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Linter phpstorm7/12/2023 ![]() Next, you’ll want to add the following to enable JIT: opcache.jit_buffer_size=100M You should already have OPcache enabled via php.ini/opcache.ini: opcache.enable=1 PHP JIT is implemented as part of OPcache. No command line access? Use an OPcache Control Panel. ![]() Screenshot from CacheTool, a CLI OPcache manager. After you’ve confirmed PHP OPcache is enabled, it’s always nice to view its run-time stats to ensure that everything runs smoothly (ex., no OOM restarts). You can check if OPcache is enabled from phpinfo() output, or from command line using: php -v or php -i | grep opcache.enable. This may be set in the php.ini config file or via the opcache.ini file (ex. PHP 8 Performance tips – php.ini config tweaksįirst things first, something you probably already have enabled in PHP 7: OPcache. In addition to speed, PHP 8.0 delivers new features such as the much anticipated Just In Time (JIT) compiler, other performance optimizations, and built-in/core JSON support, to name a few. PHP 8, the improvements are not that drastic but based on many benchmarks it’s more than enough to be worthwhile. We know that PHP 7 was at least 2x faster than PHP 5.6.
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