How can I get php to return 500 upon encountering a fatal exception?

Question

PHP fatal errors come back as status code 200 to the HTTP client. How can I make it return a status code 500 (Internal server error)?

Answer 1

You would have to catch the thrown error using try/catch and then use that catch block to send a header() with the 500 error.

try {
    ...badcode...
    throw new Exception('error');

} catch (Exception $e) {

    header("Status: 500 Server Error");
    var_dump($e->getMessage());
}

If the fatal exception is not surrounded by try {} catch blocks then you must register a global handler and use register_shutdown_function() to check for an error at script end.

Answer 2

Standard PHP configuration does return 500 when error occurs! Just make sure that your display_errors = off. You can simulate it with:

ini_set('display_errors', 0); 
noFunction();

On production display_errors directive is off by default.

Answer 3

This is exactly the problem I had yesterday and I found solution as follows:

1) first of all, you need to catch PHP fatal errors, which is error type E_ERROR. when this error occurs, script will be stored the error and terminate execution. you can get the stored error by calling function error_get_last().

2) before script terminated, a callback function register_shutdown_function() will always be called. so you need to register a error handler by this function to do what you want, in this case, return header 500 and a customized internal error page (optional).

function my_error_handler()
{
  $last_error = error_get_last();
  if ($last_error && $last_error['type']==E_ERROR)
      {
        header("HTTP/1.1 500 Internal Server Error");
        echo '...';//html for 500 page
      }
}
register_shutdown_function('my_error_handler');

Note: if you want to catch custom error type, which start with E_USER*, you can use function set_error_handler() to register error handler and trigger error by function trigger_error, however, this error handler can not handle E_ERROR error type. see explanation on php.net about error handler

Answer 4

Since PHP >= 5.4

http_response_code(500);
echo json_encode( [ 'success' => false , 'message' => 'Crazy thing just happened!' ]);
exit();

Please set the httpCode before echo.

Answer 5

It is not possible to handle PHP E_ERROR in any way according to the PHP documentation: http://www.php.net/manual/en/function.set-error-handler.php

Nor is is possible to handle "E_PARSE, E_CORE_ERROR, E_CORE_WARNING, E_COMPILE_ERROR, E_COMPILE_WARNING, and most of E_STRICT" according to that link.

You CAN provide a handler for the other error, warning, and notices including E_USER_ERROR, but that's really not as useful as it sounds since this error only gets thrown intentionally by the programmer with trigger_error().

And of course you can catch any Exception (even the ones thrown by the native PHP functions).

I agree that this is a problem. Servers should NOT return 200 OK when application code crashes and burns.

Answer 6

You can use php error handling

http://www.w3schools.com/php/php_error.asp