Add a lot of new fields with improved and more integrated checks for

dependencies and allowed values

functions/functions.php

@@ -157,3 +157,64 @@ function generateHelpTooltip(string $identifier, string $title, string $explica,
     return [$output, $outputTag];
 
 }
+
+/**
+ * Outputs a DOMDocument with correct header and then aborts.
+ * Used mainly for debugging.
+ *
+ * @param DOMDocument $xmlDoc XML object.
+ *
+ * @return void
+ */
+function printDOMDocToXML(DOMDocument $xmlDoc) {
+
+    return '<?xml version="1.0" encoding="UTF-8"?>' . $xmlDoc->saveXML($xmlDoc->documentElement);
+    
+}
+
+/**
+ * Function for creating a DOMElement with a text node inside.
+ *
+ * @param DOMDocument $xmlDoc  XML document.
+ * @param string      $tag     Tag.
+ * @param string      $content Text content.
+ *
+ * @return DOMElement
+ */
+function createTextDomElement(DOMDocument $xmlDoc, string $tag, string $content):DOMElement {
+
+    $element = $xmlDoc->createElement($tag);
+    $element->appendChild($xmlDoc->createTextNode($content));
+
+    return $element;
+
+}
+
+/**
+ * Function for creating a DOMDocument record channel.
+ *
+ * @return array
+ */
+function getBlankRecordChannel():array {
+
+    $xmlDoc = new DOMDocument("1.0", "UTF-8");
+    $xmlMainElem = $xmlDoc->createElement("record");
+    $record_node = $xmlDoc->appendChild($xmlMainElem); //add RSS element to XML node
+
+    return [$xmlDoc, $record_node];
+
+}
+
+function rrmdir($dir) {
+    if (is_dir($dir)) {
+        $objects = scandir($dir);
+        foreach ($objects as $object) {
+            if ($object != "." && $object != "..") {
+                if (filetype($dir . "/" . $object) == "dir") rrmdir($dir . "/" . $object); else unlink($dir . "/" . $object);
+            }
+        }
+        reset($objects);
+        rmdir($dir);
+    }
+
+}