<?
function convertErrorReportingToString($errorLevel) {
    $errorLevels = [
        0 => 'E_ERROR',
        1 => 'E_WARNING',
        2 => 'E_PARSE',
        4 => 'E_NOTICE',
        8 => 'E_CORE_ERROR',
        16 => 'E_CORE_WARNING',
        32 => 'E_COMPILE_ERROR',
        64 => 'E_COMPILE_WARNING',
        128 => 'E_USER_ERROR',
        256 => 'E_USER_WARNING',
        512 => 'E_USER_NOTICE',
        1024 => 'E_STRICT',
        2048 => 'E_RECOVERABLE_ERROR',
        4096 => 'E_DEPRECATED',
        8192 => 'E_USER_DEPRECATED',
        16384 => 'E_ALL'
    ];

    $errorLevelString = '';
    foreach ($errorLevels as $level => $name) {
        if ($errorLevel & $level) {
            $errorLevelString .= ($errorLevelString ? ' | ' : '') . $name;
        }
    }

    return $errorLevelString;
}

// Convert integer 22527 to string representation
$errorLevel = 22527;
$errorLevelString = convertErrorReportingToString($errorLevel);
echo "Error reporting level: $errorLevelString";
?>