How can I call following Class method or function?
Let say I have this params get from url:
$var = filter($_GET['params']);
Class:
class Functions{
public function filter($data){
$data = trim(htmlentities(strip_tags($data)));
if(get_magic_quotes_gpc())
$data = stripslashes($data);
$data = mysql_real_escape_string($data);
return $data;
}
}
thanks.
To answer your question, the current method would be to create the object then call the method:
$functions = new Functions();
$var = $functions->filter($_GET['params']);
Another way would be to make the method static since the class has no private data to rely on:
public static function filter($data){
This can then be called like so:
$var = Functions::filter($_GET['params']);
Lastly, you do not need a class and can just have a file of functions which you include. So you remove the class Functions and the public in the method. This can then be called like you tried:
$var = filter($_GET['params']);
Within the class you can call function by using :
$this->filter();
Outside of the class
you have to create an object of a class
ex: $obj = new Functions();
$obj->filter($param);
for more about OOPs in php
this example:
class test {
public function newTest(){
$this->bigTest();// we don't need to create an object we can call simply using $this
$this->smallTest();
}
private function bigTest(){
//Big Test Here
}
private function smallTest(){
//Small Test Here
}
public function scoreTest(){
//Scoring code here;
}
}
$testObject = new test();
$testObject->newTest();
$testObject->scoreTest();
hope it will help!
Create object for the class and call, if you want to call it from other pages.
$obj = new Functions();
$var = $obj->filter($_GET['params']);
Or inside the same class instances [ methods ], try this.
$var = $this->filter($_GET['params']);
$this must be within the object, not within the page.
$this must be within instance methods of the object, not just anywhere in the object (i.e. not statics and not outside of a method body)private $property = $this->getPropertyValue() declaration at the top of their class and wonder why it doesn't work :). In any case - I really just felt like pointing out something even smaller than you pointed out...for fun.$f = new Functions;
$var = $f->filter($_GET['params']);
Have a look at the PHP manual section on Object Oriented programming
As th function is not using $this at all, you can add a static keyword just after public and then call
Functions::filter($_GET['params']);
Avoiding the creation of an object just for one method call
You need to create Object for the class.
$obj = new Functions();
$var = $obj->filter($_GET['params']);
This way:
$instance = new Functions(); // create an instance (object) of functions class
$instance->filter($data); // now call it
Functions::filter()is code that you intend to use, please be aware that the php mysql_* extension has been deprecated. Use mysqli_* or pdo_* and strongly consider using prepared statements (which will remove the need for your function anyway).