PHP code in a chunk, similar to php include? PHP isn't processed, only fed into snippet

• Snippets and Plugins are intentionally not PHP for a reason. While RO.IDEs handles this, it does so for a very particular reason.
• This goes against the best practices instituted by years of MODX developer experience.
• Most desires to run other PHP code from a Snippet can be offset by the modx class method runSnippet(). This allows you to run a snippet from a snippet splitting your code like you want.
• Requires use of the php eval function. Research eval() and learn why it can be eval. Search "eval is evil".
• RO.IDEs uses eval (from another Snippet), but it makes sure all executable code is behind locked doors using Resource Groups. You can't place a Chunk in a Resource Group. You can only implement Element-wide security for Chunks.
• PHP in Chunks cannot have <?php or ?>. This makes them harder to recognize as PHP. If content editors are using your site, these Chunks will be much more likely to be edited, breaking your site entirely.
• Including and defining classes and functions is troublesome, requiring checking if the function/class was already included.

On all of our snippets, we use
#Error Reporting
ini_set("display_errors", 1);
error_reporting(E_ALL);

And when we go live with a project, we have to manually go through each snippet and remove/comment out those lines.

Key:   display_errors
Value:  1   // this should be 0 for production

$display_errors = $modx->getOption('display_errors',null,0);
if ($display_errors) {
    ini_set("display_errors", 1);
    error_reporting(E_ALL);
}