The php 7.4 language

PHP 7.4 is out there with significant improvement in performance, reduced memory usage and code readability. Keep in mind that this is the last PHP 7.x version as PHP 8 is on the way !!

What is new

  • Typed properties
  • Arrow functions
  • Limited return type covariance and argument type contravariance
  • Null coalescing assignment operator
  • Unpacking inside arrays
  • Numeric literal separator
  • Weak References
  • Allow Exceptions from __toString()
  • Opcache Preloading
  • Several Deprecations
  • Extensions Removed from the Core
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