{"id":770,"date":"2023-03-10T13:10:45","date_gmt":"2023-03-10T05:10:45","guid":{"rendered":"http:\/\/blog.nonot.cn\/?p=770"},"modified":"2024-07-08T12:43:35","modified_gmt":"2024-07-08T04:43:35","slug":"php%e8%ae%be%e7%bd%aesession%e7%9a%84%e7%94%9f%e5%ad%98%e5%91%a8%e6%9c%9f","status":"publish","type":"post","link":"https:\/\/blog.nonot.cn\/index.php\/2023\/03\/10\/php%e8%ae%be%e7%bd%aesession%e7%9a%84%e7%94%9f%e5%ad%98%e5%91%a8%e6%9c%9f\/","title":{"rendered":"php\u8bbe\u7f6esession\u7684\u751f\u5b58\u5468\u671f"},"content":{"rendered":"

\u9996\u5148\u8bf4\u4e00\u4e0bsession\u7684\u521b\u5efa\u7684\u5f00\u59cb\u5230\u7ed3\u675f\u7684\u8fc7\u7a0b\u3002<\/p>\n

\u5f53\u7a0b\u5e8f\u9700\u8981\u4e3a\u67d0\u4e2a\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42\u521b\u5efa\u4e00\u4e2a session \u7684\u65f6\u5019\uff0c\u670d\u52a1\u5668\u9996\u5148\u4f1a\u68c0\u67e5\u8fd9\u4e2a\u5ba2\u6237\u7aef\u662f\u5426\u5df2\u7ecf\u5305\u542b\u4e86\u4e00\u4e2a session \u6807\u8bc6\uff0c\u8fd9\u4e2a\u6211\u4eec\u79f0\u4e3a session id\uff08\u83b7\u53d6\u65b9\u6cd5\u4e3a session_id() \uff09\uff0c\u5982\u679c\u5df2\u5305\u542b\u4e00\u4e2a session id \u5219\u8bf4\u660e\u6b64\u5ba2\u6237\u7aef\u4e4b\u524d\u5df2\u7ecf\u521b\u5efa\u8fc7 session\uff0c\u670d\u52a1\u5668\u5219\u6309\u7167 session id \u628a\u8fd9\u4e2a session \u4e2d\u7684\u503c\u68c0\u7d22\u51fa\u6765\uff0c\u5982\u679c\u5ba2\u6237\u7aef\u4e0d\u5305\u542b session id\uff0c\u8bf4\u660e\u6b64\u5ba2\u6237\u7aef\u7b2c\u4e00\u6b21\u8bf7\u6c42\u670d\u52a1\u5668\u6216\u624b\u52a8\u6e05\u9664\u8fc7\u7f13\u5b58\u6587\u4ef6\uff0c\u5219\u4e3a\u6b64\u5ba2\u6237\u7aef\u521b\u5efa\u4e00\u4e2a session \u5e76\u4e14\u751f\u6210\u4e00\u4e2a\u4e0e\u6b64 session \u76f8\u5173\u8054\u7684 session id\uff0c\u4e00\u822c\u6765\u8bf4\uff0csession id \u7684\u503c\u662f\u4e0d\u4f1a\u91cd\u590d\u7684\uff0c\u5e76\u4e14\u52a0\u5bc6\u7684\u5b57\u7b26\u4e32\uff0c\u8fd9\u4e2a session id \u5c06\u88ab\u5728\u672c\u6b21\u54cd\u5e94\u4e2d\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\u4fdd\u5b58\u3002<\/p>\n

session \u5728\u4f55\u65f6\u88ab\u521b\u5efa \uff1f<\/strong><\/p>\n

\u901a\u5e38\uff08\u662f\u6307\u901a\u5e38\uff09\u662f\u5728\u6d4f\u89c8\u5668\u5411\u670d\u52a1\u5668\u7aef\u7b2c\u4e00\u6b21\u8bf7\u6c42\u65f6\u88ab\u521b\u5efa\uff0c\u5e76\u4e14\u5b83\u4f1a\u5360\u7528\u4e00\u5b9a\u7684\u5185\u5b58\u7a7a\u95f4\uff0c\u56e0\u6b64\u5728\u4e0d\u5fc5\u8981\u7684\u60c5\u51b5\u4e0b\uff0c\u5c3d\u6700\u5173\u95ed session \u3002<\/p>\n

session \u4f55\u65f6\u88ab\u5220\u9664 \uff1f<\/strong><\/p>\n

\u901a\u5e38\u60c5\u51b5\u4e0b\uff0csession \u5728\u4f1a\u5728\u8fd9\u51e0\u79cd\u60c5\u51b5\u4e0b\u88ab\u5220\u9664\uff1a<\/p>\n

