(PHP 4 >= 4.0.1, PHP 5, PHP 7)
restore_error_handler — 锟斤拷原之前锟侥达拷锟斤拷锟斤拷锟斤拷
锟斤拷使锟斤拷 set_error_handler() 锟侥憋拷锟斤拷锟斤拷锟斤拷锟街拷螅撕锟斤拷锟斤拷锟斤拷锟� 锟斤拷锟节伙拷原之前锟侥达拷锟斤拷锟斤拷锟斤拷锟�(锟斤拷锟斤拷锟斤拷锟斤拷锟矫的伙拷锟斤拷也锟斤拷锟斤拷锟斤拷锟矫伙拷锟斤拷锟斤拷锟斤拷暮锟斤拷锟�)锟斤拷
锟矫猴拷锟斤拷锟斤拷锟角凤拷锟斤拷 TRUE锟斤拷
Example #1 restore_error_handler() 锟斤拷锟斤拷
锟斤拷锟斤拷锟� unserialize() 锟斤拷锟斤拷锟斤拷一锟斤拷锟斤拷锟襟，斤拷锟斤拷锟斤拷 锟斤拷指锟皆拷锟斤拷拇锟斤拷锟斤拷锟斤拷锟斤拷锟�
<?php
function unserialize_handler($errno, $errstr)
{
echo "Invalid serialized value.\n";
}
$serialized = 'foo';
set_error_handler('unserialize_handler');
$original = unserialize($serialized);
restore_error_handler();
?>
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Invalid serialized value.