├── LICENSE ├── README.md └── php7 └── readme.md /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. By contrast, 15 | the GNU General Public License is intended to guarantee your freedom to 16 | share and change all versions of a program--to make sure it remains free 17 | software for all its users. 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It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # php-src-analysis 2 | 3 | PHP源码分析注解。 4 | 5 | ###### 进度log 6 | 7 | | Date | 解决点 | 8 | | ---- | ------ | 9 | | // | // | 10 | 11 | 12 | 13 | ### PHP 源代码分析目录 14 | 15 | 1. #### 第一章 构建系统 准备工具、库及需要具备的基础知识； 16 | 17 | 2. ​ 如何编译不同平台的版本？编译时的各个选项是什么含义？ 18 | 19 | 3. ​ 如何创建一个 PHP 扩展/模块？如何创建一个 Zend 扩展？ 20 | 21 | 4. ​ 如何调试 PHP？如何调试 PHP/Zend 扩展？ 22 | 23 | 24 | 25 | 5. #### 第二章 PHP 与 SAPI 的生命周期 脚本的运行周期 26 | 27 | 6. ​ 模块/脚本的起始与终止函数； 28 | 29 | 7. ​ PHP SAPI 协议； 30 | 31 | 8. ​ 嵌入式 PHP 设计。 32 | 33 | 34 | 35 | 9. #### 第三章 内存管理 Zend 的内存管理器框架； 36 | 37 | 10. ​ 内存申请与释放流程，垃圾回收； 38 | 39 | 11. ​ 持久化（persistence） 40 | 41 | 42 | 43 | 12. #### 第四章 线程安全 TSRM 44 | 45 | 13. ​ 我是否该启用 ZTS？各有什么优缺点？ 46 | 47 | 14. ​ 如何构建一个 ZTS 的程序/扩展？ 48 | 49 | 50 | 51 | 15. #### 第五章 变量与常量 PHP 中的数据类型。 52 | 53 | 16. ​ 变量、常量与静态变量。 54 | 55 | 17. ​ 引用计数机制； 56 | 57 | 18. ​ 资源的创建与回收； 58 | 59 | 19. ​ 未来字符串的 UNICODE 支持、JIT 支持。 60 | 61 | 62 | 63 | 20. #### 第六章 函数 函数的内部布局； 64 | 65 | 21. ​ 函数的定义； 66 | 67 | 22. ​ 如何获取函数的参数。可选参数、参数默认值； 68 | 69 | 23. ​ 函数的返回值； 70 | 71 | 72 | 73 | 24. #### 第七章 类与对象 类的内部布局（属性、方法）； 74 | 75 | 25. ​ 构造函数与析构函数； 76 | 77 | 26. ​ 类的继承与转换； 78 | 79 | 27. ​ 接口（轻量级的类），微观上与类的差别； 80 | 81 | 28. ​ 类之间的up casting 和 down casting。 82 | 83 | 29. ​ stdClass。 84 | 85 | 86 | 87 | 30. #### 第八章 错误与异常 什么是错误、什么是异常。两者的区别； 88 | 89 | 31. ​ 如何创建和抛出异常； 90 | 91 | 32. ​ try/catch 的设计与实现； 92 | 93 | 94 | 95 | 33. #### 第九章 流（Streams）支持 这方面我接触较少，内容待定； 96 | 97 | 98 | 99 | 34. #### 第十章 虚拟机 脚本编译机制（词法分析、语法分析）； 100 | 101 | 35. ​ 脚本的执行机制（CALL|SWITCH|GOTO）； 102 | 103 | 36. ​ 各个符号表的作用； 104 | 105 | 37. ​ 开发 OPCode 缓存器； 106 | 107 | 38. ​ 开发 PHP 调试器； 108 | 109 | 39. ​ PHP编译执行分离的实现(或者，源码加密的实现) 110 | 111 | 112 | 113 | 40. #### 附录 完整的 PHP API、Zend API 以及宏（Micro）参考（长期工程） 114 | 115 | 41. ​ Zend Engine 1 的主要特性，与 Zend Engine 2的主要差别； 116 | 117 | 42. ​ Zend Engine 3 的主要特性，与 Zend Engine 2的主要差别； 118 | 119 | 43. ​ 相关资源 -------------------------------------------------------------------------------- /php7/readme.md: -------------------------------------------------------------------------------- 1 | # PHP7 2 | 3 | ## 二.