\u4e00\u662f\u4f7f\u7528 session_destroy() \u91cd\u7f6e\u51fd\u6570\u624b\u52a8\u5220\u9664\uff1b<\/p>\n

\u4e8c\u662f session \u7684\u4e0a\u6b21\u6d3b\u52a8\u65f6\u95f4\u8ddd\u79bb\u5f53\u524d\u65f6\u95f4\u7684\u95f4\u9694\u8d85\u8fc7\u4e86 session \u7684\u8d85\u65f6\u8bbe\u7f6e\u7684\u65f6\u95f4\uff1b\u4e09\u662f\u670d\u52a1\u5668\u8fdb\u7a0b\u88ab\u505c\u6b62\u3002<\/p>\n

\u600e\u4e48\u5728\u6d4f\u89c8\u5668\u5173\u95ed\u65f6\u5220\u9664 session \uff1f<\/strong><\/p>\n

\u7406\u8bba\u4e0a\u6765\u8bf4\uff0c\u662f\u505a\u4e0d\u5230\u8fd9\u4e00\u70b9\uff0chttp\u662f\u4e00\u79cd\u65e0\u72b6\u6001\u534f\u8bae\uff0c\u56e0\u6b64\u670d\u52a1\u5668\u4e0d\u77e5\u9053\u5ba2\u6237\u7aef\u4ec0\u4e48\u65f6\u5019\u5173\u6389\u7684\u6d4f\u89c8\u5668\uff0c\u5e76\u4e14PHP\u4e5f\u6ca1\u6709\u4e00\u4e2a\u5173\u76f8\u7684\u51fd\u6570\u6765\u83b7\u53d6\u6b64\u9879\u4fe1\u606f\uff0c\u4f46\u8fd9\u4e2a\u95ee\u9898\u8fd8\u53ef\u4ee5\u5f97\u5230\u89e3\u51b3\uff0c\u5c31\u662f\u4f7f\u7528 \u7f51\u9875\u7279\u6548 \u4ee3\u7801 window.oncolose \u6765\u76d1\u89c6\u6d4f\u89c8\u5668\u7684\u5173\u95ed\u52a8\u4f5c\uff0c\u7136\u540e\u7528Ajax\u5411\u670d\u52a1\u5668\u7aef\u53d1\u9001\u4e00\u4e2a\u8bf7\u6c42\u6765\u5220\u9664 session \uff0c\u4f46\u8fd9\u4e2a\u529e\u6cd5\u4e5f\u5e76\u4e0d\u4f1a\u5b8c\u5168\u89e3\u51b3\u95ee\u9898\uff0c\u539f\u56e0\u662f\u5728\u6709\u4e9b\u60c5\u51b5\u4e0b\u6bd4\u5982\u6d4f\u89c8\u5668\u5d29\u6e83\u3001\u7a81\u7136\u65ad\u7535\u3001\u7528\u6237\u6b7b\u673a\u7b49\u8fd9\u4e9b\u65f6\u5019\u5e76\u4e0d\u80fd\u4f5c\u51fa\u53cd\u5e94\u3002<\/p>\n

\u5982\u4f55\u8bbe\u7f6e\u4f7fsession\u5728\u4e00\u6bb5\u65f6\u95f4\u8fc7\u540e\u81ea\u52a8\u5931\u6548\uff08\u5220\u9664\uff09\uff1f<\/strong><\/p>\n

session_start()\u662fsession\u673a\u5236\u7684\u5f00\u59cb\uff0c\u5b83\u6709\u4e00\u5b9a\u6982\u7387\u5f00\u542f\u5783\u573e\u56de\u6536,\u56e0\u4e3asession\u662f\u5b58\u653e\u5728\u6587\u4ef6\u4e2d\uff0cPHP\u81ea\u8eab\u7684\u5783\u573e\u56de\u6536\u662f\u65e0\u6548\u7684\uff0cSESSION\u7684\u56de\u6536\uff08\u5220\u9664\uff09\u662f\u8981\u5220\u6587\u4ef6\u7684\uff0c\u8fd9\u4e2a\u6982\u7387\u662f\u6839\u636ephp.ini\u7684\u914d\u7f6e\u51b3\u5b9a\u7684\uff0c\u4f46\u662f\u6709\u7684\u7cfb\u7edf\u662f session.gc_probability = 0\uff0c\u8fd9\u4e5f\u5c31\u662f\u8bf4\u6982\u7387\u662f0\uff0c\u800c\u662f\u901a\u8fc7cron\u811a\u672c\u6765\u5b9e\u73b0\u5783\u573e\u56de\u6536\uff08\u5373\u5220\u9664session\uff09\u3002<\/p>\n

