{"id":1615,"date":"2022-01-28T16:02:19","date_gmt":"2022-01-28T08:02:19","guid":{"rendered":"https:\/\/www.siediyer.cn\/?p=1615"},"modified":"2022-01-28T16:02:19","modified_gmt":"2022-01-28T08:02:19","slug":"php%e5%ae%88%e6%8a%a4%e8%bf%9b%e7%a8%8b%e7%9a%84%e4%b8%a4%e7%a7%8d%e5%b8%b8%e8%a7%81%e5%ae%9e%e7%8e%b0%e6%96%b9%e5%bc%8f%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/www.siediyer.cn\/?p=1615","title":{"rendered":"PHP\u5b88\u62a4\u8fdb\u7a0b\u7684\u4e24\u79cd\u5e38\u89c1\u5b9e\u73b0\u65b9\u5f0f\u8be6\u89e3"},"content":{"rendered":"

\u672c\u6587\u5b9e\u4f8b\u8bb2\u8ff0\u4e86PHP\u5b88\u62a4\u8fdb\u7a0b\u7684\u4e24\u79cd\u5e38\u89c1\u5b9e\u73b0\u65b9\u5f0f\u3002\u5206\u4eab\u7ed9\u5927\u5bb6\u4f9b\u5927\u5bb6\u53c2\u8003\uff0c\u5177\u4f53\u5982\u4e0b\uff1a<\/p>\n

\u7b2c\u4e00\u79cd\u65b9\u5f0f\uff0c\u501f\u52a9 nohup \u548c &\u00a0 \u914d\u5408\u4f7f\u7528\u3002<\/strong><\/p>\n

\u5728\u547d\u4ee4\u540e\u9762\u52a0\u4e0a & \u7b26\u53f7\uff0c \u53ef\u4ee5\u8ba9\u542f\u52a8\u7684\u8fdb\u7a0b\u8f6c\u5230\u540e\u53f0\u8fd0\u884c\uff0c\u800c\u4e0d\u5360\u7528\u63a7\u5236\u53f0\uff0c\u63a7\u5236\u53f0\u8fd8\u53ef\u4ee5\u518d\u8fd0\u884c\u5176\u4ed6\u547d\u4ee4\uff0c\u8fd9\u91cc\u6211\u4f7f\u7528\u4e00\u4e2awhile\u6b7b\u5faa\u73af\u6765\u505a\u6f14\u793a\uff0c\u4ee3\u7801\u5982\u4e0b<\/p>\n

<?php\r\nwhile(true){\r\n    echo time().PHP_EOL;\r\n    sleep(3);\r\n}\r\n\r\n<\/pre>\n
\u7528 & \u65b9\u5f0f\u6765\u542f\u52a8\u8be5\u8fdb\u7a0b<\/p>\n
[root@localhost php]# php deadloop.php &\r\n[1] 3454\r\n[root@localhost php]# ps aux | grep 3454\r\nroot   3454 0.0 0.8 284544 8452 pts\/0  T  18:06  0:00 php deadloop.php\r\nroot   3456 0.0 0.0 103316  896 pts\/0  S+  18:08  0:00 grep 3454\r\n[1]+ Stopped         php deadloop.php\r\n[root@localhost php]#\r\n\r\n<\/pre>\n
\u53ef\u4ee5\u770b\u5230\u8be5\u8fdb\u7a0b\u5e76\u672a\u5360\u7528\u63a7\u5236\u53f0\uff0c\u63a7\u5236\u53f0\u8fd8\u53ef\u4ee5\u8fd0\u884c\u5176\u4ed6\u547d\u4ee4\uff0c\u8fd9\u65f6\u6211\u4eec\u8fd8\u53ef\u4ee5\u901a\u8fc7 fg \u547d\u4ee4\u8ba9\u8fdb\u7a0b\u6062\u590d\u5230\u666e\u901a\u5360\u7528\u63a7\u5236\u53f0\u7684\u6a21\u5f0f\u3002<\/p>\n
[root@localhost php]# fg\r\nphp deadloop.php\r\n1470996682\r\n1470996685\r\n1470996688\r\n1470996691\r\n\r\n<\/pre>\n
