Found a total of 10000 related content
PHP file processing: reading, processing and writing tutorial
Article Introduction：This tutorial details how to use PHP for file operations, including reading data from files, processing data (such as numerical calculations and conditional judgments), and writing processed results to a new file. Through a specific grade processing example, you will learn how to use core functions such as file(), fopen(), fwrite() and fclose(), and master key techniques such as data type conversion, loop traversal and file flow management when processing file content.
2025-08-25
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613
PHP/Laravel CSV file post-processing: efficiently remove excess commas at the end of the line
Article Introduction：When exporting CSV files using tools such as Laravel-Excel, due to the inconsistent number of columns in different rows, unnecessary commas often appear in the head and tail rows. This article provides a concise and efficient PHP solution. By reading the file content, using the rtrim function to remove the extra commas and line breaks at the end of each line, and then rewrite the processed content to the file, thereby realizing the automated post-processing of CSV files and ensuring the clean and standardized output format.
2025-08-12
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443
PHP/Laravel CSV file post-processing: Remove excess tail commas from exported files
Article Introduction：This article aims to solve the problem of excessive tail commas at the header or end of the table when exporting CSV files using PHP or Laravel. We will explore a concise and efficient PHP solution, using the file() function to read the file contents, and accurately remove the specified characters at the end of each line (including commas and newlines) through the rtrim() function, and finally use file_put_contents() to rewrite the cleaned data to the file, thereby generating the expected CSV output.
2025-08-14
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449
How to Download a CSV file from a PHP Array?
Article Introduction：How to Create and Download a CSV File from a PHP ScriptCreating and downloading a CSV file from a PHP array is a useful technique in website...
2024-11-08
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593
PHP file processing practice: safe and efficient reading, modifying and writing data
Article Introduction：This tutorial explains the core practices of file read and write operations in PHP in detail. Through a specific grade processing case, it demonstrates how to use the file() function to read file contents into an array, perform data type conversion and business logic processing, and then use fopen() and fwrite() to write the processed data into a new file. It emphasizes the importance of file handle management and error handling, aiming to help developers build robust file operation scripts.
2025-08-24
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259
How to Force-Download a CSV File Through AJAX in PHP?
Article Introduction：This article explores the challenges of force-downloading a CSV file using AJAX in PHP. It highlights that AJAX cannot directly initiate file downloads, and suggests alternative methods to achieve the desired functionality. The solutions include crea
2024-10-24
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410
PHP Multi-File Upload Guide: Optimization of Processing with Array Form Fields
Article Introduction：This article details how to efficiently handle uploading multiple different file input fields in the same HTML form in PHP. By adopting array naming (such as name="files[image]" and name="files[document]"), uploaded data in the $_FILES hyperglobal variable can be elegantly organized and accessed. The article provides complete HTML forms and PHP processing code examples, covering key steps such as file verification, error handling, type judgment and secure storage, aiming to help developers build robust multi-file uploading functions.
2025-08-16
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606
PHP Streams: Efficient Data Handling for Large Files
Article Introduction：Topics: PHP Streams, File Handling in PHP, Large Dataset Processing, CSV Processing, PHP Performance Optimization
Table of Contents
Introduction
Overview of PHP Streams
Benefits of Using Streams
Hands-On Example with Part-by
2024-12-08
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1191
How to operate CSV files in PHP?
Article Introduction：Operating CSV files in PHP is mainly implemented through fgetcsv and fputcsv functions. 1) Read CSV file. Use the fgetcsv function to read and process data line by line. 2) Write to CSV file. Use the fputcsv function to write array data to the file. Note that line-by-line reading is used when file encoding and large file processing to optimize performance.
2025-05-20
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525
PHP trim() function strategy for handling newlines in CSV file processing
Article Introduction：When using the PHP trim() function to process CSV files, if you find that the line end commas cannot be removed, the core reason is often the difference in line breaks between different operating systems. exploit(PHP_EOL, $csv) may fail to completely remove invisible line breaks at the end of the line, causing trim() to fail to recognize and remove the target character. The solution is to extend the character mask of trim() so that it processes commas, carriage return (\r) and line breaks (\n) at the same time to ensure thorough data cleaning.
2025-08-26
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656