源码结构(v7.4) 4 | 5 | ```c 6 | TSRM: 7 | |——TSRM.c 8 | |——TSRM.h 9 | |——config.w32 10 | |——threads.m4 11 | |——tsrm.m4 12 | |——tsrm_win32.c 13 | |——tsrm_win32.h 14 | 15 | Zend: 16 | |——tests: 17 | |——Makefile.frag 18 | |——Zend.m4 19 | |——bench.php 20 | |——micro_bench.php 21 | |——zend.c 22 | |——zend.h 23 | |——zend_API.c 24 | |——zend_API.h 25 | |——zend_alloc.c 26 | |——zend_alloc.h 27 | |——zend_alloc_sizes.h 28 | |——zend_arena.h 29 | |——zend_ast.c 30 | |——zend_ast.h 31 | |——zend_bitset.h 32 | |——zend_build.h 33 | |——zend_builtin_functions.c 34 | |——zend_builtin_functions.h 35 | |——zend_closures.c 36 | |——zend_closures.h 37 | |——zend_compile.c 38 | |——zend_compile.h 39 | |——zend_config.w32.h 40 | |——zend_constants.c 41 | |——zend_constants.h 42 | |——zend_cpuinfo.c 43 | |——zend_cpuinfo.h 44 | |——zend_default_classes.c 45 | |——zend_dtrace.c 46 | |——zend_dtrace.d 47 | |——zend_dtrace.h 48 | |——zend_errors.h 49 | |——zend_exceptions.c 50 | |——zend_exceptions.h 51 | |——zend_execute.c 52 | |——zend_execute.h 53 | |——zend_execute_API.c 54 | |——zend_extensions.c 55 | |——zend_extensions.h 56 | |——zend_float.c 57 | |——zend_float.h 58 | |——zend_gc.c 59 | |——zend_gc.h 60 | |——zend_generators.c 61 | |——zend_generators.h 62 | |——zend_globals.h 63 | |——zend_globals_macros.h 64 | |——zend_hash.c 65 | |——zend_hash.h 66 | |——zend_highlight.c 67 | |——zend_highlight.h 68 | |——zend_inheritance.c 69 | |——zend_inheritance.h 70 | |——zend_ini.c 71 | |——zend_ini.h 72 | |——zend_ini_parser.y 73 | |——zend_ini_scanner.h 74 | |——zend_ini_scanner.l 75 | |——zend_interfaces.c 76 | |——zend_interfaces.h 77 | |——zend_istdiostream.h 78 | |——zend_iterators.c 79 | |——zend_iterators.h 80 | |——zend_language_parser.y 81 | |——zend_language_scanner.h 82 | |——zend_language_scanner.l 83 | |——zend_list.c 84 | |——zend_list.h 85 | |——zend_llist.c 86 | |——zend_llist.h 87 | |——zend_long.h 88 | |——zend_map_ptr.h 89 | |——zend_modules.h 90 | |——zend_multibyte.c 91 | |——zend_multibyte.h 92 | |——zend_multiply.h 93 | |——zend_object_handles.c 94 | |——zend_object_handles.h 95 | |——zend_objects.c 96 | |——zend_objects.h 97 | |——zend_objects_API.c 98 | |——zend_objects_API.h 99 | |——zend_opcode.c 100 | |——zend_operators.c 101 | |——zend_operators.h 102 | |——zend_portability.c 103 | |——zend_ptr_stack.c 104 | |——zend_ptr_stack.h 105 | |——zend_range_check.h 106 | |——zend_signal.c 107 | |——zend_signal.h 108 | |——zend_smart_str.c 109 | |——zend_smart_str.h 110 | |——zend_smart_str_public.h 111 | |——zend_smart_string.h 112 | |——zend_smart_string_public.h 113 | |——zend_sort.c 114 | |——zend_sort.h 115 | |——zend_stack.c 116 | |——zend_stack.h 117 | |——zend_stream.c 