只是想知道这是否是一种常见的做法。基本上,构造函数正在调用一些引发失败的初始化函数。我的想法是,将异常重新抛出到创建对象的位置是有意义的,因为那是发送实际输出的位置。
这是这种情况的“最佳实践”吗?还是有更标准的方法来做到这一点?
<?php
class a {
private $x;
private $y;
function __construct($filename) {
try {
$this->x = $this->functionThatMightThrowException($filename);
$this->y = $this->doSomethingElseThatMightThrow();
}
catch(InvalidArgumentException $e) {
throw $e; //is this a good practice or not???
}
catch(Exception $e) {
throw $e; //again
}
}
//rest of class definition
}
// then somewhere else where the object is created and output is being sent
$fn = "blah.txt";
try {
$a = new a($fn);
}
catch (InvalidArgumentException $e) {
//actually handle here -- send error message back etc
}
catch (Exception $e) {
//etc
}
?>