发布PHP中password_hash/verify代码至Git仓库的安全标准咨询

Great question—this is a super common concern when sharing code publicly, so let’s break down what’s safe, what’s not, and the best practices to follow.

Short Answer: Yes, publishing code that calls these functions is 100% safe #

password_hash() and password_verify() are core PHP security functions maintained by the PHP team. When you write code like:

$hashedPassword = password_hash($userInputPassword, PASSWORD_DEFAULT);
// Or later to verify
if (password_verify($userInputPassword, $storedHashedPassword)) {
    // Login success
}

You’re just telling PHP to use its built-in, battle-tested hashing logic. This code doesn’t expose any sensitive data, secret keys, or actual user passwords—it’s just implementing the standard secure way to handle password storage.

What You Must Never Publish to Git Repositories #

The danger comes from including sensitive data alongside this code, not the function calls themselves. Avoid committing:

• Actual hashed passwords (e.g., test entries from your local database)
• Configuration files with database credentials, API keys, or environment secrets (like .env files)
• Hardcoded test passwords or any user-specific sensitive data

Key Security Best Practices to Follow #

• Use .gitignore properly: Add entries for .env, local config files, log files, and any other files that contain sensitive data. This prevents accidental commits of secret information.
• Stick to PASSWORD_DEFAULT: This ensures you’re always using the strongest recommended hashing algorithm (currently bcrypt, with automatic upgrades as PHP evolves). Don’t manually generate salts—password_hash() creates secure, unique salts automatically, so you don’t need to handle that in your code.
• Never hardcode sensitive values: All secrets (database passwords, API keys) should live in environment variables, not your codebase.
• Audit your code before committing: Double-check that you haven’t left test hashes or passwords in comments, debug logs, or test scripts.

Final Note #

Publishing your password handling logic that uses these functions is actually a good thing—it shows you’re following PHP’s official security guidelines. The only risk is accidental inclusion of sensitive data, which can be easily avoided with proper repository hygiene.

内容的提问来源于stack exchange，提问作者John