Found a total of 10000 related content
Use GD library to do verification code in php, phpgd library verification code_PHP tutorial
Article Introduction：In php, GD library is used for verification code, and phpgd library is used for verification code. Use GD library to do verification code in php, phpgd library verification code php require_once 'string.func.php';//Use GD library to do verification code/** *Add verification text* @param int $type * @param int $length */function
2016-07-12
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974
How to generate image verification code in php, _PHP tutorial
Article Introduction：How to generate image verification code in php. How to generate image verification codes in PHP. This article shares with you how to generate image verification codes in PHP for your reference. The specific content is as follows. First, randomly select a fixed number from the specified character set.
2016-07-12
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1091
PHP image processing, php image processing_PHP tutorial
Article Introduction：PHP image processing, php image processing. PHP image processing, php image processing PHP provides some functions for editing and processing images. The most typical applications are random graphic verification codes, image watermarks and data statistics.
2016-07-12
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1082
php regex to validate a phone number
Article Introduction：Verifying regular expressions for phone numbers is not difficult in PHP, but the key is to clarify the format standards of legal phone numbers. 1. Different countries and business scenarios have different requirements for phone number formats, so general regularity is unrealistic; 2. Common formats include pure numbers, area codes, hyphens, international area code beginnings, extension numbers, etc.; 3. PHP uses the preg_match() function to perform regular matching, and rules can be flexibly written according to requirements; 4. When designing regularity, elements such as supporting digits, allowing symbols, whether international area codes are included; 5. Common errors include trying to cover all formats, ignoring boundary conditions, not conducting multi-case tests, and relying on back-end verification only. It is recommended to customize regular expressions according to specific project needs and do two-factor verification before and after.
2025-07-07
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995
The Ultimate PHP QR Code Library
Article Introduction：HeroQR: Your dream PHP QR code generation library. Are you still worried about QR code generation in PHP? Don't hesitate any longer! ?I am pleased to introduce you to HeroQR, an advanced open source PHP library designed to make QR code generation easy, powerful and flexible. Why choose HeroQR? HeroQR stands out for its customizability and ease of use. Whether you're a beginner looking for a simple QR code solution or an experienced developer in need of advanced features, HeroQR has what you need. Main Features of HeroQR HeroQR is designed to provide developers with powerful tools to create and customize QR codes. Here’s a quick overview of its standout features: Unparalleled customization with resizable additions
2025-01-15
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875
Explain JSON Web Tokens (JWT) and their use case in PHP APIs.
Article Introduction：JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,
2025-04-05
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1455
Dave The Diver: How To Catch Spider Crabs
Article Introduction：In Dave The Diver, there are some creatures that are not easy to catch. Or, catch alive that is. The spider crab is one of those very species, making it seem like the only way to bring these crustaceans back up to land is to viciously crack them up w
2025-01-10
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777
Prepare for Interview Like a Pro with Interview Questions CLI
Article Introduction：Prepare for Interview Like a Pro with Interview Questions CLI
What is the Interview Questions CLI?
The Interview Questions CLI is a command-line tool designed for JavaScript learners and developers who want to enhance their interview
2025-01-10
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1405
