A lightweight and practical PHP utility library that offers a collection of commonly used helper functions for files, strings, arrays, and HTTP requests—designed to streamline development and support everyday PHP projects.
🌱 Many of these implementations are conceptually simple, but rewriting them repeatedly across projects can become quite tedious. To make things easier, I gathered these utilities in one place to avoid reinventing the wheel — saving both time and effort.
Install via Composer:
composer require hejunjie/utilsThis is a typical "Developer's Time-Saving Toolkit." In everyday projects, you may often find yourself dealing with situations like:
Rewriting array operations over and over again;
- Searching StackOverflow every time you need to format file sizes;
- Copy-pasting checks to determine if a string is JSON, a phone number, or an email address;
- Having to refactor your utility classes whenever the project changes...
So, I’ve compiled these simple and frequently-used methods into this toolkit. It’s not about complexity or fancy features; the goal is to keep it simple, easy to use, and save you time and effort.
| method | describe |
|---|---|
| Str::containsAny() | Check if a string contains any of the elements in an array |
| Str::padString() | Pad a string to a specified length with a specific character |
| Str::replaceFirst() | Replace the first occurrence of a search value in a string |
| Str::generateRandomString() | Generate a random string |
| Str::getRandomSurname() | Get a random surname |
| Str::truncateString() | Truncate a string |
| Str::maskString() | String masking |
| Str::removeWhitespace() | Remove all whitespace characters from a string |
| Str::stringEncrypt() | Encrypt a string (AES-128-CBC) |
| Str::stringDecrypt() | Decrypt a string (AES-128-CBC) |
| Str::formatDurationFromSeconds() | Convert seconds to a human-readable time format |
| method | describe |
|---|---|
| Arr::arrayIntersect() | Get the intersection of two arrays |
| Arr::sortByField() | Sort a 2D array by a specific field |
| Arr::removeDuplicatesByField() | Remove duplicates from a 2D array based on a specific field |
| Arr::groupByField() | Group a 2D array by a specific field |
| Arr::csvToArray() | Read a CSV file and return it as an array |
| Arr::arrayToCsv() | Convert an array to a CSV formatted string |
| Arr::xmlParse() | Parse XML into an array |
| Arr::arrayToXml() | Convert an array to XML |
| method | describe |
|---|---|
| FileUtils::readFile() | Read file contents |
| FileUtils::writeToFile() | Write content to a file |
| FileUtils::getFileExtension() | Get the file extension |
| FileUtils::joinPaths() | Join multiple paths together |
| FileUtils::getFileNameWithoutExtension() | Get the file name (without extension) |
| FileUtils::fileDelete() | Delete a file or directory |
| FileUtils::writeUniqueLinesToFile() | Get unique lines from a file (deduplication) |
| FileUtils::getCommonLinesFromFiles() | Get intersecting lines from multiple files |
| FileUtils::extractColumnFromCsvFiles() | Quickly extract columns from multiple CSV files |
| method | describe |
|---|---|
| HttpClient::sendGetRequest() | Send a GET request using cURL |
| HttpClient::sendPostRequest() | Send a POST request using cURL |
| method | describe |
|---|---|
| Img::downloadImageFromUrl() | Download an image from a URL |
| Img::imageToBase64() | Convert an image to a Base64 string |
| Img::base64ToImage() | Save a Base64 string as an image |
| Img::compressImage() | Compress an image to a specified size (in KB), with support for converting various formats to JPEG |
| Img::resizeImage() | Resize an image while maintaining aspect ratio |
| method | describe |
|---|---|
| DataExporter::exportTxt() | Export TXT |
| DataExporter::exportMarkdown() | Export Markdown |
| DataExporter::exportCsv() | Export CSV |
| DataExporter::exportJson() | Export JSON |
| DataExporter::exportSql() | Export SQL |
| DataExporter::exportHtml() | Export HTML |
| DataExporter::exportXml() | Export XML |
This project was originally extracted from hejunjie/tools. To install all features in one go, feel free to use the all-in-one package:
composer require hejunjie/toolsAlternatively, feel free to install only the modules you need：
hejunjie/utils - A lightweight and practical PHP utility library that offers a collection of commonly used helper functions for files, strings, arrays, and HTTP requests—designed to streamline development and support everyday PHP projects.
hejunjie/cache - A layered caching system built with the decorator pattern. Supports combining memory, file, local, and remote caches to improve hit rates and simplify cache logic.
hejunjie/china-division - Regularly updated dataset of China's administrative divisions with ID-card address parsing. Distributed via Composer and versioned for use in forms, validation, and address-related features
hejunjie/error-log - An error logging component using the Chain of Responsibility pattern. Supports multiple output channels like local files, remote APIs, and console logs—ideal for flexible and scalable logging strategies.
hejunjie/mobile-locator - A mobile number lookup library based on Chinese carrier rules. Identifies carriers and regions, suitable for registration checks, user profiling, and data archiving.
hejunjie/address-parser - An intelligent address parser that extracts name, phone number, ID number, region, and detailed address from unstructured text—perfect for e-commerce, logistics, and CRM systems.
hejunjie/url-signer - A PHP library for generating URLs with encryption and signature protection—useful for secure resource access and tamper-proof links.
hejunjie/google-authenticator - A PHP library for generating and verifying Time-Based One-Time Passwords (TOTP). Compatible with Google Authenticator and similar apps, with features like secret generation, QR code creation, and OTP verification.
hejunjie/simple-rule-engine - A lightweight and flexible PHP rule engine supporting complex conditions and dynamic rule execution—ideal for business logic evaluation and data validation.
👀 All packages follow the principles of being lightweight and practical — designed to save you time and effort. They can be used individually or combined flexibly. Feel free to ⭐ star the project or open an issue anytime!
This library will continue to be updated with more practical features. Suggestions and feedback are always welcome — I’ll prioritize new functionality based on community input to help improve development efficiency together.