note 97966 deleted from language.variables.basics by danbrown

Note Submitter: anonymous at example dot com ---- I have not tested this snippet, but I doubt it is more efficient than using a temporary buffer through a third variable. To be simple and powerful, the PHP language provides you an high level of abstraction. In the low level of the PHP interpreter - into the practice -, this buffer is used since a third "block" of memory must be allocated to perform this permutation.