Parse file and interpret php code in it without php tags

Question

I have a text file with the follow content:

This is a static content

{{ echo "Hello World" }}

The file is named test.txt

What I want is to parse this file using PHP and create a new file with the following content:

This is a static content

Hello World

As you can see the code inside the curly braces: {{}} needs to be executed before save to the target file. I don't know where to start to achieve my goal.

use a template engine which accepts plugins as well, i think this is what is needed in your qustion, instead of developing a template engine all over (except if you want to do that) — Nikos M.
– Nikos M., Commented May 27, 2015 at 16:42

Federkun · Accepted Answer · 2015-05-27 16:21:19Z

1

Something like

echo preg_replace_callback('/\{\{(.*?)\}\}/', function($match) {
    ob_start();
    eval($match[1] . ';');
    $out = ob_get_clean();

    return $out;
}, $string);

should do the job.

Demo: http://3v4l.org/nYT31

edited May 27, 2015 at 16:21

answered May 27, 2015 at 16:15

Federkun

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2 Comments

ntan Over a year ago

your solution is working perfectly, but do you know any other approach without eval (some hosting provider don't allow eval).

Federkun Over a year ago

Not if you want to execute php code, sorry. Maybe you want build a template parser like Smarty o Twig

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