(PHP 8 >= 8.5.0)
get_exception_handler — Gets the user-defined exception handler function
此函数没有参数。
Returns the currently defined exception handler.
If no handler is defined, null is returned.
The returned handler is the exact callable value that was passed to set_exception_handler() to define it.
示例 #1 get_exception_handler() example
<?php
$handler = function (Throwable $ex) {
echo "Exception: " . $ex::class . ": " . $ex->getMessage() . "\n";
};
var_dump(get_exception_handler()); // NULL
set_exception_handler($handler);
var_dump(get_exception_handler() === $handler); // bool(true)
?>Prior to PHP 8.5.0, this functionality can be provided by the following polyfill:
<?php
if (!function_exists('get_exception_handler')) {
function noop_exception_handler() {
}
function get_exception_handler(): ?callable {
$handler = set_exception_handler('noop_exception_handler');
restore_exception_handler();
return $handler;
}
}
?>