CODEWITHSUNDEEP
phpoopclass
Tim N.
Tim N.

Reputation: 291

PHP: call dynamic function, but in a class?

I am trying to create an initialisation function that will call multiple functions in the class, a quick example of the end result is this:

$foo = new bar;
$foo->call('funca, do_taxes, initb');

This will work fine normally with call_user_func function, but what I really want to do is do that inside the class, I haven't a clue how to do this, a quick example of my unworking code is as follows:

class bar {
   public function call($funcs) {
       $funcarray = explode(', ', $funcs);
       foreach($funcarray as $func) {
          call_user_func("$this->$func"); //???
       }
   }
   private function do_taxes() {
       //...
   }
}

How would I call a dynamic class function?

Upvotes: 4

Views: 4838

Answers (4)

Stephen
Stephen

Reputation: 3465

when we want to check whether a class function/method exists within the class,

then this could help

inside class...

 $class_func = "foo";

 if(method_exists($this , $class_func ) ){
    $this->$class_func();
  }

 public function foo(){
   echo " i am called ";
 }

Upvotes: 0

jon_darkstar
jon_darkstar

Reputation: 16768

All you need to do is

$this->$func();

EDIT - disregard last post, i was a little hasty and misunderstood

You can do something similar in place of call_user_func either for native or user functions

function arf($a) {print("arf $a arf");}

$x = 'strlen';
$f2 = 'arf';

print($x('four')."\n");
$f2($arg1);

OUT

4
arf  arf

Upvotes: 0

Amber
Amber

Reputation: 526573

It's actually a lot simpler than you think, since PHP allows things like variable variables (and also variable object member names):

foreach($funcarray as $func) {
    $this->$func();
}

Upvotes: 5

Mark Elliot
Mark Elliot

Reputation: 77034

You need to use an array, like Example #4 in the manual:

call_user_func(array($this, $func));

Upvotes: 7

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