PHP\u4e2d\u7684session\u6709\u6548\u671f\u9ed8\u8ba4\u662f1440\u79d2\uff0824\u5206\u949f\uff0c\u6ce8\uff1aphp5\u91cc\u9ed8\u8ba4\u7684\u662f180\u5206\u3011\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u5ba2\u6237\u7aef\u8d85\u8fc724\u5206\u949f\u6ca1\u6709\u5237\u65b0\uff0c\u5f53\u524dsession\u5c31\u4f1a\u5931\u6548\u3002\u5f88\u660e\u663e\uff0c\u8fd9\u662f\u4e0d\u80fd\u6ee1\u8db3\u9700\u8981\u7684\u3002<\/p>\n

\u4e00\u4e2a\u5df2\u77e5\u7ba1\u7528\u7684\u65b9\u6cd5\u662f\uff0c\u4f7f\u7528session_set_save_handler\uff0c\u63a5\u7ba1\u6240\u6709\u7684session\u7ba1\u7406\u5de5\u4f5c\uff0c\u4e00\u822c\u662f\u628asession\u4fe1\u606f\u5b58\u50a8\u5230\u6570\u636e\u5e93\uff0c\u8fd9\u6837\u53ef\u4ee5\u901a\u8fc7SQL\u8bed\u53e5\u6765\u5220\u9664\u6240\u6709\u8fc7\u671f\u7684session\uff0c\u7cbe\u786e\u5730\u63a7\u5236session\u7684\u6709\u6548\u671f\u3002\u8fd9\u4e5f\u662f\u57fa\u4e8ePHP\u7684\u5927\u578b\u7f51\u7ad9\u5e38\u7528\u7684\u65b9\u6cd5\u3002\u4f46\u662f\uff0c\u4e00\u822c\u7684\u5c0f\u578b\u7f51\u7ad9\uff0c\u4f3c\u4e4e\u6ca1\u6709\u5fc5\u8981\u8fd9\u4e48\u52b3\u5e08\u52a8\u4f17\u3002<\/p>\n

\u4f46\u662f\u4e00\u822c\u7684Session\u7684\u751f\u547d\u671f\u6709\u9650\uff0c\u5982\u679c\u7528\u6237\u5173\u95ed\u4e86\u6d4f\u89c8\u5668\uff0c\u5c31\u4e0d\u80fd\u4fdd\u5b58Session\u7684\u53d8\u91cf\u4e86\uff01\u90a3\u4e48\u600e\u4e48\u6837\u53ef\u4ee5\u5b9e\u73b0Session\u7684\u6c38\u4e45\u751f\u547d\u671f\u5462\uff1f<\/p>\n

\u5927\u5bb6\u77e5\u9053\uff0cSession\u50a8\u5b58\u5728\u670d\u52a1\u5668\u7aef\uff0c\u6839\u636e\u5ba2\u6237\u7aef\u63d0\u4f9b\u7684SessionID\u6765\u5f97\u5230\u8fd9\u4e2a\u7528\u6237\u7684\u6587\u4ef6\uff0c\u7136\u540e\u8bfb\u53d6\u6587\u4ef6\uff0c\u53d6\u5f97\u53d8\u91cf\u7684\u503c\uff0cSessionID\u53ef\u4ee5\u4f7f\u7528\u5ba2\u6237\u7aef\u7684Cookie\u6216\u8005Http1.1\u534f\u8bae\u7684Query_String\uff08\u5c31\u662f\u8bbf\u95ee\u7684URL\u7684\u201c?\u201d\u540e\u9762\u7684\u90e8\u5206\uff09\u6765\u4f20\u9001\u7ed9\u670d\u52a1\u5668\uff0c\u7136\u540e\u670d\u52a1\u5668\u8bfb\u53d6Session\u7684\u76ee\u5f55\u3002<\/p>\n

