PHP OOP beginner - what is $this->object->method() or anything with 2 arrow -> -


usually understand $this->method() or $this->property or $object->method() or $object->property

but see $this->$object->method(). or has 2 arrow ..->.. -> ..

what mean?

this means $object variable holds field name.

example:

class foo  {     public $bar = 'some string'; }  $foo = new foo(); $field = 'bar'; echo $foo->$field; // prints 'some string'

then, if method() called on field, means field object.


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