How to see errors suppressed by '@'?

Question

I joined this crazy company as a Site Administrator. Now I did some changes to my db configurations which have impacted the PHP scripts execution.

Strange part is PHP scripts just die. They don't throw any errors. When I went inside the scripts I realized they have used @ error suppression directive. Now the whole codebase is million of lines spread over thousands of file and don't want to run something like sed to replace '@'.

But '@' has made debugging impossible for me. Its like developers are closing their eyes and find vision dark are saying its night.

Is there a way I can undo error suppression done by '@' and let php log directive handle it. Touching the codebase is not an option. I am looking forward for a way where I can do this by modifying the php configuration or adding few lines in the bootstrap file.

Answer 1

If you have Xdebug installed and enabled (in development, you should) then you can set the xdebug.scream configuration option, which disables the @-operator.

Alternatively, the scream PECL extension also disables the @-operator (and that's all it does).

Basically you install the extension then set the scream.enabled ini setting to true/on.

Answer 2

Muted errors are still visible for the handler installed via set_error_handler. So you can just add something like this to your bootstrap file:

set_error_handler(function ($errno, $errstr, $errfile, $errline) {
    echo "$errstr at $errfile($errline)\n";
});

or, better,

set_error_handler(function ($errno, $errstr, $errfile, $errline) {
    throw new ErrorException($errstr, $errno, 1, $errfile, $errline);
});

which also would display the stack.