functions.php

<?php
if (isset($_POST['action'])){

	$db = new SQLite3('/var/lib/openrepeater/db/openrepeater.db');
	
	// Define processing arrays
	$relaysPostArray = array(); // Array of post arrays, stored to be combined in to nested array.
	$relaysNested = array(); // Array of nested relay settings.
	$moduleOptions = array(); //Final module options array that will be serialized and stored in database.
	
	// Process submitted post varialbes
	foreach($_POST as $key=>$value){  
		if ($key != "action") {
			if($key == "moduleKey"){
				$module_ID = $value;

			} else if(in_array($key, array("relayNum", "relayLabel", "relayGPIO"))){
				// Process through submitted relay sub arrays and store for later nesting
				$relaysPostArray[$key]=$value;
				
			} else {
				// Process non-array based variables normally and add to options array.
				$moduleOptions[$key]=$value;			
			}
		}
	}

	// Clear out all current Relay GPIO pins in gpio dababase table for rewrite of new pin data.
	$db->exec('DELETE FROM "gpio_pins" WHERE type = "RemoteRelay";');

	// Process saved post sub arrays into nested array and update gpio pins
	foreach($relaysPostArray['relayNum'] as $key=>$value){
		$relaysNested[$value] = array(
			'gpio' => $relaysPostArray['relayGPIO'][$key],
			'label' => $relaysPostArray['relayLabel'][$key]
			);
			
			// Update GPIO pins table with new pins.
			$sql = 'INSERT INTO "gpio_pins" ("gpio_num","direction","active","description","type") VALUES ("'.$relaysPostArray['relayGPIO'][$key].'","out","'.$moduleOptions['relays_gpio_active_state'].'","RELAY: '.$relaysPostArray['relayLabel'][$key].'","RemoteRelay");';
			$db->exec($sql);
	}
	$moduleOptions['relay'] = $relaysNested; // add nested relay array into options array.


	// Serialize settings array for DB storage
	$settings = serialize($moduleOptions);

	// Update Database
	$sql = "UPDATE modules SET moduleOptions = '$settings' WHERE moduleKey = '$module_ID';";
	$db->exec($sql);
	$db->close();


	/* SET FLAG TO LET REPEATER PROGRAM KNOW TO RELOAD SETTINGS */
	$memcache_obj = new Memcache;
	$memcache_obj->connect('localhost', 11211);
	$memcache_obj->set('update_settings_flag', 1, false, 0);

	// Go Back to Module Settings Page
	header('location: ../../modules.php?settings='.$module_ID);		
}
?>