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9 years ago
<?php
/**
 * Used for logging all php notices,warings and etc in a file when error reporting
 * is set and display_errors is off
 * @uses used in prod env for logging all type of error of php code in a file for further debugging
 * and code performance
 * @author Aditya Mehrotra<[email protected]>
 */
error_reporting(E_ALL);
ini_set("display_errors", "off");
define('ERROR_LOG_FILE', '/var/www/error.log');

/**
 * Custom error handler
 * @param integer $code
 * @param string $description
 * @param string $file
 * @param interger $line
 * @param mixed $context
 * @return boolean
 */
function handleError($code, $description, $file = null, $line = null, $context = null) {
    $displayErrors = ini_get("display_errors");
    $displayErrors = strtolower($displayErrors);
    if (error_reporting() === 0 || $displayErrors === "on") {
        return false;
    }
    list($error, $log) = mapErrorCode($code);
    $data = array(
        'level' => $log,
        'code' => $code,
        'error' => $error,
        'description' => $description,
        'file' => $file,
        'line' => $line,
        'context' => $context,
        'path' => $file,
        'message' => $error . ' (' . $code . '): ' . $description . ' in [' . $file . ', line ' . $line . ']'
    );
    return fileLog($data);
}

/**
 * This method is used to write data in file
 * @param mixed $logData
 * @param string $fileName
 * @return boolean
 */
function fileLog($logData, $fileName = ERROR_LOG_FILE) {
    $fh = fopen($fileName, 'a+');
    if (is_array($logData)) {
        $logData = print_r($logData, 1);
    }
    $status = fwrite($fh, $logData);
    fclose($fh);
    return ($status) ? true : false;
}

/**
 * Map an error code into an Error word, and log location.
 *
 * @param int $code Error code to map
 * @return array Array of error word, and log location.
 */
function mapErrorCode($code) {
    $error = $log = null;
    switch ($code) {
        case E_PARSE:
        case E_ERROR:
        case E_CORE_ERROR:
        case E_COMPILE_ERROR:
        case E_USER_ERROR:
            $error = 'Fatal Error';
            $log = LOG_ERR;
            break;
        case E_WARNING:
        case E_USER_WARNING:
        case E_COMPILE_WARNING:
        case E_RECOVERABLE_ERROR:
            $error = 'Warning';
            $log = LOG_WARNING;
            break;
        case E_NOTICE:
        case E_USER_NOTICE:
            $error = 'Notice';
            $log = LOG_NOTICE;
            break;
        case E_STRICT:
            $error = 'Strict';
            $log = LOG_NOTICE;
            break;
        case E_DEPRECATED:
        case E_USER_DEPRECATED:
            $error = 'Deprecated';
            $log = LOG_NOTICE;
            break;
        default :
            break;
    }
    return array($error, $log);
}

//calling custom error handler
set_error_handler("handleError");

print_r($arra); //undefined variable
print_r($dssdfdfgg); //undefined variable
include_once 'file.php'; //No such file or directory
?>
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