Found a total of 10000 related content
PHP gets a list of directory files and uses it in JavaScript
Article Introduction：This article will introduce how to use PHP to read all file names in a specified directory and pass these file names to JavaScript code for use. Through PHP's file operation functions and JSON encoding, we can easily obtain file lists on the server and use JavaScript to further process them on the client, such as dynamically displaying file lists or performing other related operations.
2025-08-21
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814
File I/O using character streams
Article Introduction：Using character streams for file I/O operations in Java is primarily useful for manipulating Unicode text, unlike byte-based streams. Classes such as FileReader and FileWriter facilitate this operation with files.
2024-11-12
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621
No file operation in PHP implements attachment sending and data storage
Article Introduction：This tutorial explains in detail how to avoid creating temporary files in PHP and directly process Base64-encoded PDF data through memory operations. We will explore how to extract Base64 strings from XML, decode them and send mail via SendGrid as attachments, while storing the original Base64 data to the database, improving security, performance and simplifying code.
2025-08-24
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722
PHP gets a list of directory files and uses it in JavaScript
Article Introduction：This article will introduce how to use PHP to obtain the file names of all files in a specified directory and pass these file names into JavaScript code as an array. Read the directory through PHP's file operation function, then convert the PHP array into a JSON string using the json_encode function, and finally parse the JSON string in JavaScript, thereby realizing the passing and use of file names.
2025-08-21
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883
PHP file read and write operations: read, process and write grade data
Article Introduction：This document details how to use PHP for file reading and writing operations, and demonstrates in a practical case how to read grades from grades.txt file, add 1 (maximum value is 5), then write processed grades to the results.txt file, and finally output these processed grades in the console. Through this article, you will master the basic methods of PHP file operation and learn how to process data in files.
2025-08-26
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886
Restricting file input box to take photos only: Web application development tutorial
Article Introduction：This article introduces how to use the HTML file input box to implement the function of allowing users to take photos and prohibiting uploading local pictures in mobile web applications. By setting accept and capture properties, you can effectively control the behavior of file input boxes, improve user experience, and simplify user operation processes. This article will explain in detail the usage of related attributes and provide sample code to help developers quickly implement this function.
2025-08-13
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422
A Tour of PHP.INI
Article Introduction：Detailed explanation of PHP.ini file: The key to controlling PHP operation
The PHP.ini file is the core configuration file of the PHP server. It controls various parameter settings during PHP runtime, such as uploading directories, error logs, maximum script execution time, and file upload size limit. After modifying this file, you need to restart the server before the changes can take effect.
php.ini file location:
The location of the php.ini file varies depending on the server and how PHP is installed. You can use the phpinfo() function to find its location.
Key settings:
This article will focus on some important php.ini settings:
engine = On: Enable or disable the PHP engine. Setting it to Off will completely
2025-03-02
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925
python pytest tmp_path example
Article Introduction：tmp_path is a temporary directory fixture provided by pytest for file operation tests. 1. It is automatically created before each test and cleaned automatically after test; 2. It supports pathlib.Path operation, which can safely create files and directories; 3. It can be used to write and read files, verify directory structure, and use with open; 4. It is suitable for scenarios such as test configuration generation, log writing; 5. It is recommended to replace the old version of tmpdir, and the temporary content is automatically cleared after running to ensure that the test is isolated and pollution-free, and is the preferred tool for file-related testing.
2025-08-02
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547
Understanding Autoloading in PHP: How to Implement and Use It Efficiently
Article Introduction：Autoloading in PHP: Concept and Implementation
Autoloading is a mechanism in PHP that automatically loads classes when they are needed, without requiring an explicit include or require statement for each class file. It helps streamline code org
2025-01-01
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712
Tutorial for PHP to get file names in folders and pass them to JavaScript
Article Introduction：This article will describe how to use PHP to read all file names in a specified folder and encode these file names in JSON format and pass them to JavaScript. Through PHP's file operation functions and JSON encoding, it is easy to pass server-side data to the client, making it easier to use these file names for further processing in JavaScript.
2025-08-21
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197
PHP file contains variable scope and definition order analysis
Article Introduction：In the PHP file inclusion mechanism, the order of definition of variables is crucial. When a file (such as content.php) depends on variables defined in another file (such as index.php), you must ensure that these variables are initialized before the require or include statement. Otherwise, PHP will report an "Undefined variable" error, affecting the normal operation of the program. This article will elaborate on this common problem and its solutions.
2025-08-29
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217
How to format a USB drive in Windows?
Article Introduction：Formatting a USB flash drive means clearing all its data and rebuilding the file system. Common reasons include cleaning up viruses, fixing errors, replacing the file system, or creating a boot disk. Important information needs to be backed up before operation. You can right-click the Explorer to select "Format" and recommend the file system to be exFAT, and check "Quick Format". If you encounter problems, try disk management tools, command prompt to execute diskpart-related commands, or use third-party tools such as HPUSBDiskStorageFormatTool. If the USB flash drive is physically damaged, a new device needs to be replaced.
2025-07-06
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816
How to implement client file generation and download in JavaScript
Article Introduction：This tutorial details how to use JavaScript to generate files dynamically on the client and trigger downloads. The core principle is to use Data URI to embed file content encoding into the href attribute of the tag, and specify the file name by setting the download attribute, and finally simulate a click operation to achieve download. The article will provide clear code examples and explore the handling of different content types (such as text, HTML) and related precautions to help developers realize this function efficiently.
2025-08-18
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656
