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- Tutorials for filtering Google Classroom course list fields using PHP
- This tutorial details how to implement the Partial Response feature using PHP and Google Classroom APIs to filter specific fields in the course list. By properly configuring the fields parameters, developers can optimize API requests to get only the required course name and part of the information, thereby improving performance and reducing data transfer. The article also clarifies how unrequested fields are handled in the API response and provides PHP sample code and best practices.
- PHP Tutorial . Backend Development 982 2025-09-18 18:33:01
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- Front-end resource cache management: Ensure that the browser loads the latest version of CSS images
- When JavaScript and CSS files are cached updates through the version number mechanism, the image resources referenced in the CSS files may not be updated synchronously due to browser cache. This tutorial will introduce how to force the browser to reverify and load all resources by setting HTTP cache control meta tags in HTML, thereby ensuring that the user always gets the latest version of pictures and other front-end content.
- PHP Tutorial . Backend Development 436 2025-09-18 18:30:01
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- WooCommerce Advanced Discount Strategy: Implement the purchase of designated products and enjoy limited discounts for related classified products
- This article details how to achieve a premium conditional discount in WooCommerce. When a user's shopping cart contains a specific item, the system applies a discount to all items under the specified item category. The discount amount will be double-limited: it will not exceed the price of the specific product, nor will it exceed the total price of the product under the specified category, ensuring the accuracy and flexibility of the promotion.
- PHP Tutorial . Backend Development 274 2025-09-18 18:27:01
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- Precise control method for converting decimals into percentages in PHP
- This article aims to solve the problem that when converting extremely small decimals to percentages in PHP development, the result shows "0%" due to the default rounding rule. By deeply analyzing the default behavior of the round() function and its precision parameters, the article will guide readers how to accurately control the number of displayed digits of percentages, ensuring that even tiny percentage values ??can be presented correctly and clearly, avoiding misunderstandings.
- PHP Tutorial . Backend Development 604 2025-09-18 18:15:01
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- Practice and security considerations for HTML entity decoding in Laravel Blade components
- This article aims to solve the common character display problem in Laravel Blade components, that is, special characters such as apostrophes (') are escaped as HTML entities (such as '). We will dive into Blade's default HTML entity escape mechanism and its role in XSS protection, and provide a safe and recommended solution: use PHP's html_entity_decode() function, while alerting the potential security risks brought about by direct output of unescaped content ({!!!}), emphasizing that security is always put first when processing user input.
- PHP Tutorial . Backend Development 908 2025-09-18 18:12:01
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- Understand the meaning and processing methods of '.' and '..' in PHP file operations
- This article analyzes in detail the meaning of the special directory items "." and ".." in PHP file system operations, which represent the current directory and the parent directory respectively. When you get the directory list through the scandir function, these two pseudo-files will always be included. The article will explain why they are often needed to be skipped in actual file processing and provides sample code and best practices to help developers write robust file processing logic.
- PHP Tutorial . Backend Development 818 2025-09-18 18:09:01
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- WooCommerce Database Operation Guide for Batch Setting All Products Out of Stock (Clear Inventory)
- This tutorial provides detailed instructions on how to set the inventory quantity of all simple and variable products to zero in the WooCommerce store by directly manipulating the database (using PhpMyAdmin) to batches it to zero, thus making it appear as "out of stock" status. This method is suitable for handling a large number of products, avoiding the cumbersomeness of manual operations, and emphasizes the accuracy and potential risks of database backups and SQL queries before operation.
- PHP Tutorial . Backend Development 277 2025-09-18 18:06:00
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- DataTables AJAX data source security: Session variable method that prevents direct access to PHP interface
- This article describes a method to use PHP session variables to protect DataTables AJAX data source. By setting the session flag on the page where the table is loaded, and verifying and resetting the flag in a data interface (such as getData.php), users can be effectively prevented from directly accessing and crawling the original JSON data, ensuring that the data is returned only through the legal request of DataTables, thereby improving data security.
- PHP Tutorial . Backend Development 131 2025-09-18 18:03:01
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- How to correctly initialize and display multiple CodeMirror instances
- This tutorial explains in detail the key methods to correctly initialize multiple CodeMirror text editors in a web page. For common loop errors in selecting the first element repeatedly in a loop, this article provides the correct JavaScript code examples to ensure that each target textarea can be instantiated independently and correctly by CodeMirror, thus avoiding the problem that the content is only displayed in the first editor.
- HTML Tutorial . Web Front-end 246 2025-09-18 18:00:09
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- Solve the problem that the first element is always displayed during jQuery search
- This article aims to solve the problem that the first element always appears when using jQuery for dynamic list search. By analyzing the problem code, point out that the reason for the error is the wrong judgment of index 0, and providing modified code examples to ensure that the search function is running normally and avoid the first element being wrongly excluded from the search results.
- PHP Tutorial . Backend Development 297 2025-09-18 17:57:02
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- Web application security: Content type detection and defense policies in file upload
- This article explores security best practices for website file uploads, emphasizing that verification should not be relied on only file extensions, as they are easy to forge. The core suggestion is to use server-side file content detection technology, such as PHP's fileinfo extension, to accurately judge the real type of the file by identifying the magic bytes inside the file, thereby effectively preventing the security risks brought by malicious file uploads.
- PHP Tutorial . Backend Development 870 2025-09-18 17:54:01
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- Modify Google Chart Chart: Date Format, Reversal Chart, and Data Processing
- This document is intended to help you modify Google Chart charts to make them easier to read and understand. We will focus on how to modify the date display format, reverse the chart orientation, and process the data (for example, divide the wind speed by 10). Through this article, you will learn how to customize Google Chart to suit your specific needs.
- HTML Tutorial . Web Front-end 514 2025-09-18 17:51:00
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- Implementation and considerations of sorting by intermediate table fields in Symfony Doctrine
- This article aims to explore how to sort many-to-many-related sets in Symfony and Doctrine ORM. We will focus on scenarios where additional sort fields exist in the Join Table and analyze the limitations of using @ORM\OrderBy annotation, while providing standard solutions to ensure data is retrieved in the expected order.
- PHP Tutorial . Backend Development 880 2025-09-18 17:30:01
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- CSS style coverage tips: Accurately modify the background color of nested Div without class names
- This article explains in detail how to use the CSS direct subselector (>) to accurately cover the background color of multi-layer nested, non-specific class names. For scenarios where HTML cannot be modified, we emphasize the importance of correctly building selector chains, avoid misuses such as nth-child, ensure that the style can be applied effectively, and achieve precise control of complex DOM structures.
- HTML Tutorial . Web Front-end 643 2025-09-18 17:24:01
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