(PHP 5, PHP 7, PHP 8)
ArrayAccess::offsetGet — Offset to retrieve
Returns the value at specified offset.
This method is executed when checking if offset is empty().
offsetThe offset to retrieve.
Can return all value types.
Зауваження:
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] = 7or$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_NOTICEmessage is raised.