note 118181 added to language.types.boolean

For those wondering why the string "0" is falsy, consider that a good deal of input data is actually string-typed, even when it is semantically numeral. PHP often tries to autoconvert these strings to numeral, as the programmer certainly intended (try 'echo "2"+3'). Consequently, PHP designers decided to treat 0 and "0" similarly, ie. falsy, for consistency and to avoid bugs where the programmer believes he got a true numeral that would happen to be truthy when zero. ---- Server IP: 72.52.91.14 Probable Submitter: 92.92.61.116 ---- Manual Page -- http://php.net/manual/en/language.types.boolean.php Edit -- https://master.php.net/note/edit/118181 Del: integrated -- https://master.php.net/note/delete/118181/integrated Del: useless -- https://master.php.net/note/delete/118181/useless Del: bad code -- https://master.php.net/note/delete/118181/bad+code Del: spam -- https://master.php.net/note/delete/118181/spam Del: non-english -- https://master.php.net/note/delete/118181/non-english Del: in docs -- https://master.php.net/note/delete/118181/in+docs Del: other reasons-- https://master.php.net/note/delete/118181 Reject -- https://master.php.net/note/reject/118181 Search -- https://master.php.net/manage/user-notes.php