Cleaner PIDFILE success check

- Use `if` instead of logic operators
- Check for `false` explicitly

Author: Arkadiy Kukarkin

bin/resque

@@ -130,10 +130,10 @@ if($count > 1) {
 
 					$PIDFILE = getenv('PIDFILE');
 					if ($PIDFILE) {
-						file_put_contents($PIDFILE, getmypid()) or (
-							$logger->log(Psr\Log\LogLevel::NOTICE, 'Could not write PID information to {pidfile}', array('pidfile' => $PIDFILE)) and
-							die(2)
-                                                    );
+						if(file_put_contents($PIDFILE, getmypid()) === false){
+							$logger->log(Psr\Log\LogLevel::NOTICE, 'Could not write PID information to {pidfile}', array('pidfile' => $PIDFILE));
+                                                        die(2);
+                                                }
 					}
 
 					$registered = TRUE;
@@ -175,10 +175,10 @@ else {
 
 	$PIDFILE = getenv('PIDFILE');
 	if ($PIDFILE) {
-		file_put_contents($PIDFILE, getmypid()) or (
-			$logger->log(Psr\Log\LogLevel::NOTICE, 'Could not write PID information to {pidfile}', array('pidfile' => $PIDFILE)) and
-			die(2)
-                    );
+		if(file_put_contents($PIDFILE, getmypid()) === false) {
+			$logger->log(Psr\Log\LogLevel::NOTICE, 'Could not write PID information to {pidfile}', array('pidfile' => $PIDFILE));
+                        die(2);
+                }
 	}
 
     $logger->log(Psr\Log\LogLevel::NOTICE, 'Starting worker {worker}', array('worker' => $worker));