PHP 5.1引入了错误异常 http://php.net/manual/en/class.errorexception.php。两个函数的构造函数不同
public __construct ([ string $message = "" [, int $code = 0 [, Exception $previous = NULL ]]] )
public __construct ([ string $message = "" [, int $code = 0 [, int $severity = 1 [, string $filename = __FILE__ [, int $lineno = __LINE__ [, Exception $previous = NULL ]]]]]] )
何时使用两者有区别吗?
我怀疑上面的用例是不正确的:
<?php
class Data {
public function save () {
try {
// do something
} catch (\PDOException $e) {
if ($e->getCode() == '23000') {
throw new Data_Exception('Foo Bar', $e);
}
throw $e
}
}
}
class Data_Exception extends ErrorException /* This should not be using ErrorException */ {}
没有很好的记录,但似乎ErrorException
被设计为从自定义错误处理程序中显式使用,如原始示例所示,http://php.net/manual/en/class.errorexception.php http://php.net/manual/en/class.errorexception.php.
function exception_error_handler($errno, $errstr, $errfile, $errline ) {
throw new ErrorException($errstr, $errno, 0, $errfile, $errline);
}
set_error_handler("exception_error_handler");