\u8981\u5b9e\u73b0Session\u7684\u6c38\u4e45\u751f\u547d\u671f\uff0c\u9996\u5148\u9700\u8981\u4e86\u89e3\u4e00\u4e0bphp.ini\u5173\u4e8eSession\u7684\u76f8\u5173\u8bbe\u7f6e\uff08\u6253\u5f00php.ini\u6587\u4ef6\uff0c\u5728\u201c[Session]\u201d\u90e8\u5206\uff09\uff1a<\/p>\n

1\u3001session.use_cookies\uff1a\u9ed8\u8ba4\u7684\u503c\u662f\u201c1\u201d\uff0c\u4ee3\u8868SessionID\u4f7f\u7528Cookie\u6765\u4f20\u9012\uff0c\u53cd\u4e4b\u5c31\u662f\u4f7f\u7528Query_String\u6765\u4f20\u9012\uff1b<\/p>\n

2\u3001session.name\uff1a\u8fd9\u4e2a\u5c31\u662fSessionID\u50a8\u5b58\u7684\u53d8\u91cf\u540d\u79f0\uff0c\u53ef\u80fd\u662fCookie\uff0c\u4e5f\u53ef\u80fd\u662fQuery_String\u6765\u4f20\u9012\uff0c\u9ed8\u8ba4\u503c\u662f\u201cPHPSESSID\u201d\uff1b<\/p>\n

3\u3001session.cookie_lifetime\uff1a\u8fd9\u4e2a\u4ee3\u8868SessionID\u5728\u5ba2\u6237\u7aefCookie\u50a8\u5b58\u7684\u65f6\u95f4\uff0c\u9ed8\u8ba4\u662f0\uff0c\u4ee3\u8868\u6d4f\u89c8\u5668\u4e00\u5173\u95edSessionID\u5c31\u4f5c\u5e9f\u2026\u2026\u5c31\u662f\u56e0\u4e3a\u8fd9\u4e2a\u6240\u4ee5Session\u4e0d\u80fd\u6c38\u4e45\u4f7f\u7528\uff01<\/p>\n

4\u3001session.gc_maxlifetime\uff1a\u8fd9\u4e2a\u662fSession\u6570\u636e\u5728\u670d\u52a1\u5668\u7aef\u50a8\u5b58\u7684\u65f6\u95f4\uff0c\u5982\u679c\u8d85\u8fc7\u8fd9\u4e2a\u65f6\u95f4\uff0c\u90a3\u4e48Session\u6570\u636e\u5c31\u81ea\u52a8\u5220\u9664\uff01<\/p>\n

\u8fd8\u6709\u5f88\u591a\u7684\u8bbe\u7f6e\uff0c\u4e0d\u8fc7\u548c\u672c\u6587\u76f8\u5173\u7684\u5c31\u662f\u8fd9\u4e9b\u4e86\uff0c\u4e0b\u9762\u8bf4\u4e0b\u5982\u4f55\u4f7f\u7528\u6c38\u4e45Session\u7684\u539f\u7406\u548c\u6b65\u9aa4\u3002<\/p>\n

\u524d\u9762\u8bf4\u8fc7\uff0c\u670d\u52a1\u5668\u901a\u8fc7SessionID\u6765\u8bfb\u53d6Session\u7684\u6570\u636e\uff0c\u4f46\u662f\u4e00\u822c\u6d4f\u89c8\u5668\u4f20\u9001\u7684SessionID\u5728\u6d4f\u89c8\u5668\u5173\u95ed\u540e\u5c31\u6ca1\u6709\u4e86\uff0c\u90a3\u4e48\u6211\u4eec\u53ea\u9700\u8981\u4eba\u4e3a\u7684\u8bbe\u7f6eSessionID\u5e76\u4e14\u4fdd\u5b58\u4e0b\u6765\uff0c\u4e0d\u5c31\u53ef\u4ee5\u4e86\u3002\u5982\u679c\u4f60\u62e5\u6709\u670d\u52a1\u5668\u7684\u64cd\u4f5c\u6743\u9650\uff0c\u90a3\u4e48\u8bbe\u7f6e\u8fd9\u4e2a\u975e\u5e38\u975e\u5e38\u7684\u7b80\u5355\uff0c\u53ea\u662f\u9700\u8981\u8fdb\u884c\u5982\u4e0b\u7684\u6b65\u9aa4\uff1a<\/p>\n

