In PHP, array_key_first() gets the first key of an array
In PHP, array_key_first () gets the first key of an array however, it does not affect the internal array pointer. It was introduced in PHP 7.3.0.
New function of PHP v7.3 gc_status() for garbage collector
New function of PHP gc_status() fetch the data about garbage collector. However, Java doesn’t clearly specify memory and…