PHP 7.4 โ€“ New Features, Gotchas, and Learning Hub

# ๐Ÿง  PHP 7.4 โ€“ Feature Hub, Upgrade Guide, and Developer Notes

Released: **28 November 2019**
End of Life: **28 November 2022**

This page is a central resource for PHP 7.4 โ€” including all major new features, deprecations, upgrade notes, and learning articles.
Useful for interview prep, real-world migration, or mastering new syntax.

## ๐Ÿ”น New Features

– โœ… [Arrow Functions (`fn`) โ†’](/php-7-4-arrow-functions)
– โœ… [Typed Properties โ†’](/php-7-4-typed-properties)
– โœ… [Null Coalescing Assignment (`??=`) โ†’](/php-7-4-null-coalescing)
– โœ… [Spread Operator in Arrays โ†’](/php-7-4-spread-operator)
– โœ… [Numeric Literal Separator โ†’](/php-7-4-literal-separator)
– โœ… [WeakReference โ†’](/php-7-4-weak-reference)
– โœ… [Preloading โ†’](/php-7-4-preloading)
– โœ… [ReflectionType Enhancements โ†’](/php-7-4-reflectiontype)

## โš ๏ธ Deprecations & Gotchas

– โŒ [Curly Brace Array Access โ†’](/php-7-4-curly-deprecation)
– โŒ [implode() Parameter Order โ†’](/php-7-4-implode-fix)
– โŒ [Magic Quotes & `real` Type โ†’](/php-7-4-magic-deprecations)
– โŒ [Uninitialized Typed Properties โ†’](/php-7-4-uninit-error)

## ๐Ÿงช Upgrade Notes

– [Full Upgrade Checklist โ†’](/php-7-4-upgrade-checklist)
– [Laravel Compatibility Issues โ†’](/php-7-4-laravel-warning)
– [How to Enable Preloading โ†’](/php-7-4-preload-config)

## ๐Ÿš€ Performance Benchmarks

– Up to **15% faster** than PHP 7.3
– [Real-world Benchmarks โ†’](/php-7-4-performance)

## ๐Ÿ“˜ RFC Index (Official)

– [PHP.net RFC Archive โ†’](https://wiki.php.net/rfc#php_74)
– [Release Announcement โ†’](https://www.php.net/releases/7_4_0.php)
– [Full Migration Guide โ†’](https://www.php.net/manual/en/migration74.php)

## ๐Ÿง  My Developer Notes

– Typed properties are powerful but need null safety
– Arrow functions improve readability drastically
– Preloading is cool but hard to debug
– [See my tips for projects upgrading from 7.3 โ†’](/php-7-4-real-upgrade-tips)

## ๐Ÿ”– Tags: `php-7.4`, `upgrade-guide`, `laravel`, `performance`, `rfc`, `deprecations`

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