restore_error_handler

Example 272. Demonstrate how restore_error_handler() behaves

<pre>
<?php
// Define several trivial custom error handlers

function custom_handler_one ($errno, $errstr, $errfile, $errline) {
    echo "custom_handler_one $errostr ($errno) in file $errfile on line $errline\n";
}

function custom_handler_two ($errno, $errstr, $errfile, $errline) {
    echo "custom_handler_two $errostr ($errno) in file $errfile on line $errline\n";
}

// Trigger an error - catch it with PHP's built-in error handler
trigger_error ("Some error");

// Set the first custom error handler
set_error_handler ('custom_handler_one');
trigger_error ("Some error");

// Set the second custom error handler
set_error_handler ('custom_handler_two');
trigger_error ("Some error");

// Return to using the previous error handler
restore_error_handler();
trigger_error ("Some error");

// Return to using the default error handler
restore_error_handler();
trigger_error ("Some error");
?>
</pre>