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- JavaScript cannot access PHP dynamically generate DOM elements: file extension is key
- This article aims to solve the common problem that JavaScript cannot get DOM elements dynamically generated by PHP. The core reason is that the file extension is not set properly, which causes the PHP code to not be correctly parsed by the server. By changing the file extension from .htm to .php, make sure that the PHP code is executed before being sent to the browser, enabling JavaScript to successfully access the expected DOM element.
- PHP Tutorial . Backend Development 947 2025-09-17 12:48:00
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- PHPMailer version compatibility and PHP environment selection
- This article explores the "can't use function return value in write context" error that occurs in older PHP environments such as PHP 5.4. The core problem is that PHPMailer 6.x requires PHP 5.5 and above, and older versions of PHP do not support modern syntax used internally. The article provides two solutions: recommend upgrading the PHP environment to the latest stable version, or temporarily downgrading the PHPMailer to the 5.2 series.
- PHP Tutorial . Backend Development 147 2025-09-17 12:24:00
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- In-depth understanding of Nginx FastCGI and PHP: Why can't you directly execute fileless code blocks
- This article explores the possibility of directly executing PHP code blocks through Nginx FastCGI without relying on physical file paths. The article points out that although users want to avoid creating files or symbolic links, Nginx's fastcgi_param directive is mainly used to pass environment variables, especially SCRIPT_FILENAME, which is crucial for the PHP-FPM parser to locate and execute scripts. Therefore, directly injecting and executing fileless PHP code blocks in Nginx configuration is not a regular support feature of FastCGI protocol or PHP-FPM.
- PHP Tutorial . Backend Development 846 2025-09-17 11:06:01
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- Have a problem using CURLOPT_POSTFIELDS to pass data to the server?
- This article aims to solve the problem that when using PHP's cURL library, the CURLOPT_POSTFIELDS option passes data to the server side, but the server side cannot receive data. By analyzing common causes and providing code examples, helping developers correctly pass POST data using cURL, ensuring that the server side can correctly receive and process this data.
- PHP Tutorial . Backend Development 653 2025-09-17 11:00:02
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- Composer Autoload cannot load classes automatically: Solutions and best practices
- This article aims to resolve the "Class not found" error encountered when using Composer for PHP project development. We will dig into the concept of namespaces and provide two solutions: using fully qualified class names and using use alias. In addition, the issue of class instantiation will be discussed to help developers avoid common pitfalls and ensure that Composer Autoload works properly.
- PHP Tutorial . Backend Development 416 2025-09-17 10:57:01
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- Add 'Open on new tab' feature to WooCommerce external products
- This article describes how to modify the Add to Cart button for external items in the WooCommerce store so that it opens the link in a new tab after clicking. Through custom code, you can modify the button behavior of the store page and product details page at the same time to improve the user experience. This tutorial provides detailed code examples and explains how to implement this function in the functions.php file.
- PHP Tutorial . Backend Development 607 2025-09-17 10:06:02
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- Add attachments to Trello cards using cURL and PHP
- This document will guide you how to upload files as attachments to Trello cards using the PHP and cURL libraries. We will explain in detail how to build a request, correctly set cURL options, and process uploaded file data, and ultimately implement the successful attachment of the file to the specified Trello card. Avoid common file upload problems and ensure that attachments can be uploaded and displayed correctly.
- PHP Tutorial . Backend Development 888 2025-09-17 09:12:02
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- MySQL and PHP: Efficiently determine whether the specified time falls within the database date interval
- This tutorial explains in detail how to use MySQL's BETWEEN operator and DATE() function, and combines PHP to achieve efficient and accurate date and time interval judgment. The article will guide readers to optimize SQL queries, avoid redundant formatting, and distinguish between all-weather and precise time comparison scenarios. At the same time, the performance of improving query existence judgment through SELECT 1 LIMIT 1 will be introduced to ensure that the specified time falls within the preset interval in the database quickly verifies.
- PHP Tutorial . Backend Development 176 2025-09-17 08:39:01
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- PHP Name Format: A Practical Method to Extract First Letters of First Names and Last Names
- This tutorial details how to format a full name in PHP to form a form of "first name. last name first." such as converting "Mike Jones" to "Mike. J." Through core functions such as exploit, reset, end and mb_substr, the article provides a robust solution and covers multi-word names and word names processing strategies to ensure character encoding compatibility and improve the accuracy and efficiency of name string processing.
- PHP Tutorial . Backend Development 885 2025-09-17 08:30:01
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- How to use array_map() in PHP?
- array_map()appliesacallbacktoeachelementofoneormorearrays,returninganewarraywithtransformedvalues.Iteliminatestheneedformanualloops,supportsanonymousornamedfunctions,andcancombinemultiplearrayselement-wise.Usingnullasthecallbackzipsarraysintotuples,m
- PHP Tutorial . Backend Development 597 2025-09-17 08:10:01
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- Strategies for efficient processing of camel request data and automatically mapped to snake named model properties in Laravel
- In Laravel applications, the request data sent by the current end is named camelCase, and when database fields and model attributes are usually named snake-shaped (snake_case), it will be very cumbersome to manually convert attributes one by one. This tutorial will introduce how to use Laravel's Str::snake() helper function to efficiently convert camel key names in requests into snake naming in batches, thereby simplifying the large number of assignment operations of the model and improving code maintainability and development efficiency.
- PHP Tutorial . Backend Development 460 2025-09-17 07:27:02
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- How to run a PHP script from the command line?
- TorunaPHPscriptfromthecommandline,ensurePHPisinstalledandinyourPATH;usephp-vtoverify.Runscriptswithphpscript.php,passargumentsvia$argvand$argc,andonLinux/macOS,addashebangandmakeitexecutablefordirectexecution.
- PHP Tutorial . Backend Development 852 2025-09-17 07:24:02
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- How to generate a unique ID (UUID) in PHP?
- AUUIDisa128-bitidentifierformattedas8-4-4-4-12hexadecimaldigits,ensuringglobaluniqueness.InPHP,generateUUIDv4usingrandom_bytes()forcryptographicsecurity:create16randombytes,setversion(4)andvariantbits,thenformatwithhyphensviavsprintfandstr_split.Exam
- PHP Tutorial . Backend Development 548 2025-09-17 07:23:00
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- How to check if a string ends with a specific substring in PHP?
- Use str_ends_with() of PHP8 to directly judge the end of the string and return a boolean value; 2. In early PHP versions, substr() can be used to intercept the end substring; 3. Or use strrpos() to calculate the last position match. It is recommended to use str_ends_with() for PHP8, and use substr() for old versions.
- PHP Tutorial . Backend Development 209 2025-09-17 06:29:00
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