note 38139 added to language.operators.comparison

note: the behavior below is documented in the appendix K about type comparisons, but since it is somewhat buried i thought i should raise it here for people since it threw me for a loop until i figured it out completely. just to clarify a tricky point about the == comparison operator when dealing with strings and numbers: ('some string' == 0) returns TRUE however, ('123' == 0) returns FALSE also note that ((int) 'some string') returns 0 and ((int) '123') returns 123 the behavior makes senes but you must be careful when comparing strings to numbers, e.g. when you're comparing a request variable which you expect to be numeric. its easy to fall into the trap of: if ($_GET['myvar']==0) dosomething(); as this will dosomething() even when $_GET['myvar'] is 'some string' and clearly not the value 0 i was getting lazy with my types since php vars are so flexible, so be warned to pay attention to the details... ---- Manual Page -- http://www.php.net/manual/en/language.operators.comparison.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+38139 Delete -- http://master.php.net/manage/user-notes.php?action=delete+38139&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+38139&report=yes Search -- http://master.php.net/manage/user-notes.php