PHP内核两大流程之启动PHP的核心代码段
Step 1: Start the sapi extern zend_module_entry php_apache_module; static int php_apache2_startup(sapi_module_struct *sapi_module) { if (php_module_startup(sapi_module, &php_apache_module, 1)==FAILURE) { return FAILURE; } return SUCCESS; } Step 2: Start the php int php_module_startup(sapi_module_struct *sf, zend_module_entry *additional_modules, uint num_additional_modules) { zend_utility_functions zuf; zend_utility_values zuv; ..... sapi_module = *sf; php_output_startup(); zuf.error_function = php_error_cb; zuf.printf_function = php_printf; zuf.write_function = php_output_wrapper; zuf.fopen_function = php_fopen_wrapper_for_zend; zuf.message_handler = php_message_handler_for_zend; zuf.block_interruptions = sapi_module.block_interruptions; zuf.unblock_interruptions = sapi_module.unblock_interruptions; zuf.get_configuration_directive = php_get_configuration_directive_for_zend; zuf.ticks_function = php_run_ticks; zuf.on_timeout = php_on_timeout; zuf.stream_open_function = php_stream_open_for_zend; zuf.vspprintf_function = vspprintf; zuf.getenv_function = sapi_getenv; zuf.resolve_path_function = php_resolve_path_for_zend; zend_startup(&zuf, NULL TSRMLS_CC); ...... gc_globals_ctor(TSRMLS_C); ...... /* Register PHP core ini entries */ REGISTER_INI_ENTRIES(); /* Register Zend ini entries */ zend_register_standard_ini_entries(TSRMLS_C); /* Disable realpath cache if an open_basedir is set */ if (PG(open_basedir) && *PG(open_basedir)) { CWDG(realpath_cache_size_limit) = 0; } /* initialize stream wrappers registry * (this uses configuration parameters from php.ini) */ if (php_init_stream_wrappers(module_number TSRMLS_CC) == FAILURE) { php_printf("PHP: Unable to initialize stream url wrappers.\n"); return FAILURE; } /* startup extensions staticly compiled in */ if (php_register_internal_extensions_func(TSRMLS_C) == FAILURE) { php_printf("Unable to start builtin modules\n"); return FAILURE; } /* start additional PHP extensions */ php_register_extensions_bc(additional_modules, num_additional_modules TSRMLS_CC); /* load and startup extensions compiled as shared objects (aka DLLs) as requested by php.ini entries theese are loaded after initialization of internal extensions as extensions *might* rely on things from ext/standard which is always an internal extension and to be initialized ahead of all other internals */ php_ini_register_extensions(TSRMLS_C); zend_startup_modules(TSRMLS_C); /* start Zend extensions */ zend_startup_extensions(); ..... } int zend_startup (zend_utility_functions *utility_functions, char **extensions TSRMLS_DC) /* {{{ */ { zend_compiler_globals *compiler_globals; zend_executor_globals *executor_globals; ...... zend_compile_file = compile_file; zend_execute_ex = execute_ex; zend_execute_internal = NULL; zend_init_opcodes_handlers(); ...... }
郑重声明:本站内容如果来自互联网及其他传播媒体,其版权均属原媒体及文章作者所有。转载目的在于传递更多信息及用于网络分享,并不代表本站赞同其观点和对其真实性负责,也不构成任何其他建议。