bookordersystem array manipulation

gistfile1.txt

									
									//EXAMPLE CODE FROM MY BOOK PROJECT:
									

$data = array();

foreach ($entries->rows as $index=>$e) {
	if(array_key_exists('title', $e['value'])){
		// checking if the id of the book has already been met
		if ( isset($data[$e['id']]) ) { 
			$d = $data[$e['id']];
		}
		else{
			$d = array();
			$d["title"] = $e['value']['title'];
			$d["date"] = $e['value']['date'];
			$d["cover"] = $e['value']['cover'];
			$d["detail"] = $e['value']['detail'];
			$d["orderedOn"] = isset( $e['value']['orderedOn'] ) ? $e['value']['orderedOn'] : NULL;
			$d["bookId"] = $e['id'];
			$d["orders"] = array();
		} 
	}
	if ( array_key_exists('message', $e['value']) ) {	
		if ( $d["bookId"]  === $e['value']['book'] ) {
			array_push($d['orders'], array('user' => $e['value']['user'], 'message' => $e['value']['message']));
		}	
	}
	$data[$d['bookId']] = $d;
}

$array = $data;