Access function in class php

I have a class like:

class bla_bla extends WP_Widget {

  function boo(){
    return 'something';
  }

  ...
}

(it's a WordPress widget)

How can I access the boo() function from outside the class? I want to assign the value returned by that function to a variable, like $var = boo();

asked Nov 18, 2010 at 15:13

1

You can either access it directly or by instantiating the class:

$blah = new bla_bla();
$var = $blah->boo();

or

$var = bla_bla::boo();

answered Nov 18, 2010 at 15:17

RDLRDL

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0

You must have an instance of that class to call it, for example:

$widget = new bla_bla();
$var = $widget->boo();

Otherwise, you can add the "static" keyword to the boo() function, and you could call it like $var = WP_Widget::boo(); but this changes the semantics and could break code.

answered Nov 18, 2010 at 15:16

PalantirPalantir

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0

First you need an instance of the class. Then you call the method (if it's public). You should read some OOP tutorials as this is really basic stuff. See Object Oriented PHP for Beginners.

$bla = new bla_bla();
$var = $bla->boo();

answered Nov 18, 2010 at 15:16

AlexVAlexV

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Short writing style:

$bla = (new bla_bla)->boo();

answered Jul 9, 2020 at 6:57

$bla = new bla_bla();
$var = $bla->boo();

answered Nov 18, 2010 at 15:15

enobrevenobrev

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1

$bla = new bla_bla(); $newbla = $bla->boo();

answered Jun 2 at 22:12

1

PHP - Access Modifiers

Properties and methods can have access modifiers which control where they can be accessed.

There are three access modifiers:

• public - the property or method can be accessed from everywhere. This is default
• protected - the property or method can be accessed within the class and by classes derived from that class
• private - the property or method can ONLY be accessed within the class

In the following example we have added three different access modifiers to three properties (name, color, and weight). Here, if you try to set the name property it will work fine (because the name property is public, and can be accessed from everywhere). However, if you try to set the color or weight property it will result in a fatal error (because the color and weight property are protected and private):

Example

class Fruit {
  public $name;
  protected $color;
  private $weight;
}

$mango = new Fruit();
$mango->name = 'Mango'; // OK
$mango->color = 'Yellow'; // ERROR
$mango->weight = '300'; // ERROR
?>

In the next example we have added access modifiers to two functions. Here, if you try to call the set_color() or the set_weight() function it will result in a fatal error (because the two functions are considered protected and private), even if all the properties are public:

Example

class Fruit {
  public $name;
  public $color;
  public $weight;

  function set_name($n) {  // a public function (default)
    $this->name = $n;
  }
  protected function set_color($n) { // a protected function
    $this->color = $n;
  }
  private function set_weight($n) { // a private function
    $this->weight = $n;
  }
}

$mango = new Fruit();
$mango->set_name('Mango'); // OK
$mango->set_color('Yellow'); // ERROR
$mango->set_weight('300'); // ERROR
?>

How can I access a function inside a class in PHP?

How can I access a method from another class in PHP?

Can you call a function within a class?

How can I access private function in PHP?