118 | |——zend_stream.h 119 | |——zend_string.c 120 | |——zend_string.h 121 | |——zend_strtod.c 122 | |——zend_strtod.h 123 | |——zend_strtod_int.h 124 | |——zend_ts_hash.c 125 | |——zend_ts_hash.h 126 | |——zend_type_info.h 127 | |——zend_types.h 128 | |——zend_variables.c 129 | |——zend_variables.h 130 | |——zend_virtual_cwd.c 131 | |——zend_virtual_cwd.h 132 | |——zend_vm.h 133 | |——zend_vm_def.h 134 | |——zend_vm_execute.h 135 | |——zend_vm_execute.skl 136 | |——zend_vm_gen.php 137 | |——zend_vm_handlers.h 138 | |——zend_vm_opcodes.c 139 | |——zend_vm_opcodes.h 140 | |——zend_vm_trace_handlers.h 141 | |——zend_vm_trace_map.h 142 | |——zend_weakrefs.c 143 | |——zend_weakrefs.h 144 | build: 145 | |——Makefile.gcov 146 | |——Makefile.global 147 | |——ax_check_compile_flag.m4 148 | |——ax_func_which_gethostbyname_r.m4 149 | |——ax_gcc_func_attribute.m4 150 | |——config-stubs 151 | |——config.guess 152 | |——config.sub 153 | |——genif.sh 154 | |——libtool.m4 155 | |——ltmain.sh 156 | |——order_by_dep.awk 157 | |——php.m4 158 | |——php_cxx_compile_stdcxx.m4 159 | |——pkg.m4 160 | |——print_include.awk 161 | |——shtool 162 | docs: 163 | |——input-filter.md 164 | |——mailinglist-rules.md 165 | |——output-api.md 166 | |——parameter-parsing-api.md 167 | |——release-process.md 168 | |——self-contained-extensions.md 169 | |——streams.md 170 | |——unix-build-system.md 171 | ext: 172 | |——(too many, not list at this time。。。) 173 | main: 174 | |——streams： 175 | |——cast.c 176 | |——filter.c 177 | |——glob_wrapper.c 178 | |——memory.c 179 | |——mmap.c 180 | |——php_stream_context.h 181 | |——php_stream_filter_api.h 182 | |——php_stream_glob_wrapper.h 183 | |——php_stream_mmap.h 184 | |——php_stream_plain_wrapper.h 185 | |——php_stream_transport.h 186 | |——php_stream_userspace.h 187 | |——php_streams_int.h 188 | |——plain_wrapper.c 189 | |——streams.c 190 | |——transports.c 191 | |——userspace.c 192 | |——xp_socket.c 193 | |——SAPI.c 194 | |——SAPI.h 195 | |——alloca.c 196 | |——build-defs.h.in 197 | |——explicit_bzero.c 198 | |——fastcgi.c 199 | |——fastcgi.h 200 | |——fopen_wrappers.c 201 | |——fopen_wrappers.h 202 | |——getopt.c 203 | |——http_status_codes.h 204 | |——internal_functions.c.in 205 | |——internal_functions_win32.c 206 | |——main.c 207 | |——mergesort.c 208 | |——network.c 209 | |——output.c 210 | |——php.h 211 | |——php_compat.h 212 | |——php_content_types.c 213 | |——php_content_types.h 214 | |——php_getopt.h 215 | |——php_globals.h 216 | |——php_ini.c 217 | |——php_ini.h 218 | |——php_main.h 219 | |——php_memory_streams.h 220 | |——php-network.h 221 | |——php_open_temporary_file.c 