Description:
------------
A nice feature would be a php.ini configuration with access PHP_INI_ALL and with the name error_to_exception configured by following way:

ini_set("error_to_exception", E_ALL);

or in php.ini:

error_to_exception = E_WARNING | E_FATAL

The behavior would be that php error messages, would be converted to Exceptions. PHP could slowly create specific exception like, FileNotFoundException that is throw only when error_to_exception is enabled.
Would be possible to do the follow code:

Reproduce code:
---------------
<?

ini_set("error_to_exception", E_ALL);

try {
   $contents = file_get_contents("path/to/file");
}catch(WarningException $e){
   ...
}

?>
And on the future:
<?

ini_set("error_to_exception", E_ALL);

try {
   $contents = file_get_contents("path/to/file");
}catch(FileNotFoundException $e){
   ...
}catch(FileNotReadableException $e) {
   ...
}

?>