Newest version of PHP 8.4

[cardil]

Summary by CodeRabbit

• Chores
  • Updated the PHP container environment with a refreshed base image version.
  • Removed a legacy encryption extension from the installation set.

[coderabbitai]

Walkthrough

The Containerfile has been updated with two main changes. The base image has been changed from php:8.3-fpm to php:8-fpm, and the mcrypt extension has been removed from the list of PHP extensions installed using install-php-extensions. These modifications alter the PHP environment setup within the container.

Changes

File	Change Summary
Containerfile	Updated base image from php:8.3-fpm to php:8-fpm and removed the mcrypt extension from the installation list.

Possibly related PRs

• Fix failing imagick #3: Modifies the base PHP image version in the Containerfile, aligning with the changes in this PR.

Poem

I'm a rabbit, hopping through changes with delight,
PHP's new base image shines ever so bright.
Mcrypt is gone, like tunnels deep underground,
Updating our Containerfile, new paths are found.
Code carrots crunch with every leap and bound!
🐇✨

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📜 Recent review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between ececa4d and c816ca6.

📒 Files selected for processing (1)

• Containerfile (1 hunks)

🧰 Additional context used

🧠 Learnings (1)

📓 Common learnings

Learnt from: cardil
PR: wavesoftware/container-php#1
File: Containerfile:1-2
Timestamp: 2025-03-15T12:36:37.343Z
Learning: In the `Containerfile` of this project, it's acceptable to use the major PHP version tag `php:8-fpm` instead of pinning to a specific minor version.

⏰ Context from checks skipped due to timeout of 90000ms (1)

• GitHub Check: Build images

🔇 Additional comments (2)

Containerfile (2)

1-1: Base image update aligned with project standards.

Using the major version tag php:8-fpm instead of pinning to a specific minor version like php:8.3-fpm will allow the container to automatically use the newest PHP 8.x release (currently 8.4), which aligns with the PR title and previous project feedback.

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8-32:

Details

✅ Verification successful

Appropriate removal of mcrypt extension.

The mcrypt extension has been removed from the list of installed PHP extensions, which is the correct approach as this extension has been deprecated since PHP 7.1 and was completely removed from PHP core in PHP 7.2 and later versions. This removal is necessary for compatibility with PHP 8.4.

Modern PHP applications should use OpenSSL or Sodium extension for cryptographic operations instead of mcrypt.

---

🌐 Web query:

Is mcrypt extension compatible with PHP 8.4?

💡 Result:

The mcrypt extension is not compatible with PHP 8.4 and has been deprecated for years. Here's a breakdown of the key details:

Deprecation and Removal Timeline

• PHP 7.1: mcrypt was deprecated[2][4].
• PHP 7.2+: Removed from core PHP and moved to an unofficial PECL extension[1][5][6]. Modern PHP versions (7.2 and later) use libsodium or OpenSSL for cryptography[1][6][7].

Key Issues with PHP 8.4 Compatibility

1. No Official Support: The PECL mcrypt extension is unmaintained[12][14], and its latest version only supports PHP up to 8.3.0[12]. There’s no indication of compatibility with PHP 8.4.
2. Installation Challenges: Even for older PHP versions (e.g., 7.2–7.4), installing mcrypt requires manual compilation[1][7], and this process is unsupported by major hosting platforms like cPanel[7].
3. Security Risks: The underlying libmcrypt library is obsolete and unmaintained, making it a poor choice for modern applications[1][6][14].

Recommended Alternatives

• Libsodium: Built into PHP 7.2+ and provides modern cryptographic functions[1][6].
• OpenSSL: Widely supported and actively maintained[4][7].
• Compatibility Shim: For legacy code, use phpseclib/mcrypt_compat as a drop-in replacement[9].

Example Code Migration

Replace mcrypt with openssl_encrypt:

// Old mcrypt code (deprecated)
// $encrypted = mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $key, $data, MCRYPT_MODE_CBC, $iv);

// Modern OpenSSL equivalent
$encrypted = openssl_encrypt($data, 'aes-256-cbc', $key, OPENSSL_RAW_DATA, $iv);

Conclusion

Avoid using mcrypt in PHP 8.4. Migrate to supported libraries like libsodium or OpenSSL[1][6][9]. If legacy code requires mcrypt, use the compatibility shim[9] or downgrade to PHP ≤7.1 (not recommended for security reasons).

Citations:

• 1: https://serverpilot.io/docs/how-to-install-the-php-mcrypt-extension/
• 2: https://www.php.net/manual/en/function.mcrypt-module-open.php
• 3: https://www.concrete5.org/community/forums/installation/required-php-extension-not-found-mcrypt
• 4: https://wordpress.org/support/topic/php-8-compatibility-issues-2/
• 5: https://www.php.net/manual/en/mcrypt.installation.php
• 6: https://www.blesta.com/forums/index.php?%2Ftopic%2F13363-replacement-for-mcrypt%2F
• 7: https://support.cpanel.net/hc/en-us/articles/360052537293-Using-the-mcrypt-extension-for-PHP-7-2-and-above
• 8: https://forum.hestiacp.com/t/installing-php-8-4/16678
• 9: https://www.php.net/manual/en/book.mcrypt.php
• 10: mcrypt extension not installable on php 8.1 php/php-src#7742
• 11: https://talk.plesk.com/threads/install-mcrypt-with-php-8.366761/
• 12: https://pecl.php.net/package/mcrypt
• 13: https://www.concrete5.org/community/forums/installation/bugand128027-concrete5-php-v7.2-mcrypt-not-longer-supported
• 14: cant build PHP 8.2.0 with mcrypt 1.0.5 php/pecl-encryption-mcrypt#12
• 15: https://blog.remirepo.net/post/2024/12/18/Install-PHP-8.4-on-Fedora-RHEL-CentOS-Alma-Rocky-or-other-clone

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Final Approval: Removal of mcrypt extension is correct for PHP 8.4 compatibility.

The Containerfile correctly excludes the mcrypt extension from the installed PHP extensions list. This removal is necessary because:

• Deprecation & Removal: mcrypt has been deprecated since PHP 7.1 and removed from PHP core in PHP 7.2.
• PHP 8.4 Compatibility: The extension is not compatible with PHP 8.4, as confirmed by the latest compatibility information.
• Modern Alternatives: Modern PHP applications should use alternatives like OpenSSL or libsodium for cryptographic operations.

No further changes are required in lines 8-32 of the Containerfile.

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