Home Backend Development PHP Tutorial ajax商品筛选功能怎么进行判断

ajax商品筛选功能怎么进行判断

Jun 13, 2016 pm 12:01 PM
nbsp where

ajax商品筛选功能如何进行判断

本帖最后由 q5975166 于 2014-07-07 19:49:42 编辑 我把筛选商品的各个选项以json的形式存入数据库的一个字段(cp_leibie)
比如我存了3条
他们的选项就是
{"208":["209"],"5":["182"],"6":["30"],"27":["36"],"28":["34"]}  假如该条数据id为1
{"92":["201","202","204"],"93":["137","138","139"],"94":["143","144"]}假如该条数据id为2
{"208":["209"],"5":["182"],"6":["29"],"27":["35"],"28":["33"]}假如该条数据id为3
取出的时候以数组遍历
-----------------------------------------------------------------
比如商品中其中一个选项是   (适用环境: 全部  办公室  现代  欧式 )
那么$peistr是“适用环境”的id,$liestr是后面的子选项的id,
具体怎么接收的就不贴出来了,
下面for循环里为什么减二也不用考虑了。
下面是ajax提交过去的查询语句:
$strpei="select `id`,`name`,`huiyuanjia`,`cpimg`,`shichangjia`,cp_leibie  from  `".$db_prefix."chanpin` where `ifxianshi`=1 and `cpfl`='".$sid."' ";<br />		$dqcp = $Db->FetchAll($strpei);//这是执行sql语句的方法<br />		$strpei.="and id in(";<br />		$strpei2="";<br />		foreach($dqcp as $dkey=>$dvalue){//遍历所有商品<br />			$darr=json_decode(urldecode($dvalue['cp_leibie']),true);//把json数据进行解码<br />				for($i=0;$i<count($peistr)-2;$i++){//把接收到的商品选项的id循环出来<br />					foreach($darr[$peistr[$i]] as $dddkey=>$dddvalue){//把解码后的数据进行遍历,键名是接收到的商品选项的id<br />						if($liestr[$i]==$dddvalue){//子选项的id和json数据里的值一致的话,就把该条数据的id加到条件里<br />							$strpei2.=$dvalue['id'].",";<br />						}<br />					}<br />				}<br />		}<br />		<br />		$strpei.=$strpei2.")";
Copy after login

符合条件的就把对应的商品的id写到条件的in语法里。
假如点击了209的子项,那么id为1和3的id就会加入条件里
问题是接收第一次没问题,当接收第二次的时点击201,应该没有符合条件的数据,但是3个ID的数据他都显示了出来。
应该是循环里的if判断没有写对,不知条件该如何写。或者在其他地方入手能解决
------解决方案--------------------
我把判断改了一下
if($liestr[$i]==$dddvalue){<br /> $strpei2.=$dvalue['id'].",";<br />} 
Copy after login


<br />$where.="$liestr[$i]==$dddvalue &&";<br />	if($i==(count($peistr)-2)){<br />		$where= substr($where,0,-2);<br />	}<br />	if($where){<br />		$strpei2.=$dvalue['id'].",";<br />	}<br />
Copy after login

但是这样的话,$where他是一个字符串来放到if里判断的。不能进行判断处理  无论是什么$where都是1。这只是一个思路,你看看吧
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Solution: Your organization requires you to change your PIN Solution: Your organization requires you to change your PIN Oct 04, 2023 pm 05:45 PM

The message "Your organization has asked you to change your PIN" will appear on the login screen. This happens when the PIN expiration limit is reached on a computer using organization-based account settings, where they have control over personal devices. However, if you set up Windows using a personal account, the error message should ideally not appear. Although this is not always the case. Most users who encounter errors report using their personal accounts. Why does my organization ask me to change my PIN on Windows 11? It's possible that your account is associated with an organization, and your primary approach should be to verify this. Contacting your domain administrator can help! Additionally, misconfigured local policy settings or incorrect registry keys can cause errors. Right now

How to adjust window border settings on Windows 11: Change color and size How to adjust window border settings on Windows 11: Change color and size Sep 22, 2023 am 11:37 AM

Windows 11 brings fresh and elegant design to the forefront; the modern interface allows you to personalize and change the finest details, such as window borders. In this guide, we'll discuss step-by-step instructions to help you create an environment that reflects your style in the Windows operating system. How to change window border settings? Press + to open the Settings app. WindowsI go to Personalization and click Color Settings. Color Change Window Borders Settings Window 11" Width="643" Height="500" > Find the Show accent color on title bar and window borders option, and toggle the switch next to it. To display accent colors on the Start menu and taskbar To display the theme color on the Start menu and taskbar, turn on Show theme on the Start menu and taskbar

