Question

How to get the same result without /e eval – improved security and speed performance?

function finclude($file){
    return include($file);
}

$str = "Today is {include 'date.php'}.";
echo preg_replace("/\{include '(.*)\'}/e", 'finclude("$1")', $str);

date.php:

<?php return date('jS \of F'); ?>, 2011

Result: Today is 20th of July.

Answer 1

You can use preg_replace_callback

echo preg_replace_callback("/\{include '(.*)\'}/", function($m) {
  return include($m[1]);
}, $str);