1\u3001\u628a\u201csession.use_cookies\u201d\u8bbe\u7f6e\u4e3a1\uff0c\u6253\u5f00Cookie\u50a8\u5b58SessionID\uff0c\u4e0d\u8fc7\u9ed8\u8ba4\u5c31\u662f1\uff0c\u4e00\u822c\u4e0d\u7528\u4fee\u6539\uff1b<\/p>\n

2\u3001\u628a\u201csession.cookie_lifetime\u201d\u6539\u4e3a\u6b63\u65e0\u7a77\uff08\u5f53\u7136\u6ca1\u6709\u6b63\u65e0\u7a77\u7684\u53c2\u6570\uff0c\u4e0d\u8fc7999999999\u548c\u6b63\u65e0\u7a77\u4e5f\u6ca1\u6709\u4ec0\u4e48\u533a\u522b\uff09;<\/p>\n

3\u3001\u628a\u201csession.gc_maxlifetime\u201d\u8bbe\u7f6e\u4e3a\u548c\u201csession.cookie_lifetime\u201d\u4e00\u6837\u7684\u65f6\u95f4\uff1b<\/p>\n

\u5728PHP\u7684\u6587\u6863\u4e2d\u660e\u786e\u6307\u51fa\uff0c\u8bbe\u5b9asession\u6709\u6548\u671f\u7684\u53c2\u6570\u662fsession.gc_maxlifetime\u3002\u53ef\u4ee5\u5728php.ini\u6587\u4ef6\u4e2d\uff0c\u6216\u8005\u901a\u8fc7ini_set()\u51fd\u6570\u6765\u4fee\u6539\u8fd9\u4e00\u53c2\u6570\u3002\u95ee\u9898\u5728\u4e8e\uff0c\u7ecf\u8fc7\u591a\u6b21\u6d4b\u8bd5\uff0c\u4fee\u6539\u8fd9\u4e2a\u53c2\u6570\u57fa\u672c\u4e0d\u8d77\u4f5c\u7528\uff0csession\u6709\u6548\u671f\u4ecd\u7136\u4fdd\u630124\u5206\u949f\u7684\u9ed8\u8ba4\u503c\u3002<\/p>\n

\u7531\u4e8ePHP\u7684\u5de5\u4f5c\u673a\u5236\uff0c\u5b83\u5e76\u6ca1\u6709\u4e00\u4e2adaemon\u7ebf\u7a0b\uff0c\u6765\u5b9a\u65f6\u5730\u626b\u63cfsession\u4fe1\u606f\u5e76\u5224\u65ad\u5176\u662f\u5426\u5931\u6548\u3002\u5f53\u4e00\u4e2a\u6709\u6548\u8bf7\u6c42\u53d1\u751f\u65f6\uff0cPHP\u4f1a\u6839\u636e\u5168\u5c40\u53d8\u91cfsession.gc_probability\/session.gc_divisor\uff08\u540c\u6837\u53ef\u4ee5\u901a\u8fc7php.ini\u6216\u8005ini_set()\u51fd\u6570\u6765\u4fee\u6539\uff09\u7684\u503c\uff0c\u6765\u51b3\u5b9a\u662f\u5426\u542f\u52a8\u4e00\u4e2aGC\uff08Garbage Collector\uff09\u3002<\/p>\n

\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0csession.gc_probability \uff1d 1\uff0csession.gc_divisor \uff1d100\uff0c\u4e5f\u5c31\u662f\u8bf4\u67091%\u7684\u53ef\u80fd\u6027\u4f1a\u542f\u52a8GC\u3002GC\u7684\u5de5\u4f5c\uff0c\u5c31\u662f\u626b\u63cf\u6240\u6709\u7684session\u4fe1\u606f\uff0c\u7528\u5f53\u524d\u65f6\u95f4\u51cf\u53bbsession\u7684\u6700\u540e\u4fee\u6539\u65f6\u95f4\uff08modified date\uff09\uff0c\u540csession.gc_maxlifetime\u53c2\u6570\u8fdb\u884c\u6bd4\u8f83\uff0c\u5982\u679c\u751f\u5b58\u65f6\u95f4\u5df2\u7ecf\u8d85\u8fc7gc_maxlifetime\uff0c\u5c31\u628a\u8be5session\u5220\u9664\u3002<\/p>\n

