migrateContent to JSON for importing to another site

migrateContent.php

<?php
$parents = explode(',',$modx->getOption('parents',$scriptProperties,'11,10,12,13,14'));
$parents = array_unique($parents);
$output = array();

foreach ($parents as $parent) {

    $childrenOutput = array();
    $children = $modx->getCollection('modResource', array('parent'=>$parent));
    
    foreach ($children as $child) {
        
        $tvOutput = array();
        $tvs = $child->getTemplateVars();
        
        foreach ($tvs as $tv){
             $tvOutput[] = $tv->toArray();
        }
        
        $childrenOutput[$child->get('id')] = array(
            'pagetitle'=>$child->get('pagetitle'),
            'longtitle'=>$child->get('longtitle'),
            'content'=>$child->get('content'),
            'description'=>$child->get('description'),
            'tvs' => $tvOutput
        );
    }
    
    $output[$parent] = $childrenOutput;
}

return json_encode($output);

Throw this in a snippet and add the snippet to a resource and call up the resource in the frontend to generate your json