How can I merge the same field value and output it after querying mysql in php?

After php queries mysql, how to merge the same field value and then output the applicable php query to the table? to make the catalogue field output only two categories: keyboard and mouse. For example: Reply to discussion (solution) Php

Which environment is better for Wamp and Appserv.

Which environment is better for Wamp and Appserv. Which environment do you often use. In WIN7 64-bit systems, which environment is installed stable? I have been using Appserv, but Apache restarts. I have to go to computer management to manually

Curlpost-php Tutorial

Curlpost question $ voteurl = "http://www.qq.com/wenjuan.show.php? Act = sub & id = 7 & ucode = ". $ aid; $ Header = array ( 'Accept' => 'text/html, application/xhtml + xml, application/xml; q = 0.9, */*; q = 100 ', 'Curlopt _ cooker' => 'phpsessid =

I want to do php, but I am not sure

I want to do php, but I don't dare. I want to do php, but I don't dare. I don't know how difficult it is? I have learned how to add, delete, query, and perform other operations on the database by using html css js. To what extent can I do this? Who

Obtain a YYUC framework file and help document

Ask for a YYUC framework file and help document. Recently, a system was developed by YYUC. we know that the official website of YYUC has been closed and Baidu hasn't found it for a long time, therefore, you need to seek help from the omnipotent CSDN.

Php obtains the Internet ip address of the computer through ip address

Php obtains the Internet ip address of the computer through ip address Obtain the region through IP address // Obtain the IP address // $ Ip = $ _ SERVER ['remote _ ADDR ']; // automatically obtains the IP address of the client.

One form, two submit buttons, submit different pages

One form, two submit buttons, submit different pages For beginners, I have tried several methods, but only the page on which the action is submitted and which page can be successfully submitted. Reply to discussion (solution) Modify the

Proxy mode in php design mode

Proxy pattern in php design mode [proxy pattern] Header ("Content-type: text/html; charset = UTF-8 ");/*** What is the proxy mode? I am very busy. I am not busy with you. if you want to contact me, please first look for my agent,* The agent

Lazy php + nginx + mysql + redis

Lazy php + nginx + mysql + redis has been using apache before. The next wamp can be installed with one click. Today, nginx server is used, install mysql in php and nginx in redis in bitter bits. There are also troublesome configurations and version

Search for efficient algorithms

Search for efficient algorithms $ A = array ('a' => array (,), 'B' => array (,), 'C' => array, 7, 8, 9),) $ B = array ('2', '4 ') find out the subset of the $ B array that belongs to the array $ a, B, and C by using an efficient algorithm. Note that

How do I get fuzzy search in selectSUM sum?

How do I get fuzzy search in selectSUM sum? $ SQL = "select username, SUM (IF (types = 1, smoney, 0) as t1 from record where 1 = 1". $ s1. "GROUP BY username "; The result is as follows: the sum of the smoney fields of the types field = 1 of

Why does intval reduce decimal points by 1?

Why does intval reduce decimal points by 1 $ a = 2.3; Echo ($ a * 100); // output 230 Echo intval ($ a * 100); // output 229 I was confused when I first started using it. I don't know what's going on. I found the answer after checking a lot of

How does php convert an array into json data?

How does php convert an array into json data, for example Array ( [0] => [1] => B [2] => c [3] => h [4] => f ) I directly use json_encode ($ a); // $ a is the result printed using print_r (). The result is displayed as ["a", "B", "c", "h",

Object cannot be accessed after instantiation

Object cannot be accessed after instantiation Class person { Var $ name; Function say (){ Echo "hello! "; } } $ P = new person; $ P-> name = "TOM "; $ P-> say (); ?> Notice: Undefined variable: p in I: \ www.\ PHPnow-1.5.6.4237493736 \

Why can't I Capture webpages after meta jump? Urgently ask for advice!

Why can't I Capture webpages after meta jump? Urgently ask for advice! This is the case. I want to use zq on server1. php captures articles on server 2. the difficulty of php content is article. php seems to defend against automatic jump of leeching

Php code for remembering the password for automatic login

New user who wants to implement the code RT to remember the password for automatic login in php. I hope to provide the code that can be run. thank you. Reply to discussion (solution) Is extracted from the class. Private $ _ cookie_user_id =

Let's see what the returned data represents.

Look at what the returned data represents. good teacher. I opened the https://passport.baidu.com/v2/api? The problem occurs when login is simulated for login. ({Error_no: "0", param_in: {param1_name: "username", param1_value: "", param2_name:

Ask SQL statements to query one-to-multiple pages in multiple tables

For more information, see SQL statements. Topic, field to_id to_title Knowledge Point Table tag, field t_id t_title Join table relation, field to_id t_id Each question can have multiple knowledge points The search box is provided on

PHP array operation problems

PHP array operation problems include two arrays $ a and $ B. $ A = array ("1" => "123", "2" => "1234", "3" => "1334 "); $ B = array ("1" => "123," 2 "=>" 1230 "); How do I get $ c = array ("2" => "12234", "3" => "delete ");

Ask a question about php search

Ask a question about php search. for example, if I enter the keyword "sincerely", I can find the phrase "I have already given my heart to you". how can I use php to implement this? Please answer your questions. Reply to discussion (solution) It

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