\u5230\u6b64\u4e3a\u6b62\uff0c\u5de5\u4f5c\u4e00\u5207\u6b63\u5e38\u3002\u90a3\u4e3a\u4ec0\u4e48\u4f1a\u53d1\u751fgc_maxlifetime\u65e0\u6548\u7684\u60c5\u51b5\u5462\uff1f<\/p>\n

\u5728\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0csession\u4fe1\u606f\u4f1a\u4ee5\u6587\u672c\u6587\u4ef6\u7684\u5f62\u5f0f\uff0c\u88ab\u4fdd\u5b58\u5728\u7cfb\u7edf\u7684\u4e34\u65f6\u6587\u4ef6\u76ee\u5f55\u4e2d\u3002\u5728Linux\u4e0b\uff0c\u8fd9\u4e00\u8def\u5f84\u901a\u5e38\u4e3a\\tmp\uff0c\u5728Windows\u4e0b\u901a\u5e38\u4e3aC:\\Windows\\Temp\u3002\u5f53\u670d\u52a1\u5668\u4e0a\u6709\u591a\u4e2aPHP\u5e94\u7528\u65f6\uff0c\u5b83\u4eec\u4f1a\u628a\u81ea\u5df1\u7684session\u6587\u4ef6\u90fd\u4fdd\u5b58\u5728\u540c\u4e00\u4e2a\u76ee\u5f55\u4e2d\u3002\u540c\u6837\u5730\uff0c\u8fd9\u4e9bPHP\u5e94\u7528\u4e5f\u4f1a\u6309\u4e00\u5b9a\u673a\u7387\u542f\u52a8GC\uff0c\u626b\u63cf\u6240\u6709\u7684session\u6587\u4ef6\u3002<\/p>\n

\u95ee\u9898\u5728\u4e8e\uff0cGC\u5728\u5de5\u4f5c\u65f6\uff0c\u5e76\u4e0d\u4f1a\u533a\u5206\u4e0d\u540c\u7ad9\u70b9\u7684session\u3002\u4e3e\u4f8b\u8a00\u4e4b\uff0c\u7ad9\u70b9A\u7684gc_maxlifetime\u8bbe\u7f6e\u4e3a2\u5c0f\u65f6\uff0c\u7ad9\u70b9B\u7684gc_maxlifetime\u8bbe\u7f6e\u4e3a\u9ed8\u8ba4\u768424\u5206\u949f\u3002\u5f53\u7ad9\u70b9B\u7684GC\u542f\u52a8\u65f6\uff0c\u5b83\u4f1a\u626b\u63cf\u516c\u7528\u7684\u4e34\u65f6\u6587\u4ef6\u76ee\u5f55\uff0c\u628a\u6240\u6709\u8d85\u8fc724\u5206\u949f\u7684session\u6587\u4ef6\u5168\u90e8\u5220\u9664\u6389\uff0c\u800c\u4e0d\u7ba1\u5b83\u4eec\u6765\u81ea\u4e8e\u7ad9\u70b9A\u6216B\u3002\u8fd9\u6837\uff0c\u7ad9\u70b9A\u7684gc_maxlifetime\u8bbe\u7f6e\u5c31\u5f62\u540c\u865a\u8bbe\u4e86\u3002<\/p>\n

\u627e\u5230\u95ee\u9898\u6240\u5728\uff0c\u89e3\u51b3\u8d77\u6765\u5c31\u5f88\u7b80\u5355\u4e86\u3002\u4fee\u6539session.save_path\u53c2\u6570\uff0c\u6216\u8005\u4f7f\u7528session_save_path()\u51fd\u6570\uff0c\u628a\u4fdd\u5b58session\u7684\u76ee\u5f55\u6307\u5411\u4e00\u4e2a\u4e13\u7528\u7684\u76ee\u5f55\uff0cgc_maxlifetime\u53c2\u6570\u5de5\u4f5c\u6b63\u5e38\u4e86\u3002<\/p>\n

\u4e25\u683c\u5730\u6765\u8bf4\uff0c\u8fd9\u7b97\u662fPHP\u7684\u4e00\u4e2abug\uff1f<\/p>\n

