errors.php
public static function getSeverityAsString($severity)
    {
        static $map = 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',   # PHP 5.2
            E_DEPRECATED        => 'E_DEPRECATED',          # PHP 5.3
            E_USER_DEPRECATED   => 'E_USER_DEPRECATED',     # PHP 5.3
            E_ALL               => 'E_ALL'
        );

        return $map[$severity];
    }
public static function getSeverityAsString($severity)
    {
        static $map = 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',   # PHP 5.2
            E_DEPRECATED        => 'E_DEPRECATED',          # PHP 5.3
            E_USER_DEPRECATED   => 'E_USER_DEPRECATED',     # PHP 5.3
            E_ALL               => 'E_ALL'
        );

        return $map[$severity];
    }
Converts an error code into it's string representation.

@param $severity  PHP integer error code.

@return String version of error code.