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restore_error_handler

(PHP 4 >= 4.0.1, PHP 5)

restore_error_handler -- Restores the previous error handler function

说明

bool restore_error_handler ( void )

Used after changing the error handler function using set_error_handler(), to revert to the previous error handler (which could be the built-in or a user defined function).

返回值

This function always returns TRUE

范例

例子 1. restore_error_handler() example

Decide if unserialize() caused an error, then restore the original error handler.

<?php
function unserialize_handler($errno, $errstr)
{
    echo "Invalid serialized value.\n";
}

$serialized = 'foo';
set_error_handler('unserialize_handler');
$original = unserialize($serialized);
restore_error_handler();
?>

上例将输出：

Invalid serialized value.

注释

注: Calling restore_error_handler() from the error_handler function is ignored.

参见

error_reporting()
set_error_handler()
restore_exception_handler()
trigger_error()


add a note add a note User Contributed Notes
lsole at maresme dot net
15-Mar-2004 03:57
As the docs say, restore_error_handler() revert to the *previous error handler*... even if it is the same. A bug made me set twice my custom error handler and later when I was calling restore_error_handler() to restore the built-in handler nothing seemed to happen... this puzzled me for a while!
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