\u8fd8\u6709\u4e00\u4e2a\u95ee\u9898\u5c31\u662f\uff0cgc_maxlifetime\u53ea\u80fd\u4fdd\u8bc1session\u751f\u5b58\u7684\u6700\u77ed\u65f6\u95f4\uff0c\u5e76\u4e0d\u80fd\u591f\u4fdd\u5b58\u5728\u8d85\u8fc7\u8fd9\u4e00\u65f6\u95f4\u4e4b\u540esession\u4fe1\u606f\u7acb\u5373\u4f1a\u5f97\u5230\u5220\u9664\u3002\u56e0\u4e3aGC\u662f\u6309\u673a\u7387\u542f\u52a8\u7684\uff0c\u53ef\u80fd\u5728\u67d0\u4e00\u4e2a\u957f\u65f6\u95f4\u5185\u90fd\u6ca1\u6709\u88ab\u542f\u52a8\uff0c\u90a3\u4e48\u5927\u91cf\u7684session\u5728\u8d85\u8fc7gc_maxlifetime\u4ee5\u540e\u4ecd\u7136\u4f1a\u6709\u6548\u3002<\/p>\n

\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u7684\u4e00\u4e2a\u65b9\u6cd5\u662f\uff0c\u628asession.gc_probability\/session.gc_divisor\u7684\u673a\u7387\u63d0\u9ad8\uff0c\u5982\u679c\u63d0\u5230100%\uff0c\u5c31\u4f1a\u5f7b\u5e95\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u4f46\u663e\u7136\u4f1a\u5bf9\u6027\u80fd\u9020\u6210\u4e25\u91cd\u7684\u5f71\u54cd\u3002\u53e6\u4e00\u4e2a\u65b9\u6cd5\u662f\u81ea\u5df1\u5728\u4ee3\u7801\u4e2d\u5224\u65ad\u5f53\u524dsession\u7684\u751f\u5b58\u65f6\u95f4\uff0c\u5982\u679c\u8d85\u51fa\u4e86 gc_maxlifetime\uff0c\u5c31\u6e05\u7a7a\u5f53\u524dsession\u3002<\/p>\n

\u4f46\u662f\u5982\u679c\u4f60\u6ca1\u6709\u670d\u52a1\u5668\u7684\u64cd\u4f5c\u6743\u9650\uff0c\u90a3\u5c31\u6bd4\u8f83\u9ebb\u70e6\u4e86\uff0c\u4f60\u9700\u8981\u901a\u8fc7PHP\u7a0b\u5e8f\u6539\u5199SessionID\u6765\u5b9e\u73b0\u6c38\u4e45\u7684Session\u6570\u636e\u4fdd\u5b58\u3002\u67e5\u67e5php.net\u7684\u51fd\u6570\u624b\u518c\uff0c\u53ef\u4ee5\u89c1\u5230\u6709\u201csession_id\u201d\u8fd9\u4e2a\u51fd\u6570\uff1a\u5982\u679c\u6ca1\u6709\u8bbe\u7f6e\u53c2\u6570\uff0c\u90a3\u4e48\u5c06\u8fd4\u56de\u5f53\u524d\u7684SessionID\uff0c\u5982\u679c\u8bbe\u7f6e\u4e86\u53c2\u6570\uff0c\u5c31\u4f1a\u5c06\u5f53\u524d\u7684SessionID\u8bbe\u7f6e\u4e3a\u7ed9\u51fa\u7684\u503c\u3002<\/p>\n

\u53ea\u8981\u5229\u7528\u6c38\u4e45\u6027\u7684Cookie\u52a0\u4e0a\u201csession_id\u201d\u51fd\u6570\uff0c\u5c31\u53ef\u4ee5\u5b9e\u73b0\u6c38\u4e45Session\u6570\u636e\u4fdd\u5b58\u4e86\uff01<\/p>\n

\u4f46\u662f\u4e3a\u4e86\u65b9\u4fbf\uff0c\u6211\u4eec\u9700\u8981\u77e5\u9053\u670d\u52a1\u5668\u8bbe\u7f6e\u7684\u201csession.name\u201d\uff0c\u4f46\u662f\u4e00\u822c\u7528\u6237\u90fd\u6ca1\u6709\u6743\u9650\u67e5\u770b\u670d\u52a1\u5668\u7684php.ini\u8bbe\u7f6e\uff0c\u4e0d\u8fc7PHP\u63d0\u4f9b\u4e86\u4e00\u4e2a\u975e\u5e38\u597d\u7684\u51fd\u6570\u201cphpinfo\u201d\uff0c\u5229\u7528\u8fd9\u4e2a\u53ef\u4ee5\u67e5\u770b\u51e0\u4e4e\u6240\u6709\u7684PHP\u4fe1\u606f\uff01<\/p>\n

