In this article, you will learn how to get the previous error handler in PHP. The restore_error_handler() function in PHP restores the previous error handler. This function is used to restore the previous error handler after changing it with the set_error_handler() function.
what is the syntax of the RESTORE_ERROR_HANDLER() function in php?
restore_error_handler();examples of the RESTORE_ERROR_HANDLER() function
Example 1. In this example, we restore the previous error handler after changing it with the set_error_handler() function.
<?php
// A user-defined error handler function
function myErrorHandler($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 function
set_error_handler("myErrorHandler");
$test=2;
// Trigger error
if ($test>1) {
trigger_error("A custom error has been triggered");
}
// Restore previous error handler
restore_error_handler();
// Trigger error again
if ($test>1) {
trigger_error("A custom error has been triggered");
}
?>
