PHP object like array

Question

I need to be able to set my object like this:

$obj->foo = \'bar\';

then I need to use it as an array like that:

if($obj[\'f         


        

Answer 1

Just add implements ArrayAccess to your class and add the required methods:

• public function offsetExists($offset)
• public function offsetGet($offset)
• public function offsetSet($offset, $value)
• public function offsetUnset($offset)

See http://php.net/manual/en/class.arrayaccess.php

Answer 2

ArrayObject implements the ArrayAccess interface (and some more). Using the ARRAY_AS_PROPS flag it provides the functionality you're looking for.

$obj = new ArrayObject(array(), ArrayObject::ARRAY_AS_PROPS);
$obj->foo = 'bar';
echo $obj['foo'];

Alternatively you can implement the ArrayAccess interface in one of your own classes:

class Foo implements ArrayAccess {
  public function offsetExists($offset) {
    return isset($this->$offset);
  }

  public function offsetGet($offset) {
    return $this->$offset;
  }

  public function offsetSet($offset , $value) {
    $this->$offset = $value;
  }

  public function offsetUnset($offset) {
    unset($this->$offset);
  }
}

$obj = new Foo;
$obj->foo = 'bar';
echo $obj['foo'];

Answer 3

You could also cast the object as an array:

if((array)$obj['foo'] == 'bar'){
  //more code here
}