong></span>
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  26.     ( <span class="methodparam">void</span>
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  27.    )</div>
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  28. 

  29.   <p class="para rdfs-comment">
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  30.    在使用  <span class="function"><a href="function.set-exception-handler.html" class="function">set_exception_handler()</a></span> 改变异常处理函数之后，此函数可以
    31. 

  31.    用于还原之前的异常处理程序(可以是内置的或者也可以是用户所定义的函数)。
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  32.   </p>
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  33.  </div>
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  34. 

  35. 

  36.  <div class="refsect1 returnvalues" id="refsect1-function.restore-exception-handler-returnvalues">
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  37.   <h3 class="title">返回值</h3>
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  38.   <p class="para">
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  39.    该函数总是返回 <strong><code>TRUE</code></strong>。
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  40.   </p>
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  41.  </div>
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  42. 

  43. 

  44.  <div class="refsect1 examples" id="refsect1-function.restore-exception-handler-examples">
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  45.   <h3 class="title">范例</h3>
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  46.   <p class="para">
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  47.    <div class="example" id="example-410">
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  48.     <p><strong>Example #1  <span class="function"><strong>restore_exception_handler()</strong></span> 范例</strong></p>
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  49.     <div class="example-contents">
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  50. <div class="phpcode"><code><span style="color: #000000">
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  51. <span style="color: #0000BB">&lt;?php<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">function&nbsp;</span><span style="color: #0000BB">exception_handler_1</span><span style="color: #007700">(</span><span style="color: #0000BB">Exception&nbsp;$e</span><span style="color: #007700">)<br />&nbsp;&nbsp;&nbsp;&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #DD0000">'['&nbsp;</span><span style="color: #007700">.&nbsp;</span><span style="color: #0000BB">__FUNCTION__&nbsp;</span><span style="color: #007700">.&nbsp;</span><span style="color: #DD0000">']&nbsp;'&nbsp;</span><span style="color: #007700">.&nbsp;</span><span style="color: #0000BB">$e</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">getMessage</span><span style="color: #007700">();<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;function&nbsp;</span><span style="color: #0000BB">exception_handler_2</span><span style="color: #007700">(</span><span style="color: #0000BB">Exception&nbsp;$e</span><span style="color: #007700">)<br />&nbsp;&nbsp;&nbsp;&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #DD0000">'['&nbsp;</span><span style="color: #007700">.&nbsp;</span><span style="color: #0000BB">__FUNCTION__&nbsp;</span><span style="color: #007700">.&nbsp;</span><span style="color: #DD0000">']&nbsp;'&nbsp;</span><span style="color: #007700">.&nbsp;</span><span style="color: #0000BB">$e</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">getMessage</span><span style="color: #007700">();<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">set_exception_handler</span><span style="color: #007700">(</span><span style="color: #DD0000">'exception_handler_1'</span><span style="color: #007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">set_exception_handler</span><span style="color: #007700">(</span><span style="color: #DD0000">'exception_handler_2'</span><span style="color: #007700">);<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">restore_exception_handler</span><span style="color: #007700">();<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;throw&nbsp;new&nbsp;</span><span style="color: #0000BB">Exception</span><span style="color: #007700">(</span><span style="color: #DD0000">'This&nbsp;triggers&nbsp;the&nbsp;first&nbsp;exception&nbsp;handler...'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?&gt;</span>
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  52. </span>
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  53. </code></div>
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  54.     </div>
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  55. 

  56.     <div class="example-contents"><p>以上例程会输出：</p></div>
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  57.     <div class="example-contents screen">
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  58. <div class="cdata"><pre>
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  59. [exception_handler_1] This triggers the first exception handler...
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  60. </pre></div>
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  61.     </div>
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  62.    </div>
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  63.   </p>
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  64.  </div>
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  65. 

  66.  
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  67.  <div class="refsect1 seealso" id="refsect1-function.restore-exception-handler-seealso">
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  68.   <h3 class="title">参见</h3>
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  69.   <p class="para">
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  70.    <ul class="simplelist">
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  71.     <li class="member"> <span class="function"><a href="function.set-exception-handler.html" class="function" rel="rdfs-seeAlso">set_exception_handler()</a> - 设置一个用户定义的异常处理函数。</span></li>
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  72.     <li class="member"> <span class="function"><a href="function.set-error-handler.html" class="function" rel="rdfs-seeAlso">set_error_handler()</a> - 设置一个用户定义的错误处理函数</span></li>
    73. 

  73.     <li class="member"> <span class="function"><a href="function.restore-error-handler.html" class="function" rel="rdfs-seeAlso">restore_error_handler()</a> - 还原之前的错误处理函数</span></li>
    74. 

  74.     <li class="member"> <span class="function"><a href="function.error-reporting.html" class="function" rel="rdfs-seeAlso">error_reporting()</a> - 设置应该报告何种 PHP 错误</span></li>
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  75.    </ul>
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  76.   </p>
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  77.  </div>
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