Custom Exception

[terryds]

How to make a custom exception class ?

 

<?php

class MyPDOException extends Exception {

public function __construct($msg, $code=NULL) {

$err = $msg;

if (isset($code)) {

$err .= " Error code: " . $code;

}

return $err;

}

try {

throw new MyPDOException('aaaa');

}

catch (MyPDOException $e) {

echo $e->getMessage();

}

But, when the script is execute, it gives me a blank page, not 'aaaa' .... Can you tell me how to make custom exceptions so it can work properly?

[astralaaron]

it doesn't look like getMessage() is a method of your class.

 

maybe try

class MyPDOException extends Exception {private $err;public function __construct($msg, $code=NULL) {$this->err = $msg;if (isset($code)) {$this->err .= " Error code: " . $code;} public function getMessage() { return $this->err; }}

edit: nevermind, I just now saw that you are extending the Exception class

 

maybe this:

class MyPDOException extends Exception {public function __construct($msg, $code=NULL) {parent::err = $msg;if (isset($code)) {parent::err .= " Error code: " . $code;} public function getMessage() { return parent::getMessage();  }}

Edited October 13, 2013 by astralaaron

[Ingolme]

Just call the parent's constructor

class MyPDOException extends Exception {    public function __construct($msg, $code=NULL) {        parent::__construct($msg, $code);    }}

Here's the PHP manual's explanation: http://es1.php.net/manual/en/language.exceptions.extending.php

[terryds]

thank you so much, ingolme and astralaaron... you've helped me a lot

[terryds]

Umm... But, the code didn't work as what i want, it gives me 'aaaa' not as what i want :

 

<?php

class MyPDOException extends Exception {

public function __construct($msg, $code=0) {

parent::__construct($msg, $code);

}

public function __toString() {

return __CLASS__ . ": [{$this->code}]: {$this->message}";

}

}

try {

throw new MyPDOException('aaaa',2013);

}

catch (MyPDOException $e) {

echo $e->getMessage();

}

Can you tell me how to make it work so i can throw MyPDOException : [2013] : aaaa ?

[Ingolme]

echo $e; will call the toString method. If you call $e->getMessage() then you'll only get the message.