PHP7中异常与错误处理与之前版本对比

 1 ECHO PHP_VERSION.PHP_EOL;
 2 function add (int $left,int $right){
 3   return $left+$right;
 4  }
 5 try {
 6     echo add(‘left‘, ‘right‘);
 7 } catch (Exception $e) {
 8     // Handle exception
 9 } catch (Error $e) { // Clearly a different type of object
10     // Log error and end gracefully
11     var_dump($e->getMessage());
12 }
13 echo PHP_EOL."helloword".PHP_EOL;

1 5.6.27
2 
3 Catchable fatal error: Argument 1 passed to add() must be an instance of int, string given, called in D:\phpStudy\PHPTutorial\WWW\index.php on line 9 and defined in D:\phpStudy\PHPTutorial\WWW\index.php on line 3

1 7.0.12
2 string(127) "Argument 1 passed to add() must be of the type integer, string given, called in D:\phpStudy\PHPTutorial\WWW\index.php on line 9" 
3 helloword