JIT (Just-In-Time) compilation in PHP is a performance optimization technique introduced in PHP 8. The JIT compiler transforms PHP bytecode operations directly into native machine code during program execution. This enhances the speed of PHP scripts, as native code executes faster than interpreted bytecode.
How JIT works in PHP:
Interpretation: Initially, PHP scripts are interpreted into bytecode, which is executed by the Zend VM (virtual machine).
Dynamic Optimization: The JIT compiler analyzes the runtime execution of bytecode and selects portions of code for optimization.
Generation of Native Code: The chosen code segments are converted into native machine code, executed directly at the hardware level.
Faster Execution Code: Native code executes faster, resulting in improved performance for PHP applications.