\u4ee5\u4e0a\u5c31\u662f\u5173\u4e8e & \u547d\u4ee4\u7b80\u5355\u4ecb\u7ecd<\/p>\n
\u4e0b\u9762\u518d\u6765\u770b\u53e6\u4e00\u4e2a\u547d\u4ee4 nohup<\/p>\n
\u5728\u547d\u4ee4\u4e4b\u524d\u52a0\u4e0a nohup \uff0c\u542f\u52a8\u7684\u8fdb\u7a0b\u5c06\u4f1a\u5ffd\u7565linux\u7684\u6302\u8d77\u4fe1\u53f7 (SIGHUP)\uff0c\u90a3\u4ec0\u4e48\u60c5\u51b5\u4e0b\u4f1a\u89e6\u53d1linux\u4e0bSIGHUP\u4fe1\u53f7\u5462\uff0c\u4ee5\u4e0b\u5185\u5bb9\u6458\u81ea\u767e\u5ea6\u767e\u79d1\uff1a<\/p>\n
SIGHUP\u4f1a\u5728\u4ee5\u4e0b3\u79cd\u60c5\u51b5\u4e0b\u88ab\u53d1\u9001\u7ed9\u76f8\u5e94\u7684\u8fdb\u7a0b\uff1a<\/strong><\/p>\n
1\u3001\u7ec8\u7aef\u5173\u95ed\u65f6\uff0c\u8be5\u4fe1\u53f7\u88ab\u53d1\u9001\u5230session\u9996\u8fdb\u7a0b\u4ee5\u53ca\u4f5c\u4e3ajob\u63d0\u4ea4\u7684\u8fdb\u7a0b\uff08\u5373\u7528 & \u7b26\u53f7\u63d0\u4ea4\u7684\u8fdb\u7a0b\uff09
\n2\u3001session\u9996\u8fdb\u7a0b\u9000\u51fa\u65f6\uff0c\u8be5\u4fe1\u53f7\u88ab\u53d1\u9001\u5230\u8be5session\u4e2d\u7684\u524d\u53f0\u8fdb\u7a0b\u7ec4\u4e2d\u7684\u6bcf\u4e00\u4e2a\u8fdb\u7a0b
\n3\u3001\u82e5\u7236\u8fdb\u7a0b\u9000\u51fa\u5bfc\u81f4\u8fdb\u7a0b\u7ec4\u6210\u4e3a\u5b64\u513f\u8fdb\u7a0b\u7ec4\uff0c\u4e14\u8be5\u8fdb\u7a0b\u7ec4\u4e2d\u6709\u8fdb\u7a0b\u5904\u4e8e\u505c\u6b62\u72b6\u6001\uff08\u6536\u5230SIGSTOP\u6216SIGTSTP\u4fe1\u53f7\uff09\uff0c\u8be5\u4fe1\u53f7\u4f1a\u88ab\u53d1\u9001\u5230\u8be5\u8fdb\u7a0b\u7ec4\u4e2d\u7684\u6bcf\u4e00\u4e2a\u8fdb\u7a0b\u3002<\/p>\n
\u7ed3\u5408 1\u548c2 \u6211\u4eec\u77e5\u9053\uff0c\u4e0d\u7ba1\u662f\u5426\u4ee5 & (job\u65b9\u5f0f)\u542f\u52a8\u7684\u8fdb\u7a0b\uff0c\u5173\u95ed\u7ec8\u7aef\u65f6\u90fd\u4f1a\u6536\u5230\u00a0 SIGHUP \u4fe1\u53f7 \uff0c\u90a3\u4e48\u8fdb\u7a0b\u6536\u5230 SIGHUP \u4fe1\u53f7\u4f1a\u5982\u4f55\u5904\u7406\u5462\uff0c\u770b\u540c\u6837\u662f\u6458\u81ea\u767e\u5ea6\u767e\u79d1\u7684\u4e00\u53e5\u8bdd<\/p>\n
\u7cfb\u7edf\u5bf9SIGHUP\u4fe1\u53f7\u7684\u9ed8\u8ba4\u5904\u7406\u662f\u7ec8\u6b62\u6536\u5230\u8be5\u4fe1\u53f7\u7684\u8fdb\u7a0b\u3002\u6240\u4ee5\u82e5\u7a0b\u5e8f\u4e2d\u6ca1\u6709\u6355\u6349\u8be5\u4fe1\u53f7\uff0c\u5f53\u6536\u5230\u8be5\u4fe1\u53f7\u65f6\uff0c\u8fdb\u7a0b\u5c31\u4f1a\u9000\u51fa\u3002<\/p>\n
