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How to use PHP prepared statements to safely update multi-image product information (including file upload and old image cleaning)
27 Dec 2025
This article explains in detail how to correctly implement the product editing function with 5 pictures, focusing on solving the problems of old pictures not being released, variable overwriting and logical misalignment when updating multiple pictures, ensuring that each picture can independently determine the upload status and replace it safely.
Using Alamofire and PHP to implement image upload for iOS applications: complete guide and common problem solving
18 Dec 2025
This article aims to provide a comprehensive tutorial on how to upload images from an iOS app to a PHP backend server using the Alamofire library in Swift 5. We will discuss the client (Swift/Alamofire) and server-side (PHP) code implementation in detail, focusing on solving common configuration errors, data transmission issues and debugging techniques to ensure the stability and reliability of the image upload process.
Common reasons and complete solutions for multi-file upload failure in PHP 8.1
01 Apr 2026
When multiple file uploads in PHP 8.1 return an empty $_FILES array, it is usually not a language version problem, but a post_max_size or upload_max_filesize configuration that is too small, causing the request to be truncated; this article explains in detail the troubleshooting steps, configuration repairs, and robust upload implementation.
How to correctly use PHP preprocessing statements to update multi-image product information (including file upload and old image cleaning)
27 Dec 2025
This article explains in detail how to use MySQLi preprocessing statements to safely update product data containing 5 pictures. It focuses on solving common problems such as incorrect retention of old files when updating multiple pictures, unlink() call errors, and missing parameter bindings. It also provides robust conditional judgment logic and error protection measures.
How to correctly use PHP preprocessing statements to update multi-image product pages (including file upload and old image cleaning)
27 Dec 2025
This article explains in detail how to use PDO/MySQLi prepared statements to safely update product data containing 5 pictures, focusing on solving common problems such as incorrect retention of old pictures when updating multiple pictures, unlink() call errors, confusion in variable scopes, and misalignment of SQL binding parameters.
Tutorial on inserting pictures into specific cells in Excel using openpyxl
27 Nov 2025
This article details how to insert a picture into a specific cell of an Excel worksheet using Python's openpyxl library. The tutorial covers the key steps of loading an image, anchoring it to a specific cell, and automatically adjusting the row height and column width of the cell based on the image size. Through these methods, you can achieve the effect of the picture being perfectly visually adapted and "embedded" into the specified cell, instead of just being a floating object.
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