PHP 8 Performance Benchmark Report: JIT Delivers Up to 92% Speed Gain Over PHP 7.4
Phoronix benchmarked PHP 8 (including a JIT‑enabled build) against multiple older PHP versions, showing a modest 7% improvement over PHP 7.4 but a dramatic 92% boost with JIT, making PHP 8 + JIT roughly five times faster than PHP 5.4.
Phoronix published a performance benchmark report for PHP 8, built from the latest Git source as of end‑May 2023, comparing it with several previous PHP releases (5.4‑5.6, 7.0‑7.4) and a PHP 8 build with JIT enabled.
The test environment was identical for all versions, using the same compiler and PHP configuration; details of the hardware and OS are shown in the first image.
Results from PHPBench indicate that PHP 8 stable offers about a 7 % speed increase over PHP 7.4, while enabling JIT yields a dramatic 92 % improvement, making PHP 8 + JIT roughly five times faster than PHP 5.4.
Micro‑benchmarks and built‑in PHP tests confirm that PHP 8.0 is slightly faster than PHP 7.4, and the JIT‑enabled build outperforms all older versions, though I/O‑bound tests show little difference.
Overall, the composite score shows PHP 8.0 is about three times faster than PHP 5.4‑5.6, and about four times faster when JIT is enabled, highlighting the significant performance gains of the upcoming release.
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