\u4e5f\u5c31\u662f\u8bf4\u5173\u95ed\u7ec8\u7aef\u8fdb\u7a0b\u4f1a\u6536\u5230SIGHUP\u4fe1\u53f7\uff0c\u800c\u8be5\u4fe1\u53f7\u7684\u9ed8\u8ba4\u5904\u7406\u65b9\u5f0f\u5c31\u662f\u7ed3\u675f\u6389\u8be5\u8fdb\u7a0b\uff0c\u5f53\u7136 \u6211\u4eec\u4e5f\u53ef\u4ee5\u81ea\u5df1\u5904\u7406\u8be5\u4fe1\u53f7\uff0c\u6216\u8005\u5ffd\u7565\u5b83\uff0c\u540c\u6837\u662f\u4e0a\u8ff0\u5faa\u73af\u7684\u4f8b\u5b50\uff0c\u6211\u4eec\u7a0d\u52a0\u6539\u8fdb<\/p>\n
<?php\r\ndeclare(ticks = 1);\r\npcntl_signal(SIGHUP, function(){\r\n    \/\/ \u8fd9\u5730\u65b9\u5904\u7406\u4fe1\u53f7\u7684\u65b9\u5f0f\u6211\u4eec\u53ea\u662f\u7b80\u5355\u7684\u5199\u5165\u4e00\u53e5\u65e5\u5fd7\u5230\u6587\u4ef6\u4e2d\r\n    file_put_contents('logs.txt', 'pid : ' . posix_getpid() . ' receive SIGHUP \u4fe1\u53f7' . PHP_EOL);\r\n});\r\nwhile(true){\r\n    echo time().PHP_EOL;\r\n    sleep(3);\r\n}\r\n\r\n<\/pre>\n
\u6211\u4eec\u5927\u53ef\u4e0d\u5fc5\u8fd9\u4e48\u9ebb\u70e6\uff0c\u53ea\u9700\u8981\u4f7f\u7528linux\u63d0\u4f9b\u7ed9\u6211\u4eec\u7684nohup\u547d\u4ee4\uff0c\u4f46\u6211\u4eec\u4f7f\u7528nohup\u542f\u52a8\u8fdb\u7a0b\u65f6\uff0c\u5173\u95ed\u7ec8\u7aef\uff0c\u8fdb\u7a0b\u4f1a\u5ffd\u7565SIGHUP\u4fe1\u53f7\uff0c\u4e5f\u5c31\u4e0d\u4f1a\u9000\u51fa\u4e86\uff0c\u9996\u5148\u53bb\u6389\u521a\u624d\u7684\u4fe1\u53f7\u5904\u7406\u4ee3\u7801\u3002\u7136\u540enohup \u8fd0\u884c\u3002<\/p>\n
[root@localhost php]# nohup php deadloop.php\r\n<\/pre>\n
nohup: \u5ffd\u7565\u8f93\u5165\u5e76\u628a\u8f93\u51fa\u8ffd\u52a0\u5230”nohup.out”<\/p>\n
\u5e76\u4e14nohup\u9ed8\u8ba4\u4f1a\u628a\u7a0b\u5e8f\u7684\u8f93\u51fa\u91cd\u5b9a\u5411\u5230\u5f53\u524d\u76ee\u5f55\u4e0b\u7684nohup.out\u6587\u4ef6\uff0c\u5982\u679c\u6ca1\u6709\u53ef\u5199\u6743\u9650\uff0c\u5219\u5199\u5165 $homepath\/nohup.out<\/p>\n
[root@localhost php]# ls\r\ncmd.sh deadloop.php getPhoto.php nohup.out pics\r\n[root@localhost php]# tail -f nohup.out\r\n1470999772\r\n1470999775\r\n1470999778\r\n1470999781\r\n1470999784\r\n1470999787\r\n1470999790\r\n1470999793\r\n1470999796\r\n1470999799\r\n1470999802\r\n\r\n<\/pre>\n
\u6b64\u65f6 \u5173\u95ed\u7ec8\u7aef\uff0c\u8fdb\u7a0b\u4e0d\u4f1a\u7ed3\u675f\uff0c\u800c\u662f\u53d8\u6210\u4e86\u5b64\u513f\u8fdb\u7a0b\uff08ppid=1\uff09\uff0c\u56e0\u4e3a\u521b\u5efa\u5b83\u7684\u7236\u8fdb\u7a0b\u9000\u51fa\u4e86\u3002<\/p>\n
