Conditional Object Creation.

[Anonymous]

Hi,
Would like to know if some thing like this is possible

<?php
    class MyClass
    {
        function __construct($needed_parameter)
        {
            if ($this->isValid($needed_parameter)) {
                //object should not be created.
            }
            else {
                //object creation is successfull
            }
        }
        
        private function isValid($parameter)
        {
            if ($parameter == 'some valid condition') {
                return true;
            }
            else {
                return false;
            }
        }
        
        public function callMe()
        {
            return 'object has been created';
        }
    }

//case 1 :
    $obj_valid = new MyClass('some valid condition');
    $obj_valid->callMe();

//case 2 :
    $obj_invalid = new MyClass('some Invalid condition');
    $obj_invalid->callMe();

?>

What I need is if the user tries to create the object with a Invalid parameter, the object should not be
created. So when user tries to call a member function PHP throws a error.

Any help would be much appriciated.

Thanks
Varma

 

[Anonymous]

imo - with basic knowledge about the PHP classes - it isn't. If it is I expect someone will correct me

I suggest that if the parameters are not valid, you throw an exception yourself...

Coditor

 

[Anonymous]

imo - with basic knowledge about the PHP classes - it isn't. If it is I expect someone will correct me

I suggest that if the parameters are not valid, you throw an exception yourself...

Coditor

Yea, 've used exception to do the job. No idea if there is any other way

Thanks for the suggestion

Varma