222 | |——php_open_temporary_file.h 223 | |——php_output.c 224 | |——php_reentrancy.h 225 | |——php_scandir.c 226 | |——php_scandir.h 227 | |——php_stdint.h 228 | |——php_streams.h 229 | |——php_syslog.c 230 | |——php_syslog.h 231 | |——php_ticks.c 232 | |——php_ticks.h 233 | |——php_variables.c 234 | |——php_variables.h 235 | |——php_version.h 236 | |——reentrancy.c 237 | |——rfc1867.c 238 | |——rfc1867.h 239 | |——snprintf.c 240 | |——snprintf.h 241 | |——spprintf.c 242 | |——spprintf.h 243 | |——strlcat.c 244 | |——strlcpy.c 245 | pear: 246 | |——Makefile.frag 247 | |——fetch.php 248 | |——install-pear.txt 249 | sapi: 250 | |——apache2handler: 251 | |—— 252 | |——cgi: 253 | |——tests: 254 | |——Makefile.frag 255 | |——cgi_main.c 256 | |——config.w32 257 | |——config9.m4 258 | |——php-cgi.1.in 259 | |——php.sym 260 | |——cli: 261 | |——tests: 262 | |——Makefile.frag 263 | |——cli.h 264 | |——cli_win32.c 265 | |——config.m4 266 | |——config.w32 267 | |——generate_mime_type_map.php 268 | |——mime_type_map.h 269 | |——php.1.in 270 | |——php_cli.c 271 | |——php_cli_process_title.c 272 | |——php_cli_process_title.h 273 | |——php_cli_server.c 274 | |——php_cli_server.h 275 | |——php_http_parser.c 276 | |——php_http_parser.h 277 | |——ps_title.c 278 | |——ps_title.h 279 | |——embed: 280 | |—— 281 | |——fpm: 282 | |——fpm: 283 | |——events: 284 | |——devpoll.c 285 | |——devpoll.h 286 | |——epoll.c 287 | |——epoll.h 288 | |——kqueue.c 289 | |——kqueue.h 290 | |——poll.c 291 | |——poll.h 292 | |——port.c 293 | |——port.h 294 | |——select.c 295 | |——select.h 296 | |——fpm.c 297 | |——fpm.h 298 | |——fpm_arrays.h 299 | |——fpm_atomic.h 300 | |——fpm_children.c 301 | |——fpm_children.h 302 | |——fpm_cleanup.c 303 | |——fpm_cleanup.h 304 | |——fpm_clock.c 305 | |——fpm_clock.h 306 | |——fpm_conf.c 307 | |——fpm_conf.h 308 | |——fpm_config.h 309 | |——fpm_env.c 310 | |——fpm_env.h 311 | |——fpm_events.c 312 | |——fpm_events.h 313 | |——fpm_log.c 314 | |——fpm_log.h 315 | |——fpm_main.c 316 | |——fpm_php.c 317 | |——fpm_php.h 318 | |——fpm_php_trace.c 319 | |——fpm_php_trace.h 320 | |——fpm_process_ctl.c 321 | |——fpm_process_ctl.h 322 | |——fpm_request.c 323 | |——fpm_request.h 324 | |——fpm_scoreboard.c 325 | |——fpm_scoreboard.h 326 | |——fpm_shm.c 327 | |——fpm_shm.h 328 | |——fpm_signals.c 329 | |——fpm_signals.h 330 | |——fpm_sockets.c 331 | |——fpm_sockets.h 332 | |——fpm_status.c 333 | |——fpm_status.h 334 | |——fpm_stdio.c 335 | |——fpm_stdio.h 336 | |——fpm_str.h 337 | |——fpm_systemd.c 338 | |——fpm_systemd.h 339 | |——fpm_trace.c 340 | |——fpm_trace.h 341 | |——fpm_trace_mach.c 342 | |——fpm_trace_pread.c 343 | |——fpm_trace_ptrace.c 344 | |——fpm_unix.c 345 | |——fpm_unix.h 346 | |——fpm_worker_pool.c 347 | |——fpm_worker_pool.h 348 | |——zlog.c 349 | |——zlog.h 350 | |——tests: 351 | |—— 352 | |——Makefile.frag 353 | |——config.m4 354 | |——init.d.php-fpm.in 355 | |——php-fpm.8.in 356 | |——php-fpm.conf.in 357 | |——php-fpm.service.in 358 | |——status.html.in 359 | |——www.conf.in 360 | |——litespeed: 361 | |—— 362 | |——phpdbg: 363 | |—— 364 | scripts: 365 | |——dev: 366 | |—— 367 | |——man1: 368 | |—— 369 | |——Makefile.frag 370 | |——php-config.in 371 | |——phpize.in 372 | |——phpize.m4 373 | tests: 374 | |—— 375 | buildconf 376 | configure.ac 377 | php.ini-development 378 | php.ini-production 379 | run-tests.php 380 | 381 | ``` 382 | 383 | 384 | 385 | ## 一.PHP7->PHP5 写法用法变更 386 | 387 | 1.脚本使用何种类型控制方式的声明： 388 | 389 | 主要有两种方式，一种是严格类型模式，一种是弱类型模式 390 | 391 | `declare(strict_types = 1)` : 严格类型模式 392 | 393 | `declare(strict_types = 0)` : 弱类型模式 394 | 395 | 2.`??` 和 `<=>` 运算符 396 | 397 | `??` : $a ?? $b 等同于以往的这种写法 —— isset($a) ? $a : $b; (注意区分 `?:` 和 `??`) 398 | 399 | `<=>` : $var = $a <=> $b，当 $a > $b 时，$var = 1. 当 $a = $b 时，$var = 0. 当 $a < $b 时，$var = -1. 400 | 401 | 3.define 不只能定义单值常量，也能定义数组型常量。 402 | 403 | ```php 404 | define('a', [ 405 | 1, 406 | 2, 407 | 4, 408 | 5, 409 | ]); 410 | echo a[3]; // 5 411 | ``` 412 | 413 | 5.支持定义匿名类 414 | 415 | 6.为已存在的类绑定一个匿名函数的新版写法： 416 | 417 | ```php 418 | x; 428 | return $this->foo(); 429 | } 430 | $bindFunc = $newFunc->bindTo(new A, 'A'); 431 | echo $bindFunc(); // 'aaaa''bbbb' 432 | 433 | // 新版写法 434 | echo $newFunc->call(new A); // 'aaaa''bbbb' 435 | ``` 436 | 437 | 7.新的伪随机数生成器 438 | 439 | PHP7 引入了几个 CSPRNG 函数来提供一种简单的机制，以生成密码学上强壮的随机数。（具体差异后面再补充） 440 | 441 | random_bytes() —— 生成伪随机字符串 442 | 443 | random_int() —— 生成伪随机整数。 444 | 445 | 8.use 语句，可以一次引入同一个 namespace 下的多个类 446 | 447 | `use A\{classB, classC, classD[ as E]}` 448 | 449 | 9.session函数用法变化 450 | 451 | ```php 452 | 1.session_start() 可定义数组参数 453 | session_start([ 454 | 'cache_limiter' => 'private', 455 | 'read_and_close' => true, 456 | ]); 457 | 2.引入一个新的 php 配置 session.lazy_write，默认此配置为 true，代表只有 session 数据发生变化时才写入。 458 | ``` 459 | 460 | 10.移除部分扩展：`ereg`, `mssql`, `mysql`, `sybase_ct` 461 | 462 | ## 二.Crafts:（此为零散碎片思路整理，仅供后续整理系统化提供参考。中有纰漏恳请指出） 463 | 464 | 1.为什么 php7 比 php5 性能有大幅提升？ 465 | 466 | 1）变量存储字节减少，减少内存占用，提升了变量操作速度。 467 | 468 | 2）改善数组结构，数组元素和哈希映射表被分配在同一片内存里，降低了内存占用，提升了 cpu 缓存的命中率 469 | 470 | 3）改善函数的调用机制，通过优化参数传递的环节，减少了一些指令执行，提高 cpu 的执行效率 471 | 472 | --------------------------------------------------------------------------------