Mostly because PHP is implemented very poorly. Its used to be really slow (its a little bit better now with newer versions) and it always amazed me, because of its basically a thin wrapper on C.
I guess PHPs core types are very inefficient and the team behind PHP lacks time to really do a rewrite. A prime example is the PHP "array". Its not a list, its not an array, but more of a weird object thing. PHP is full of these weird things that are probably hard to optimize (in the PHP runtime)
I guess PHPs core types are very inefficient and the team behind PHP lacks time to really do a rewrite. A prime example is the PHP "array". Its not a list, its not an array, but more of a weird object thing. PHP is full of these weird things that are probably hard to optimize (in the PHP runtime)