Function password_needs_rehash

Determine if the password hash needs to be rehashed according to the options provided

If the answer is true, after validating the password using password_verify, rehash it.

Parameters summary
`string`	`$hash`	The hash to test
`integer`	`$algo`	The algorithm used for new password hashes
`array`	`$options = array()`	The options array passed to password_hash

Return value summary
`boolean`	True if the password needs to be rehashed.