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                # PHP restore_error_handler() 函數 ## 定義和用法 restore_error_handler() 函數恢復之前的錯誤處理程序,該程序是由 set_error_handler() 函數改變的。 該函數永遠返回 true。 ### 語法 ``` restore_error_handler() ``` ## 提示和注釋 提示:之前的錯誤處理程序可能是在錯誤處理程序或用戶自定義函數中構建的。 ## 例子 ``` <?php //custom error handler function function customError($errno, $errstr, $errfile, $errline) { echo "<b>Custom error:</b> [$errno] $errstr<br />"; echo " Error on line $errline in $errfile<br />"; } //set user-defined error handler set_error_handler("customError"); $test=2; //trigger error if ($test>1) { trigger_error("A custom error has been triggered"); } //restore built-in error handler restore_error_handler //trigger error again if ($test>1) { trigger_error("A custom error has been triggered"); } ?> ``` 輸出: ``` **Custom error:** [1024] A custom error has been triggered Error on line 14 in C:\webfolder\test.php **Notice**: A custom error has been triggered in ** C:\webfolder\test.php** on line **21** ```
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