🚀✨ Add Full PHP 8.4 Support 🐘🔧💥

[francescobianco]

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Description:

This issue is to officially track and implement support for PHP 8.4 across the php-imap2 library.

With PHP 8.4 introducing several changes (deprecations, strictness improvements, internal API adjustments), it's crucial to make sure php-imap2 stays compatible and stable moving forward.

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Checklist:

• Review all core files for potential incompatibilities
• Update deprecated PHP functions or syntax
• Validate compatibility with new PHP 8.4 INI defaults and behavior
• Test under PHP 8.4 using the full test suite (if available)
• Add PHP 8.4 to CI matrix (GitHub Actions / Travis / etc.)
• Update composer.json to allow php: ^8.4
• Tag a new release (v2.x.x or v3.0.0 depending on BC impact)

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Context:

• PHP 8.4 RFCs Overview
• Focus on:
  • Potential changes to imap_* functions under PHP 8.4
  • Stricter type handling in class constructors and method parameters
  • New warnings or deprecations that could affect this library

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Note:

If you’re already running PHP 8.4 and encounter any issues, please comment below with:

• PHP version output (php -v)
• Failing method / class
• Relevant error message or stack trace

Let’s keep this library future-proof and blazing fast! 🚀🐘💙