Fix PHP 8.x Deprecated Errors: A Complete Guide for Developers in 2025

As PHP 8.2 and 8.3 take over hosting platforms, thousands of developers are encountering errors like:

Example Problem:
Deprecated: Function strftime() is deprecated in /home/site/index.php
Deprecated: Creation of dynamic property is deprecated

🚨 What's Causing These Errors?

PHP 8.x deprecates several functions and behaviors. Common culprits include:

• create_function() – Use anonymous functions instead
• strftime(), strptime() – Use DateTime or DateTimeImmutable
• Dynamic properties – Require explicit property declaration

✅ How to Fix PHP 8.x Deprecated Issues

1. Fix Dynamic Properties

Deprecated Code:

class User {}
$user = new User();
$user->name = "John";

Fixed Code:

class User {
    public string $name;
}
$user = new User();
$user->name = "John";

2. Replace Deprecated Date Functions

Deprecated Code:

echo strftime("%A");

Fixed Code:

echo (new DateTime())->format("l");

3. Suppress Deprecated Errors (Temporary)

Warning: This is a temporary solution for development only.

error_reporting(E_ALL & ~E_DEPRECATED);

📈 Why You Must Fix These for SEO

• ✔️ Improves Speed: No delays due to warnings
• ✔️ Prevents Google De-indexing: No broken pages
• ✔️ Enhances User Experience: Clean and smooth browsing
• ✔️ Future-Proof: Compatible with latest WordPress, Laravel, etc.

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📌 Conclusion

Deprecated PHP features are not just warnings—they’re signs your site could break any day. Use these tips to update your code, improve your SEO, and ensure long-term stability.

Want a downloadable fixer tool or PHP linter for deprecated issues? Comment below or contact us—let’s build one together!