1.PHP — 

2.PHPCon PPT https://github.com/ThinkDevelopers/PHPConChina PPT PHPCon 

3.PHP https://segmentfault.com/a/1190000012028295 

4. PHP PHP is a popular general-purpose scripting language that is especially suited to web development. 

5.PHP /C/C++ nginx java/c#/go service AI PHP or 

6. PHPer 1. 2. 3. 4. 5. 

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8.PHP vars tmps args str_repeat vars tmps args foo 

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10.PHP or opcache 

11.PHP unset null 

12. $var 0 refcount 0 • composer gc_disable() 10000 • gc • gc_disable() 

13.FPM —php_request_shutdown array object string heap/stack zval function class_entry extensio PHP emalloc/efree* RSHUTDOWN=> php_request_shutdown zend MM emalloc*(ext efree gc_disable() ) operate system 

14. php_request_shutdown 1.max_request (1) (base ) (2) (3) (4) (opcache,ext minits) 2. unset 

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19.—FPM swoole 

20. 2. mysql PHP (e.g php7_warpper) : 

21. —FPM FPM worker accept worker worker master prefork worker worker worker close 

22. —Swoole swoole(base) accept worker worker worker master prefork worker reactor worker worker close 

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24. strace -p 123456 lsof -p 123456 fd strace PHP 

25.swoole/FPM ptrace 

26.mysql 

27.profile —Xhprof 

28. profile profile PHP PHP 

29.c profile —callgrind https://www.bo56.com