note 85790 added to function.eval

Finally, a good use for eval :)! If you want to be able to check for syntax errors WITHOUT executing the code, add "return true;" before all the code. All execution of the code stops after that mark, and makes eval returns true on no syntax errors, and false on syntax errors. This is especially useful for anyone making a template system. Here's a working example: <?php function check_syntax($code) { return @eval('return true;' . $code); } print "<b>No Code execution:</b><br />\n"; $code = "print \"<b><i>hello! you don't want me...</i></b><br />\n\";"; var_dump(check_syntax($code)); // Good syntax print "<br />\n"; var_dump(check_syntax($code . ' ==')); // Bad syntax print "<br />\n"; print "<b>Code Executed...Bad</b>:<br />\n"; var_dump(eval($code) === null); // Good syntax print "<br />\n"; var_dump(@eval($code . ' ==') === null); // Bad syntax ?> ---- Server IP: 209.41.74.194 Probable Submitter: 74.93.181.202 ---- Manual Page -- http://www.php.net/manual/en/function.eval.php Edit -- https://master.php.net/note/edit/85790 Del: integrated -- https://master.php.net/note/delete/85790/integrated Del: useless -- https://master.php.net/note/delete/85790/useless Del: bad code -- https://master.php.net/note/delete/85790/bad+code Del: spam -- https://master.php.net/note/delete/85790/spam Del: non-english -- https://master.php.net/note/delete/85790/non-english Del: in docs -- https://master.php.net/note/delete/85790/in+docs Del: other reasons-- https://master.php.net/note/delete/85790 Reject -- https://master.php.net/note/reject/85790 Search -- https://master.php.net/manage/user-notes.php