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PHP 7 performance improvements (1/5): Packed arrays - Blackfire.io Le Blog
Julien Pauli, PHP contributor and release manager, details what changed between PHP 5 and PHP 7, and how to migrate and make effective use of the language optimizations. All statements are documented with specific examples and Blackfire profiles. First episode: Packed arrays saving up to 72% in compile and run time.
Julien Pauli