get_error_handler

(PHP 8 >= 8.5.0)

get_error_handler — Gets the user-defined error handler function

Description

Returns the current error handler function, if any.

Parameters

This function has no parameters.

Return Values

Returns the currently defined error handler (if any). If the built-in error handler is used null is returned.

The returned handler is the exact callable value that was passed to set_error_handler() to define it.

Examples

<?php

$handler = function (int $errno, string $errstr, ?string $errfile, ?int $errline) {
     echo "Error: " . $errstr . "\n";
};

var_dump(get_error_handler()); // NULL

set_error_handler($handler);

var_dump(get_error_handler() === $handler); // bool(true)

?>

Notes

<?php
if (!function_exists('get_error_handler')) {
    function noop_error_handler() {
    }
    function get_error_handler(): ?callable {
        $handler = set_error_handler('noop_error_handler');
        restore_error_handler();
        return $handler;
    }
}
?>

See Also

• error_reporting() - Sets which PHP errors are reported
• set_error_handler() - Sets a user-defined error handler function
• restore_error_handler() - Restores the previous error handler function
• trigger_error() - Generates a user-level error/warning/notice message
• error level constants