10 recommended articles on mysql_insert_id() function

Actually, there is a difference between the two. LAST_INSERT_ID() can return the id of a bigint value. However, mysql_insert_id returns int. If your id is unsigned int, or bigint. So, maybe what is returned is wrong. Use LAST_INSERT_ID() instead. Some friends also return 0. I don’t know why. In fact, LAST_INSERT_ID() returns the ID of AUTO_INCREMENT. If AUTO_INCREMENT is not set in the table structure, it cannot be returned. For some people, it still returns 0. Then you need to check whether the insert delay function is used. In this case, the immediate return id value will not be returned. Many people like to use select max(id) ... to replace this last_insert_id. In fact, select max(id) is not thread-safe and very

1. MYSQL tips - - LAST_INSERT_ID

Introduction:: MYSQL Tips--LAST_INSERT_ID: In fact, there is a difference between the two. LAST_INSERT_ID() can return the id of a bigint value. However, mysql_insert_id returns int. If your id is unsigned int, or bigint. So, maybe what is returned is wrong. Use LAST_INSERT_ID() instead. Some friends also return 0. I don’t know what’s going on. In fact, LAST_INSERT_ID() returns AUTO_

2. MYSQL Tips--LAST_INSERT_ID_PHP Tutorial

Introduction: MYSQL tips--LAST_INSERT_ID. In fact, there is a difference between the two. LAST_INSERT_ID() can return the id of a bigint value. However, mysql_insert_id returns int. If your id is unsigned int, or bigint. Then

3. php gets the ID value of the data just inserted_PHP tutorial

Introduction: php gets the ID value of the data just inserted The ID value of the data. This article will introduce you to PHP's method of obtaining the ID value of the data just inserted. PHP provides the mysql_insert_id() function. We only need to add echo mysql_insert_id() after inserting the data. Example

4. php mysql_insert_id() Returns the latest id implementation method of the database_PHP tutorial

Introduction: php mysql_insert_id () Returns the latest id implementation method of the database. php mysql_insert_id() returns the latest ID implementation method of the database. Students can refer to it if necessary. The code is as follows Copy the code mysql_insert_id() mysql_insert_id() The function returns to the previous step INSERT

5. Get the ID value of the record currently inserted into the database_PHP tutorial

Introduction: Get the ID value of the record currently inserted into the database. In PHP, it is often necessary to retrieve the id value inserted into the database, and there is just such a function: ?php //Execute the statement inserted into the database//$getID=mysql_insert_id();//$getID is the most

6. PHP returns the id generated by the insert operation_PHP tutorial

Introduction: PHP returns the id generated by the insert operation. Sometimes you need to know the ID generated after performing an INSERT operation in the database (the MySQL I use has the primary key set to AUTO_INCREMENT. When performing an insert operation, you do not need to specify the value of the ID but instead

7. Questions about mysql_insert_id

Introduction: Questions about mysql_insert_id

8. When inserting into the database When multiple tables are associated, it seems not easy to handle. Solution

#Introduction: When inserting into the database, when multiple tables are associated, it seems not easy to handle. For example, table a and table b are inserted into a ('text') values('hello'); id primary asc then generates an auto-incrementing id number, and then stores this id in table b. It seems that mysql_insert_id() can be used, but if many people operate at the same time, then I don’t know What's going on, because some people say it doesn't matter, but no one has done any specific experiments

9. Could you please tell me about the query efficiency of php mysql

Introduction: Please tell me about the query efficiency of php mysql. I need to upload the data in an excel document to the mysql database, and query the ID card column in the excel file. If the same column already exists in the database ID card, this record will not be imported. Currently I use this statement to query: SELECT id FROM information WHERE idcard = '$sfz' LIMIT 1 If the returned result is

10. MYSQL multi-table association insert data Regarding the problem, please help the expert, I am so worried...

Introduction: MYSQL multi-table association data insertion problem, please help the expert, I am so worried... I insert a row in table A data, the ID field in it grows automatically, and then I use mysql_insert_id(); to get the ID of the data just inserted, and then use a FOR loop to insert several pieces of data into table B. The ID of table B is the ID I just used mysql_insert_id( ); Obtained, the program appeared when the company's internal testing started. How did the ID of employee A's data inserted into table B become

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