Work out PHP’s error reporting from an integer value

This post has some example PHP code which can be used to work out which error_reporting levels are reported and which are not from an integer value.

PHP code

Either use the $error = error_reporting() line to work out the error reporting levels for the current setting, or use a hard-coded value, replacing 22527 in the example code with the value you want to decode. Replace n with <br> tags if it’s being rendered on a webpage, or save the output to a variable if writing to file or emailing etc.

//$error = error_reporting();
$error = 22527;

$levels = array(
	E_ERROR => "E_ERROR",
	E_WARNING => "E_WARNING",
	E_PARSE => "E_PARSE",
	E_NOTICE => "E_NOTICE",
	E_CORE_ERROR => "E_CORE_ERROR",
	E_CORE_WARNING => "E_CORE_WARNING",
	E_COMPILE_ERROR => "E_COMPILE_ERROR",
	E_COMPILE_WARNING => "E_COMPILE_WARNING",
	E_USER_ERROR => "E_USER_ERROR",
	E_USER_WARNING => "E_USER_WARNING",
	E_USER_NOTICE => "E_USER_NOTICE",
	E_STRICT => "E_STRICT",
	E_RECOVERABLE_ERROR => "E_RECOVERABLE_ERROR",
	E_DEPRECATED => "E_DEPRECATED",
	E_USER_DEPRECATED => "E_USER_DEPRECATED"
);

echo "Report on:n";
foreach ($levels as $level => $description) {
	if ($level & $error) {
		echo "$descriptionn";
	}
}

echo "n";

echo "Do not report on:n";
foreach ($levels as $level => $description) {
	if ($level & ~$error) {
		echo "$descriptionn";
	}
}

Example output

Report on:
E_ERROR
E_WARNING
E_PARSE
E_NOTICE
E_CORE_ERROR
E_CORE_WARNING
E_COMPILE_ERROR
E_COMPILE_WARNING
E_USER_ERROR
E_USER_WARNING
E_USER_NOTICE
E_RECOVERABLE_ERROR
E_USER_DEPRECATED

Do not report on:
E_STRICT
E_DEPRECATED