(PHP 5 >= 5.1.0, PHP 7) Gets the iterator classname for the ArrayObject.
(PHP 5 >= 5.3.0, PHP 7) Serialize an ArrayObject
(PHP 5 >= 5.1.0, PHP 7) Gets the behavior flags.
(PHP 5 >= 5.2.0, PHP 7) Sort the entries with a user-defined comparison function and maintain key association
(PHP 5 >= 5.0.0, PHP 7) Returns the value at the specified index
(PHP 5 >= 5.0.0, PHP 7) Appends the value
(PHP 5 >= 5.2.0, PHP 7) Sort entries using a "natural order" algorithm
(PHP 5 >= 5.2.0, PHP 7) Sort the entries by value
(PHP 5 >= 5.1.0, PHP 7) Exchange the array for another one.
(PHP 5 >= 5.0.0, PHP 7) Sets the value at the specified index to newval
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