note: very novice programmer, i will do my best to explain.

i have been trying to make a html/php page that has a textbox. i’m looking for multiple solutions (either in php, java, jquery, script etc) how to import import external code into the front page.

so, on my “admin side” I type <?php include 'text1.php'; ?> in the textbox. hit save. i go back to the frontpage, reload. And I unfortunately see: <?php include 'text1.php'; ?> as plain html text instead of loading/rendering text1.php into the frontpage.

What do I need to do or change for it to render/load text1.php as real html? (solution doesn’t necessarily need to be just PHP)

see img as example:

enter image description here