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<?php |
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class Debug { |
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public static $LOG_DISABLED = -1; |
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public static $LOG_NORMAL = 0; |
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public static $LOG_VERBOSE = 1; |
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public static $LOG_EXTENDED = 2; |
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private static $enabled = false; |
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private static $quiet = false; |
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private static $logfile = false; |
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private static $loglevel = 0; |
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public static function set_logfile($logfile) { |
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Debug::$logfile = $logfile; |
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} |
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public static function enabled() { |
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return Debug::$enabled; |
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} |
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public static function set_enabled($enable) { |
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Debug::$enabled = $enable; |
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} |
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public static function set_quiet($quiet) { |
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Debug::$quiet = $quiet; |
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} |
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public static function set_loglevel($level) { |
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Debug::$loglevel = $level; |
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} |
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public static function get_loglevel() { |
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return Debug::$loglevel; |
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} |
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public static function log($message, $level = 0) { |
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if (!Debug::$enabled || Debug::$loglevel < $level) { |
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return false; |
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} |
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$ts = strftime("%H:%M:%S", time()); |
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if (function_exists('posix_getpid')) { |
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$ts = "$ts/".posix_getpid(); |
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} |
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if (Debug::$logfile) { |
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$fp = fopen(Debug::$logfile, 'a+'); |
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if ($fp) { |
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$locked = false; |
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if (function_exists("flock")) { |
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$tries = 0; |
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// try to lock logfile for writing |
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while ($tries < 5 && !$locked = flock($fp, LOCK_EX | LOCK_NB)) { |
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sleep(1); |
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++$tries; |
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} |
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if (!$locked) { |
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fclose($fp); |
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user_error("Unable to lock debugging log file: ".Debug::$logfile, E_USER_WARNING); |
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return; |
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} |
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} |
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fputs($fp, "[$ts] $message\n"); |
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if (function_exists("flock")) { |
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flock($fp, LOCK_UN); |
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} |
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fclose($fp); |
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if (Debug::$quiet) { |
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return; |
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} |
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} else { |
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user_error("Unable to open debugging log file: ".Debug::$logfile, E_USER_WARNING); |
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} |
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} |
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print "[$ts] $message\n"; |
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} |
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} |