查看文件: test3.php

大小: 1.41 KB

类型: application/octet-stream

<?php
	//include connection file 
	include_once("./db_connect.php");

$data =array();
	
	$sql = "SELECT * FROM `treeview_items` ";
	$res = mysqli_query($conn, $sql) or die("database error:". mysqli_error($conn));
		//iterate on results row and create new index array of data
		while( $row = mysqli_fetch_assoc($res) ) { 
			$tmp = array();
			$tmp['id'] = $row['id'];
			$tmp['name'] = $row['name'];
			$tmp['text'] = $row['text'];
			$tmp['parent_id'] = $row['parent_id'];
			$tmp['href'] = 'http://google.com';
			array_push($data, $tmp); 
		}
		$itemsByReference = array();

// Build array of item references:
	foreach($data as $key => &$item) {
	   $itemsByReference[$item['id']] = &$item;
	   // Children array:
	   $itemsByReference[$item['id']]['nodes'] = array();
	}

// Set items as children of the relevant parent item.
	foreach($data as $key => &$item)  {
	//echo "<pre>";print_r($itemsByReference[$item['parent_id']]);die;
	   if($item['parent_id'] && isset($itemsByReference[$item['parent_id']])) {
	      $itemsByReference [$item['parent_id']]['nodes'][] = &$item;
		}
	}
	// Remove items that were added to parents elsewhere:
	foreach($data as $key => &$item) {
		 if(empty($item['nodes'])) {
			unset($item['nodes']);
			}
	   if($item['parent_id'] && isset($itemsByReference[$item['parent_id']])) {
	      unset($data[$key]);
		 }
	}

// Encode:
	echo json_encode($data);
	?>