note 12457 deleted from language.operators.logical by colder

Note Submitter: yohgaki at hotmail dot com ---- In PHP4, "and", "or", "&&", "||" -- all are "short circuit" like in C/C++. In PHP3, I think it was not. "Short circuit" means language stops evaluation of expression when conditions are determined. (Most language uses short circuit evaluation for logical condition) For example, $a = true; $b = false; if ( $a || $b ) { } This "if" statement only evaluate $a, since $a is true and whole condition must be true. (i.e. if $b is a function instead of value, the function will not be called)