This is the JS that you will add to a stack if you want to require
a specific PHP version number. The highest version wins.
This should be added as a *pageBodyAbove* scoped HTML template.

Supported Extensions:

* gd
* imagick
* gmagick
* vips
* curl
* intl
* iconv
* mbstring
* memcached
* apc
* exif

<!-- %%[[if preview]]%% -->
<script>
if ("undefined" == typeof window.phprequire) window.phprequire = [];
window.phprequire.push("7.4.0");

if ("undefined" == typeof window.phpmodules) window.phpmodules = [];
window.phpmodules.push("mbstring");

if ("undefined" == typeof window.phpstacks) window.phpstacks = [];
window.phpstacks.push("Agent");
</script>
<!-- %%[[endif]]%% -->