note 114866 added to language.operators.logical

To assign default value in variable assignation, the simpliest solution to me is: <?php $v = my_function() or $v = "default"; ?> It works because, first, $v is assigned the return value from my_function(), then this value is evaluated as a part of a logical operation: * if the left side is false, null, 0, or an empty string, the right side must be evaluated and, again, because 'or' has low precedence, $v is assigned the string "default" * if the left side is none of the previously mentioned values, the logical operation ends and $v keeps the return value from my_function() This is almost the same as the solution from [phpnet at zc dot webhop dot net], except that his solution (parenthesis and double pipe) doesn't take advantage of the "or" low precedence. NOTE: "" (the empty string) is evaluated as a FALSE logical operand, so make sure that the empty string is not an acceptable value from my_function(). If you need to consider the empty string as an acceptable return value, you must go the classical "if" way. ---- Server IP: 72.52.91.14 Probable Submitter: 82.242.139.60 ---- Manual Page -- http://php.net/manual/en/language.operators.logical.php Edit -- https://master.php.net/note/edit/114866 Del: integrated -- https://master.php.net/note/delete/114866/integrated Del: useless -- https://master.php.net/note/delete/114866/useless Del: bad code -- https://master.php.net/note/delete/114866/bad+code Del: spam -- https://master.php.net/note/delete/114866/spam Del: non-english -- https://master.php.net/note/delete/114866/non-english Del: in docs -- https://master.php.net/note/delete/114866/in+docs Del: other reasons-- https://master.php.net/note/delete/114866 Reject -- https://master.php.net/note/reject/114866 Search -- https://master.php.net/manage/user-notes.php