Catching fatal PHP errors

Question

I am trying to make an errorhandler in PHP that catches fatal errors. Catching normal errors works! Fortunately!

But fatal errors is still a no go.

Could anyone please tell me what the problem is with my script below: Thanks a million. If so it means it has saved my day :-#

function shutdown(){ $isError = false; if($error = error_get_last()){ switch($error['type']){ case E_ERROR: case E_CORE_ERROR: case E_COMPILE_ERROR: case E_USER_ERROR: $isError = true; break; } } if ($isError){ echo "Script execution halted ({$error['message']})"; } else { echo "Script completed"; } } set_error_handler('errorHandler'); register_shutdown_function('shutdown'); function errorHandler( $errno, $errstr, $errfile, $errline, $errcontext){ echo 'Into '.__FUNCTION__.'() at line '.__LINE__. "\n\n---ERRNO---\n". print_r( $errno, true). "\n\n---ERRSTR---\n". print_r( $errstr, true). "\n\n---ERRFILE---\n". print_r( $errfile, true). "\n\n---ERRLINE---\n". print_r( $errline, true). "\n\n---ERRCONTEXT---\n".print_r( $errcontext, true). "\n\nBacktrace of errorHandler()\n". print_r( debug_backtrace(), true); } function a( ){ //echo "a()'s backtrace\n".print_r( debug_backtrace(), true); echo 'asdfasdf; // oops } function b(){ //echo "b()'s backtrace\n".print_r( debug_backtrace(), true); a(); } b(); ?>

Parse errors should be catchable imho since I already used a pre baked script that catches parse errors. Unfortunately though, the script is quite buggy.

Is the parse error intentional? PHP won't try to run code with parse errors. — Marek
– Marek, Commented Feb 16, 2015 at 14:32

Marek · Accepted Answer · 2015-02-16 17:17:07Z

The answer is: PHP won't execute any file with parse error.

This still means you can catch parse errors, but only in included/required files:

function shutdown() { $isError = false; if($error = error_get_last()){ switch($error['type']){ case E_ERROR: case E_CORE_ERROR: case E_COMPILE_ERROR: case E_USER_ERROR: case E_PARSE: $isError = true; break; } } if ($isError){ echo "Script execution halted ({$error['message']})"; } else { echo "Script completed"; } } register_shutdown_function('shutdown'); require 'broken.php'; // File with parse error

Notice I added E_PARSE constant to your switch(), this is the error you get.

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