Detailed introduction to information insertion

PHP page

1. Detailed sample code of how PHP inserts information from the page to the database

Introduction: PHP page //Initialization act$_REQUEST['act']=$_REQUEST['act']?$_REQUEST ['act']:'';if($_REQUEST['act']=='add'){ include 'templates/zhiliang_add.php'; }elseif($_REQUEST['act']=='insert') { //File upload

##2. [Top] Basic operations of hbase

Introduction: Enter the hbase command line ./hbase shell View status status Display table list in hbase Create user table, including two column families: info and data create 'user', 'info1', 'data1' create 'user', {NAME = 'info', VERSIONS = '3'} Insert information into the user table, the row key is rk0001, add the name column label to the column family info

3. There is a user submitting information on the website activity page How to prevent others from maliciously inserting information into the database in batches?

Introduction: The website activity page has an entrance for users to submit information. How to prevent others from maliciously inserting information into the database in batches?

4. mysql-JSP page cannot be published

Introduction: Prompt message: java.sql.SQLException : Column count doesn't match value count at row 1 at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956) at com.mysql .jdbc.MysqlIO.checkErrorPa

5. mysql-php reads the data in a table from the database and lists it one by one on the page. The code is as follows, database There is information in it but it cannot be displayed

Introduction: No information yet! Insert information check

6. How to prevent repeated insertion of data when refreshing the webpage

Introduction: How to prevent repeated insertion of data when refreshing the webpage There are many ways to insert data and it is very simple. Below we will provide several reference processing methods. How to prevent data from being inserted when refreshing the webpage: I made a message board, but information will be inserted every time I refresh it. How can I prevent data from being inserted when refreshing? J...

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