PHP: How to use dynamic variable name with a class' setter

Question

I have a class with a private member "description" but that proposes a setter :

class Foo {
  private $description;

  public function setDescription($description) { 
    $this->description = $description; 
  }
}

I have the name of the member in a variable. I would like to access the field dynamically. If the field was simply public I could do :

$bar = "description";
$f = new Foo();
$f->$bar = "asdf";

but I don't know how to do in the case I have only a setter.

Look into Reflection ;) php.net/manual/en/reflectionproperty.setvalue.php - edit, actually could you not use $f->{$bar} = "asdf";? — Gavin
– Gavin, Commented Jul 23, 2012 at 12:42

Jerzy Zawadzki · Accepted Answer · 2012-07-23 12:42:15Z

11

<?php
$bar = "description";
$f = new Foo();
$func="set"+ucwords($bar);
$f->$func("asdf");
?>

answered Jul 23, 2012 at 12:42

Jerzy Zawadzki

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1 Comment

Barth Over a year ago

Thank you very much. It was actually straightforward but I didn't dare do that (I am used to C++) :)

Jeff Lambert · Accepted Answer · 2012-07-23 12:44:11Z

4

Try this:

$bar = 'description';
$f = new Foo();
$f->{'set'.ucwords($bar)}('test');

answered Jul 23, 2012 at 12:44

Jeff Lambert

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Comments

famas23 · Accepted Answer · 2018-11-06 03:08:14Z

1

This function come do the job:

  private function bindEntityValues(Product $entity, array $data) {
      foreach ($data as $key => $value){
        $funcName = 'set'+ucwords($key);
        if(method_exists($entity, $funcName)) $entity->$funcName($value);
      }
    }

answered Nov 6, 2018 at 3:08

famas23

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Comments

Rupesh Patel · Accepted Answer · 2012-07-23 12:43:20Z

0

Use magic setter

class Foo {
  private $description;

  function __set($name,$value)
  {
    $this->$name = $value;
  }  
/*public function setDescription($description) { 
    $this->description = $description; 
  }*/
}

but by this way your all private properties will act as public ones if you want it for just description use this

class Foo {
      private $description;

      function __set($name,$value)
      {
        if($name == 'description')
        { $this->$name = $value;
          return true;
         }
         else 
        return false
      }  
    /*public function setDescription($description) { 
        $this->description = $description; 
      }*/
    }

answered Jul 23, 2012 at 12:43

Rupesh Patel

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2 Comments

Barth Over a year ago

Ok, but why not put them public then ? sorry it might be a newbie question.

Rupesh Patel Over a year ago

@Barth not so fancy as you think :)

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