Why PHP 7.0 RC2 Doubles Performance Over PHP 5 – Key Features Explained
PHP 7.0 RC2, released Friday, delivers up to 2‑2.5× speed improvements over PHP 5.3‑5.6 while using less memory, introduces a new Zend Engine with 64‑bit support, exception‑based fatal errors, null coalescing, combined comparison, return and scalar type declarations, anonymous classes, and more.
PHP 7.0 RC2 was released on Friday. In addition to new language features, a major improvement is performance, with developers claiming it is twice as fast as PHP 5.
Tests confirm PHP 7.0 runs 2–2.5 times faster than PHP 5.3‑5.6 while consuming less memory.
PHP 7.0 is approaching the performance of Facebook’s HHVM, which translates PHP code to native machine code.
PHP 7.0.0 comes with a new version of the Zend Engine featuring:
Improved performance: up to twice as fast as PHP 5.6
Consistent 64‑bit support
Many fatal errors are now Exceptions
Removal of old and unsupported SAPIs and extensions
The null coalescing operator (??)
Combined comparison operator (<=>)
Return type declarations
Scalar type declarations
Anonymous classes
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