Home > Database > Mysql Tutorial > How Can I Ensure Successful MySQL Data Modification and Return Appropriate Feedback in PHP?

How Can I Ensure Successful MySQL Data Modification and Return Appropriate Feedback in PHP?

Mary-Kate Olsen
Release: 2024-12-07 22:32:15
Original
274 people have browsed it

How Can I Ensure Successful MySQL Data Modification and Return Appropriate Feedback in PHP?

Determining Successful MySQL Query Execution for Database Table Data Modification

When performing database operations, it is crucial to verify whether a query has successfully modified table data. In this case, PHP code executes a query to delete an article from a database and returns a string response to a JavaScript function that updates the page via AJAX. The goal is to return "false" if the query fails.

Incorrect Attempt: Checking Query Preparation Only

The provided PHP code segment attempts to check if the SQL statement is prepared correctly but does not determine if the record is successfully deleted. To address this issue, the code should be updated to check the number of affected rows by the query.

Correct Approach: Verifying Affected Rows

The corrected code segment below checks whether any rows were affected by the query and returns "true" if at least one row was deleted, or "false" otherwise:

...
echo ($delRecord->affected_rows > 0) ? 'true' : 'false';
$delRecord->close();
Copy after login

Note: This approach assumes the JavaScript code correctly handles the string response. If issues arise in the JavaScript portion, more details would be required for assistance.

The above is the detailed content of How Can I Ensure Successful MySQL Data Modification and Return Appropriate Feedback in PHP?. For more information, please follow other related articles on the PHP Chinese website!

source:php.cn
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
Latest Articles by Author
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template