10 recommended articles about the mysql_affected_rows() function

This article collects 10 articles about the mysql_affected_rows() function and recommends it to everyone

1. php interview question five - MySQL database (Basic part) mysql database download 64-bit sql database instance download sql database patch download

Introduction: Mysql database: PHP interview question No. 5 - MySQL database (basic part) : mysql_num_rows() mysql_affected_rows() Both functions operate on the results of the mysql_query($query) operation. mysql_num_rows() returns the number of rows in the result set. mysql_affected_rows() gets the number of record rows affected by the previous MySQL operation. mysql_num_rows() is only valid for SELECT statements. To get the number of rows changed by INSERT, UPDATE or DE

2. Get the number of rows changed after php updates mysql_PHP tutorial

Introduction: Get the number of changed rows after php updates mysql. After a php updates mysql, get the number of changed rows. The mysql function is provided in php to get the number of records affected by the last executed query: mysql_affected_rows(), which returns the latest connection handle

3. The exception cannot be found, please ask for expert guidance

Introduction: Error not found ah! Seeking expert guidance Make sure that the SQL statement is not written incorrectly and can be run in the database. What is wrong? ------Solution--------------------Your program issues a warning in the mysql_affected_rows() function. He says that the first parameter value of the function is Expecting you to give a valid (database) resource, you have to check the parameters you pass to it. You separate the sql operations at both ends and test the latter part separately&

4. How does MySQL confirm that the update, delete, and insert statements are successfully executed

Introduction: How does MySQL confirm that update, delete, and insert statements are successfully executed? As mentioned, I have been judging by mysql_affected_rows(). This means that almost every update, delete, and insert sentence must be followed by if(mysql_affected_rows()!=1){error report}. Is there any simpler way? ------Solution ideas-------------

5. Weird questions about account activation

Introduction: Regarding the strange problem of account activation, please ask me what is the problem with this code. It used to be fine, but now there is an inexplicable problem. The editor is netbeans and I have reinstalled it. Now The second _query function can be executed during runtime, that is, the operation on the database is successful, and then skip the mysql_affected_rows() section and directly execute the following else { _alert_back('illegal operation');

6. Cannot find exception, please ask for expert guidance

Introduction: Cannot find error! I'm looking for expert guidance to ensure that the SQL statement is not written incorrectly and can be run in the database. What is wrong? ------Solution--------------------Your program issues a warning in the mysql_affected_rows() function. He says that the first parameter value of the function is Expecting you to give a valid (database) resource, you have to check the parameters you pass to it. You separate the sql operations at both ends and test the latter part separately&nb

7. Get the number of changed rows after php updates mysql

Introduction: Get the number of changed rows after php updates mysql. After a php updates mysql, get the number of changed rows. The mysql function is provided in php to get the number of records affected by the last executed query: mysql_affected_rows(), which returns the latest connection handle

8. Get the number of record rows affected by the previous MySQL operation

Introduction: Get the number of record rows affected by the previous MySQL operation. This article is reproduced from:? ? http://blog.csdn.net/militala/article/details/5996510 ? ? mysql_affected_rows() returns the number of record rows affected by the latest INSERT, UPDATE or DELETE query associated with the connection handle. FOUND_ROWS() : select ROW_COUNT ()

9. CAPI function description (A-F)

Introduction: 25.2.3.1. mysql_affected_rows() my_ulonglong mysql_affected_rows(MYSQL *mysql) Description Returns the number of rows changed by the last UPDATE, the number of rows deleted by the last DELETE, or the number of rows inserted by the last INSERT statement. For UPDATE, DELETE or INSERT statements, they can be called immediately after mysql_query(). For the SELECT statement, my

10. Detailed explanation of MySQL database functions_MySQL

## Introduction: Author: Caixiang OSO Search(1?int mysql_affected_rows([int link_id]); In a given connection, returns the number of rows affected by the most recent DELETE, INSERT, REPLACE, or UPDATE statement. If no rows were modified, mysql_affected_rows() returns 0 , if an error occurs, returns -1 after the SELECT query, mysql_affected_r

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