Verification code class implemented in PHP

12 Jul 2016

PHP implements IMEI restricted SMS verification code sending class, imei verification code. IMEI restricted SMS verification code sending class implemented by php, imei verification code IMEI restricted SMS verification code sending class implemented by php ?phpclass Api_Sms{ const EXPIRE_SEC = 1800; // Expiration time interval

12 Jul 2016

Teach you how to implement verification code in php, implement verification code in php. Teach you how to implement verification code in PHP, implement verification code in PHP. Verification codes are implemented more and more in forms, but verification codes written in JS always feel inconvenient, so I learned about verification implemented in PHP.

20 Dec 2025

This article discusses how to prevent security risks caused by external malicious input when using the eval() function in PHP. In view of the limitations of directly escaping variables, the core of the article is to propose and demonstrate a method of blacklist-style detection and blocking of potentially dangerous functions (such as system command execution functions) by pre-verifying the entire command string to be executed, thereby enhancing the security of the use of eval(), and emphasizing the importance of avoiding the use of eval() or adopting a more strict whitelisting mechanism.

12 Jul 2016

PHP verification code generation principle and implementation, PHP verification code principle. PHP verification code generation principle and implementation, PHP verification code principle. Verification codes are implemented more and more in forms, but verification codes written in js always feel inconvenient, so I learned the verification code implemented in PHP.

04 Mar 2026

PHP7 should use random_bytes() to generate secure random strings, convert with bin2hex() or base64_encode(), and use random_int() to sample and generate verification codes from deobfuscated character sets (such as ‘23456789ABCDEFGHJKLMNPQRSTUVWXYZ’).

13 Feb 2026

The Go standard library net/http does not provide the function of obtaining the current matching route, but it can achieve accurate path matching verification by encapsulating HandleFunc, avoiding repeated judgments, improving code maintainability and compliance with the DRY principle.