Added a convenient function to fetch arrays from $_POST array

qa-include/qa-base.php

@@ -973,6 +973,23 @@
 		return isset($_POST[$field]) ? preg_replace('/\r\n?/', "\n", trim(qa_gpc_to_string($_POST[$field]))) : null;
 	}
 
+	function qa_post_array($field)
+/*
+	Return an array for incoming POST field, or null if it's not defined.
+	While we're at it, trim() surrounding white space for each value and convert them to Unix line endings.
+*/
+	{
+		if (qa_to_override(__FUNCTION__)) { $args=func_get_args(); return qa_call_override(__FUNCTION__, $args); }
+
+		if (isset($_POST[$field])) {
+			$result = array();
+			foreach ($_POST[$field] as $key => $value)
+				$result[$key] = preg_replace('/\r\n?/', "\n", trim(qa_gpc_to_string($value)));
+			return $result;
+		}
+		return null;
+	}
+
 
 	function qa_clicked($name)
 /*