<?php\nphpinfo();<\/pre>\n
\u6253\u5f00\u7f16\u8f91\u5668\uff0c\u8f93\u5165\u4e0a\u9762\u7684\u4ee3\u7801\uff0c\u7136\u540e\u5728\u6d4f\u89c8\u5668\u4e2d\u8fd0\u884c\u8fd9\u4e2a\u7a0b\u5e8f\uff0c\u4f1a\u89c1\u5230PHP\u7684\u76f8\u5173\u4fe1\u606f\u3002\u5176\u4e2d\u6709\u4e00\u9879\u201csession.name\u201d\u7684\u53c2\u6570\uff0c\u8fd9\u4e2a\u5c31\u662f\u6211\u4eec\u9700\u8981\u7684\u670d\u52a1\u5668\u201csession.name\u201d\uff0c\u4e00\u822c\u662f\u201cPHPSESSID\u201d\u3002<\/span><\/p>\n
\u8bb0\u4e0b\u4e86SessionID\u7684\u540d\u79f0\u540e\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u5b9e\u73b0\u6c38\u4e45\u7684Session\u6570\u636e\u50a8\u5b58\u4e86\uff01<\/span><\/p>\n
<?php\nsession_start();\nini_set('session.save_path','\/tmp\/');\n\/\/6\u4e2a\u949f\u5934\nini_set('session.gc_maxlifetime',21600);\n\/\/\u4fdd\u5b58\u4e00\u5929\n$lifeTime = 24 * 3600;\nsetcookie(session_name(), session_id(), time() + $lifeTime, \"\/\");<\/pre>\n
\u53e6\u5916\u5bf9\u4e8e\u8bbe\u7f6ephp session\u7684\u751f\u5b58\u65f6\u95f4\uff0c\u7f51\u4e0a\u770b\u5230\u6709\u7f51\u53cb\u5199\u4e86\u4e00\u4e2a\u5f88\u4e0d\u9519\u7684\u65b9\u6cd5\uff0c\u8fd9\u91cc\u5c06\u4ee3\u7801\u5206\u4eab\u4e00\u4e0b\uff1a<\/p>\n
<?php\nfunction start_session($expire=0){\n\tif($expire==0){\n\t\t$expire=ini_get('session.gc_maxlifetime');\n\t}else{\n\t\tini_set('session.gc_maxlifetime',$expire);\n\t}\n\tif(empty($_COOKIE['PHPSESSID'])){\n\t\tsession_set_cookie_params($expire);\n\t\tsession_start();\n\t}else{\n\t\tsession_start();\n\t\tsetcookie('PHPSESSID',session_id(),time()+$expire);\n\t}\n}<\/pre>\n
\u4f7f\u7528\u65b9\u6cd5\u4e5f\u5f88\u7b80\u5355\uff0c\u4f8b\u5982\uff1a<\/span><\/p>\n
<?php start_session(600);\/\/600\u79d2\u4ee5\u540e\u8fc7\u671f<\/pre>\n","protected":false},"excerpt":{"rendered":"
\u9996\u5148\u8bf4\u4e00\u4e0bsession\u7684\u521b\u5efa\u7684\u5f00\u59cb\u5230\u7ed3\u675f\u7684\u8fc7\u7a0b\u3002 \u5f53\u7a0b\u5e8f\u9700…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-770","post","type-post","status-publish","format-standard","hentry","category-php"],"_links":{"self":[{"href":"https:\/\/blog.nonot.cn\/index.php\/wp-json\/wp\/v2\/posts\/770","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.nonot.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.nonot.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.nonot.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.nonot.cn\/index.php\/wp-json\/wp\/v2\/comments?post=770"}],"version-history":[{"count":1,"href":"https:\/\/blog.nonot.cn\/index.php\/wp-json\/wp\/v2\/posts\/770\/revisions"}],"predecessor-version":[{"id":1128,"href":"https:\/\/blog.nonot.cn\/index.php\/wp-json\/wp\/v2\/posts\/770\/revisions\/1128"}],"wp:attachment":[{"href":"https:\/\/blog.nonot.cn\/index.php\/wp-json\/wp\/v2\/media?parent=770"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.nonot.cn\/index.php\/wp-json\/wp\/v2\/categories?post=770"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.nonot.cn\/index.php\/wp-json\/wp\/v2\/tags?post=770"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}