How to change title bar color on Windows 11? How to change title bar color on Windows 11? Sep 14, 2023 pm 03:33 PM

By default, the title bar color on Windows 11 depends on the dark/light theme you choose. However, you can change it to any color you want. In this guide, we'll discuss step-by-step instructions for three ways to change it and personalize your desktop experience to make it visually appealing. Is it possible to change the title bar color of active and inactive windows? Yes, you can change the title bar color of active windows using the Settings app, or you can change the title bar color of inactive windows using Registry Editor. To learn these steps, go to the next section. How to change title bar color in Windows 11? 1. Using the Settings app press + to open the settings window. WindowsI go to "Personalization" and then

OOBELANGUAGE Error Problems in Windows 11/10 Repair OOBELANGUAGE Error Problems in Windows 11/10 Repair Jul 16, 2023 pm 03:29 PM

Do you see "A problem occurred" along with the "OOBELANGUAGE" statement on the Windows Installer page? The installation of Windows sometimes stops due to such errors. OOBE means out-of-the-box experience. As the error message indicates, this is an issue related to OOBE language selection. There is nothing to worry about, you can solve this problem with nifty registry editing from the OOBE screen itself. Quick Fix – 1. Click the “Retry” button at the bottom of the OOBE app. This will continue the process without further hiccups. 2. Use the power button to force shut down the system. After the system restarts, OOBE should continue. 3. Disconnect the system from the Internet. Complete all aspects of OOBE in offline mode

How to enable or disable taskbar thumbnail previews on Windows 11 How to enable or disable taskbar thumbnail previews on Windows 11 Sep 15, 2023 pm 03:57 PM

Taskbar thumbnails can be fun, but they can also be distracting or annoying. Considering how often you hover over this area, you may have inadvertently closed important windows a few times. Another disadvantage is that it uses more system resources, so if you've been looking for a way to be more resource efficient, we'll show you how to disable it. However, if your hardware specs can handle it and you like the preview, you can enable it. How to enable taskbar thumbnail preview in Windows 11? 1. Using the Settings app tap the key and click Settings. Windows click System and select About. Click Advanced system settings. Navigate to the Advanced tab and select Settings under Performance. Select "Visual Effects"

Display scaling guide on Windows 11 Display scaling guide on Windows 11 Sep 19, 2023 pm 06:45 PM

We all have different preferences when it comes to display scaling on Windows 11. Some people like big icons, some like small icons. However, we all agree that having the right scaling is important. Poor font scaling or over-scaling of images can be a real productivity killer when working, so you need to know how to customize it to get the most out of your system's capabilities. Advantages of Custom Zoom: This is a useful feature for people who have difficulty reading text on the screen. It helps you see more on the screen at one time. You can create custom extension profiles that apply only to certain monitors and applications. Can help improve the performance of low-end hardware. It gives you more control over what's on your screen. How to use Windows 11

10 Ways to Adjust Brightness on Windows 11 10 Ways to Adjust Brightness on Windows 11 Dec 18, 2023 pm 02:21 PM

Screen brightness is an integral part of using modern computing devices, especially when you look at the screen for long periods of time. It helps you reduce eye strain, improve legibility, and view content easily and efficiently. However, depending on your settings, it can sometimes be difficult to manage brightness, especially on Windows 11 with the new UI changes. If you're having trouble adjusting brightness, here are all the ways to manage brightness on Windows 11. How to Change Brightness on Windows 11 [10 Ways Explained] Single monitor users can use the following methods to adjust brightness on Windows 11. This includes desktop systems using a single monitor as well as laptops. let's start. Method 1: Use the Action Center The Action Center is accessible

How to Fix Activation Error Code 0xc004f069 in Windows Server How to Fix Activation Error Code 0xc004f069 in Windows Server Jul 22, 2023 am 09:49 AM

The activation process on Windows sometimes takes a sudden turn to display an error message containing this error code 0xc004f069. Although the activation process is online, some older systems running Windows Server may experience this issue. Go through these initial checks, and if they don't help you activate your system, jump to the main solution to resolve the issue. Workaround – close the error message and activation window. Then restart the computer. Retry the Windows activation process from scratch again. Fix 1 – Activate from Terminal Activate Windows Server Edition system from cmd terminal. Stage – 1 Check Windows Server Version You have to check which type of W you are using

See all articles