ArrayAccess::offsetExists
ArrayAccess::offsetSet
ArrayAccess
PHP Manual

# ArrayAccess::offsetGet

(PHP 5 >= 5.0.0)

ArrayAccess::offsetGet — Offset to retrieve

### Description

abstract public mixed ArrayAccess::offsetGet ( mixed `$offset` )

Returns the value at specified offset.

This method is executed when checking if offset is empty().

### Parameters

`offset`

  The offset to retrieve.

### Notes

> Note:

> Starting with PHP 5.3.4, the prototype checks were relaxed and it's possible for implementations of this method to return by reference. This makes indirect modifications to the overloaded array dimensions of ArrayAccess objects possible.

> A direct modification is one that replaces completely the value of the array dimension, as in $obj[6] = 7. An indirect modification, on the other hand, only changes part of the dimension, or attempts to assign the dimension by reference to another variable, as in $obj[6][7] = 7 or $var =& $obj[6]. Increments with ++ and decrements with -- are also implemented in a way that requires indirect modification.

> While direct modification triggers a call to ArrayAccess::offsetSet(), indirect modification triggers a call to ArrayAccess::offsetGet(). In that case, the implementation of ArrayAccess::offsetGet() must be able to return by reference, otherwise an `E_NOTICE` message is raised.

### Return Values

Can return all value types.

### See Also

- ArrayAccess::offsetExists() - Whether an offset exists

ArrayAccess::offsetExists
ArrayAccess::offsetSet
ArrayAccess
PHP Manual