在字符串中执行PHP代码[重复]

Question

This question already has an answer here:

• PHP eval issue with PHP + HTML code 5 answers

I have my page contents saved in a database and would like to execute any php code in the string. So if my string was:

<h1>Welcome</h1><?php echo $motto?><br/>

I only want to execute echo $motto. Using eval() will try to execute <h1>Welcome</h1>.

Any way to do this?

</div>

Answer 1

Needless to say you should find another solution ASAP. In the meantime you can eval the code like this:

$str = '<h1>Welcome</h1><?php echo $motto?><br/>'; // Your DB content

eval("?> $str <?php ");

Demo: http://codepad.org/ao2PPHN7

I can't stress that enough: eval is dangerous, and application code shouldn't be in the database. Try a template parser like Smarty, Dwoo, or my favorite: Twig.