[root@localhost ~]# ps -ef | grep 3554\r\nroot   3554 3497 0 19:09 pts\/0  00:00:00 php deadloop.php\r\nroot   3575 3557 0 19:10 pts\/1  00:00:00 grep 3554\r\n[root@localhost ~]# ps -ef | grep 3554\r\nroot   3554   1 0 19:09 ?    00:00:00 php deadloop.php\r\nroot   3577 3557 0 19:10 pts\/1  00:00:00 grep 3554\r\n[root@localhost ~]#\r\n\r\n<\/pre>\n
\u5176\u4e2d >logs.txt \u91cd\u5b9a\u5411\u6807\u51c6\u8f93\u51fa\uff0c2>error.txt \u91cd\u5b9a\u5411\u6807\u51c6\u9519\u8bef\u8f93\u51fa\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662f\u5173\u4e8e\u7b2c\u4e00\u79cd\u5b9e\u73b0\u65b9\u5f0f\u7684\u4ecb\u7ecd\u3002<\/p>\n
\u7b2c\u4e8c\u79cd\u5b9e\u73b0\u65b9\u5f0f\u5c31\u662f\u6839\u636e\u5b88\u62a4\u8fdb\u7a0b\u7684\u89c4\u5219\u548c\u7279\u70b9\u901a\u8fc7\u4ee3\u7801\u6765\u5b9e\u73b0<\/strong>\uff0c\u5b88\u62a4\u8fdb\u7a0b\u6700\u5927\u7684\u7279\u70b9\u5c31\u662f\u8131\u79bb\u4e86\u7528\u6237\u7ec8\u7aef\u548c\u4f1a\u8bdd\uff0c\u4e0b\u9762\u662f\u5b9e\u73b0\u7684\u4ee3\u7801\uff0c\u5173\u952e\u5730\u65b9\u8fdb\u884c\u4e86\u6ce8\u91ca\u3002<\/p>\n
<?php\r\n$pid = pcntl_fork();\r\nif ($pid == -1)\r\n{\r\n  throw new Exception('fork\u5b50\u8fdb\u7a0b\u5931\u8d25');\r\n}\r\nelseif ($pid > 0)\r\n{\r\n  \/\/\u7236\u8fdb\u7a0b\u9000\u51fa,\u5b50\u8fdb\u7a0b\u53d8\u6210\u5b64\u513f\u8fdb\u7a0b\u88ab1\u53f7\u8fdb\u7a0b\u6536\u517b\uff0c\u8fdb\u7a0b\u8131\u79bb\u7ec8\u7aef\r\n  exit(0);\r\n}\r\n\/\/ \u6700\u91cd\u8981\u7684\u4e00\u6b65\uff0c\u8ba9\u8be5\u8fdb\u7a0b\u8131\u79bb\u4e4b\u524d\u7684\u4f1a\u8bdd\uff0c\u7ec8\u7aef\uff0c\u8fdb\u7a0b\u7ec4\u7684\u63a7\u5236\r\nposix_setsid();\r\n\/\/ \u4fee\u6539\u5f53\u524d\u8fdb\u7a0b\u7684\u5de5\u4f5c\u76ee\u5f55\uff0c\u7531\u4e8e\u5b50\u8fdb\u7a0b\u4f1a\u7ee7\u627f\u7236\u8fdb\u7a0b\u7684\u5de5\u4f5c\u76ee\u5f55\uff0c\u4fee\u6539\u5de5\u4f5c\u76ee\u5f55\u4ee5\u91ca\u653e\u5bf9\u7236\u8fdb\u7a0b\u5de5\u4f5c\u76ee\u5f55\u7684\u5360\u7528\u3002\r\nchdir('\/');\r\n\/*\r\n * \u901a\u8fc7\u4e0a\u4e00\u6b65\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u65b0\u7684\u4f1a\u8bdd\u7ec4\u957f\uff0c\u8fdb\u7a0b\u7ec4\u957f\uff0c\u4e14\u8131\u79bb\u4e86\u7ec8\u7aef\uff0c\u4f46\u662f\u4f1a\u8bdd\u7ec4\u957f\u53ef\u4ee5\u7533\u8bf7\u91cd\u65b0\u6253\u5f00\u4e00\u4e2a\u7ec8\u7aef\uff0c\u4e3a\u4e86\u907f\u514d\r\n * \u8fd9\u79cd\u60c5\u51b5\uff0c\u6211\u4eec\u518d\u6b21\u521b\u5efa\u4e00\u4e2a\u5b50\u8fdb\u7a0b\uff0c\u5e76\u9000\u51fa\u5f53\u524d\u8fdb\u7a0b\uff0c\u8fd9\u6837\u8fd0\u884c\u7684\u8fdb\u7a0b\u5c31\u4e0d\u518d\u662f\u4f1a\u8bdd\u7ec4\u957f\u3002\r\n *\/\r\n$pid = pcntl_fork();\r\nif ($pid == -1)\r\n{\r\n  throw new Exception('fork\u5b50\u8fdb\u7a0b\u5931\u8d25');\r\n}\r\nelseif ($pid > 0)\r\n{\r\n  \/\/ \u518d\u4e00\u6b21\u9000\u51fa\u7236\u8fdb\u7a0b\uff0c\u5b50\u8fdb\u7a0b\u6210\u4e3a\u6700\u7ec8\u7684\u5b88\u62a4\u8fdb\u7a0b\r\n  exit(0);\r\n}\r\n\/\/ \u7531\u4e8e\u5b88\u62a4\u8fdb\u7a0b\u7528\u4e0d\u5230\u6807\u51c6\u8f93\u5165\u8f93\u51fa\uff0c\u5173\u95ed\u6807\u51c6\u8f93\u5165\uff0c\u8f93\u51fa\uff0c\u9519\u8bef\u8f93\u51fa\u63cf\u8ff0\u7b26\r\nfclose(STDIN);\r\nfclose(STDOUT);\r\nfclose(STDERR);\r\n\/*\r\n * \u5904\u7406\u4e1a\u52a1\u4ee3\u7801\r\n *\/\r\nwhile(TRUE)\r\n{\r\n  file_put_contents('log.txt', time().PHP_EOL, FILE_APPEND);\r\n  sleep(5);\r\n}\r\n\r\n<\/pre>\n
 <\/p>\n","protected":false},"excerpt":{"rendered":"
\u672c\u6587\u5b9e\u4f8b\u8bb2\u8ff0\u4e86PHP\u5b88\u62a4\u8fdb\u7a0b\u7684\u4e24\u79cd\u5e38\u89c1\u5b9e\u73b0\u65b9\u5f0f\u3002\u5206\u4eab\u7ed9\u5927\u5bb6\u4f9b\u5927\u5bb6\u53c2\u8003\uff0c\u5177\u4f53\u5982\u4e0b\uff1a \u7b2c\u4e00\u79cd\u65b9\u5f0f\uff0c\u501f\u52a9 nohup […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[117],"class_list":["post-1615","post","type-post","status-publish","format-standard","hentry","category-php","tag-php"],"_links":{"self":[{"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=\/wp\/v2\/posts\/1615","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1615"}],"version-history":[{"count":1,"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=\/wp\/v2\/posts\/1615\/revisions"}],"predecessor-version":[{"id":1616,"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=\/wp\/v2\/posts\/1615\/revisions\/1616"}],"wp:attachment":[{"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1615"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1615"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1615"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}