他妈的，累了

• https://www.cnblogs.com/yunchen/p/14865608.html

• https://wenku.baidu.com/view/ab46f9cb49fe04a1b0717fd5360cba1aa8118c60.html

• https://blog.csdn.net/zzf_forgot/article/details/94454237

• https://blog.csdn.net/qq_41617901/article/details/118340581

• https://www.php.cn/oracle/488254.html

• https://www.cnblogs.com/judongju-alvin/p/15540768.html

• https://blog.csdn.net/qq_41894426/article/details/107816379

• https://wenku.baidu.com/view/80eef6ccfbc75fbfc77da26925c52cc58ad69044.html

• http://www.27ba.com/post/725.html