- print_r: documentation ( source)
- restore_error_handler: documentation ( source)
- set_error_handler: documentation ( source)
<?php
function bar() { echo 'Bar';}
function foo() { echo 'X';
restore_error_handler();
$a = $c;
}
set_error_handler('bar');
set_error_handler('foo');
foo();
$a = $b;
print_r( set_error_handler('var_dump') );