Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
Hi im learning LISP and well, all day i program php for a living, so i was messing around with php.net and found the eval function… so i started playing around!
I would love to know more about how to use eval to do crazy stuff, i know you can make functions with this and everything… but i wanted to ask why the next code wont work:
$var = 'echo \'FOZZ\';'; for($i = 0; $i < 100; $i++) $var = 'eval(\''.$var.'\');'; print $var; eval($var); Also what other stuff is interesting with eval!
Your statement comes out to ‘eval(‘eval(‘echo’FOZZ’;’);’)’. Your double quotes are interfering with each other and causing the error.
You might want to try changin the first line to $var = ‘echo \’FOZZ\’;’;
Note: Please be careful using eval.