PHP Class Callback...

[alaincch]

I was trying to use external function as a callback function to validate a form before the default class function is run. Can anyone help?

Eg:
class myClass {
[INDENT]function c_validate() {[/INDENT]
[INDENT]}[/INDENT]
}

/ This function is optional /
function ext_validate() {
}

$myVal = new myClass();
$myVal->validate = ext_validate();
$myVal->c_validate();

It'll use back the class validation function if the external function doesnt exists.

[Weedpacket]

Pardon? What was the question again?

[Shrike]

I think you are trying to assign a function to a variable (I know this is something you can do with LUA, and I guess Ruby, but not with PHP). You could just check for the ext_validate() function from within myClass::c_validate.

class myClass {
function c_validate( $something ) {
    if( function_exists( 'ext_validate' ))
    {
      return ext_validate( $something );
    } 
    // Carry on here if ext_validate() doesn't exit
    return $something_validated;
  }
}
/* This function is optional */
function ext_validate( $something ) {
}
$myVal = new myClass();
$validated = $myVal->c_validate( $something );