php?抛异常

[伟洪winni]

php如何自定义异常类,捕获异常和抛出异常.
或者给个例子参考下

[果酱很好吃]

set_exception_handler('myException');
test(-1);
function test($a){
	if($a < 0){
		throw new Exception('error');
	}
	return $a;
}
function myException($e){
	$msg='code : '.$e->getCode().'<br>message : '.$e->getMessage();
	echo $msg;
}

[backnet]

try {  
    throw new Exception($error);  
} catch (Exception $e) {  
    echo $e->getMessage();  
}

[云天河V]

try{ throw new Exception($error); }catch(Exception $e){ echo $e->getCode(); }

[码无边]

http://www.php.net/manual/zh/language.exceptions.php

function inverse($x) {
    if (!$x) {
        throw new Exception('Division by zero.');
    }
    return 1/$x;
}

try {
    echo inverse(5) . "\n";
    echo inverse(0) . "\n";
} catch (Exception $e) {
    echo 'Caught exception: ',  $e->getMessage(), "\n";
}

// Continue execution
echo "Hello World\n";

以上例程会输出：

0.2
Caught exception: Division by zero.
Hello World

[傲雪星枫]

自定义一个异常类

<?php

class MyException extends Exception { }

class Test {
    public function testing() {
        try {
            try {
                throw new MyException('foo!');
            } catch (MyException $e) {
                // rethrow it
                throw $e;
            }
        } catch (Exception $e) {
            var_dump($e->getMessage());
        }
    }
}

$foo = new Test;
$foo->testing();

?>

[shangqiuzuidong]

try {

throw new Exception($error);

} catch (Exception $e) {

echo $e->getMessage();

}

[__小帅]

楼上都是正解