What is the PHP code execution process?

The PHP code execution process is: 1. PHP code->Start php and zend engine; 2. Load the registration extension module->Perform lexical and syntactic analysis of the code; 3. Compile it into opcode-> Execute opcode.

PHP code execution process

##PHP code=> Start php and zend engine, load registration Extension module => Perform lexical/grammatical analysis of the code => Compile into opcode (opcache) => Execute opcode

Note: PHP7 has added an abstract syntax tree (AST), which is generated during the syntax analysis stage AST, and then generate the opcode array

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