PHP regex templating - find all occurrences of {{var}}

Question

I need some help with creating a regex for my php script. Basically, I have an associative array containing my data, and I want to use preg_replace to replace some place-ho

Answer 1

To not have to use global variables and gracefully handle missing keys you can use

function render($template, $vars) {
        return \preg_replace_callback("!{{\s*(?P[a-zA-Z0-9_-]+?)\s*}}!", function($match) use($vars){
            return isset($vars[$match["key"]]) ? $vars[$match["key"]] : $match[0];
        }, $template);
    }