{"id":1033,"date":"2009-12-02T19:07:21","date_gmt":"2009-12-02T11:07:21","guid":{"rendered":"http:\/\/orczhou.com\/?p=1033"},"modified":"2010-02-28T18:54:20","modified_gmt":"2010-02-28T10:54:20","slug":"php-session","status":"publish","type":"post","link":"https:\/\/www.orczhou.com\/index.php\/2009\/12\/php-session\/","title":{"rendered":"php\u4e2dsession\u8fc7\u671f\u65f6\u95f4\u8bbe\u7f6e"},"content":{"rendered":"

\u7f51\u4e0a\u5f88\u591a\u4eba\u7ed9\u51fa\u4e86\u89e3\u7b54<\/a>\uff1a\u4fee\u6539php\u914d\u7f6e\u6587\u4ef6\u4e2d\u7684session.gc_maxlifetime\u3002\u5982\u679c\u60f3\u4e86\u89e3\u66f4\u591asession\u56de\u6536\u673a\u5236\uff0c\u7ee7\u7eed\u9605\u8bfb\u3002\uff08\u672c\u6587\u73af\u5883php5.2\uff09<\/p>\n

\u6982\u8ff0\uff1a\u6bcf\u4e00\u6b21php\u8bf7\u6c42\uff0c\u4f1a\u67091\/100\u7684\u6982\u7387\uff08\u9ed8\u8ba4\u503c\uff09\u89e6\u53d1\u201csession\u56de\u6536\u201d\u3002\u5982\u679c\u201csession\u56de\u6536\u201d\u53d1\u751f\uff0c\u90a3\u5c31\u4f1a\u68c0\u67e5\/tmp\/sess_*\u7684\u6587\u4ef6\uff0c\u5982\u679c\u6700\u540e\u7684\u4fee\u6539\u65f6\u95f4\u5230\u73b0\u5728\u8d85\u8fc7\u4e861440\u79d2\uff08gc_maxlifetime\u7684\u503c\uff09\uff0c\u5c31\u5c06\u5176\u5220\u9664\uff0c\u610f\u5473\u7740\u8fd9\u4e9bsession\u8fc7\u671f\u5931\u6548\u3002<\/p>\n

1. session\u5728server\u7aef\uff08\u4e00\u822c\u662fApache with PHP module\uff09\u5982\u4f55\u5b58\u5728\u7684\uff1f<\/font> <\/p>\n

\u9ed8\u8ba4\u7684\uff0cphp\u4f1a\u5c06session\u4fdd\u5b58\u5728\/tmp\u76ee\u5f55\u4e0b\uff0c\u6587\u4ef6\u540d\u4e3a\u8fd9\u4e2a\u6837\u5b50\uff1asess_01aab840166fd1dc253e3b4a3f0b8381\u3002\u6bcf\u4e00\u4e2a\u6587\u4ef6\u5bf9\u5e94\u4e86\u4e00\u4e2asession\uff08\u4f1a\u8bdd\uff09\u3002<\/p>\n

\nmore \/tmp\/sess_01aab840166fd1dc253e3b4a3f0b8381
\nusername|s:9:”jiangfeng”;admin|s:1:”0″;
\n#\u53d8\u91cf\u540d|\u7c7b\u578b:\u957f\u5ea6:\u503c\n<\/div>\n

\u5220\u9664\u8fd9\u91cc\u7684session\u6587\u4ef6\uff0c\u5c31\u8868\u793a\u5bf9\u5e94\u7684session\u5931\u6548\u4e86\u3002<\/p>\n

2. session\u5728client\u7aef\uff08\u4e00\u822c\u662f\u6d4f\u89c8\u5668\uff09\u5982\u4f55\u5b58\u5728\u7684\uff1f<\/font> <\/p>\n

session\u5728\u6d4f\u89c8\u5668\u7aef\uff0c\u53ea\u9700\u8981\u4fdd\u5b58session ID\uff08\u7531server\u7aef\u751f\u6210\u7684\u552f\u4e00ID\uff09\u5c31\u53ef\u4ee5\u4e86\u3002\u6709\u4e24\u79cd\u4fdd\u5b58\u65b9\u5f0f\uff1a\u5728cookie\u4e2d\u3001\u5728url\u91cc\u9762\u3002\u5982\u679ccookie\u4e2d\u4fdd\u5b58session ID\uff0c\u5c31\u53ef\u4ee5\u770b\u5230\u6d4f\u89c8\u5668\u7684cookie\u4e2d\u6709\u4e00\u4e2aPHPSESID\u53d8\u91cf\u3002\u5982\u679c\u662fURL\u4f20\u9012\u7684\uff0c\u5c31\u53ef\u4ee5\u770b\u5230\u5f62\u5982:
\nindex.php?PHPSESID=01aab840166fd1dc253e3b4a3f0b8381\u7684URL\u3002\uff08\u5728server\u7aef\u901a\u8fc7session.use_cookies\u6765\u63a7\u5236\u4f7f\u7528\u54ea\u4e00\u79cd\u65b9\u5f0f\uff09<\/p>\n

3. \u5728server\u7aef\uff0cphp\u5982\u4f55\u5224\u65adsession\u6587\u4ef6\u662f\u5426\u8fc7\u671f\uff1f<\/font> <\/p>\n

\u5982\u679c”\u6700\u540e\u7684\u4fee\u6539\u65f6\u95f4”\u5230”\u73b0\u5728”\u8d85\u8fc7\u4e86gc_maxlifetime\uff08\u9ed8\u8ba4\u662f1440\uff09\u79d2\uff0c\u8fd9\u4e2asession\u6587\u4ef6\u5c31\u88ab\u8ba4\u4e3a\u662f\u8fc7\u671f\u4e86\uff0c\u5728\u4e0b\u4e00\u6b21session\u56de\u6536\u7684\u65f6\u5019\uff0c\u5982\u679c\u8fd9\u4e2a\u6587\u4ef6\u4ecd\u7136\u6ca1\u6709\u88ab\u66f4\u6539\u8fc7\uff0c\u8fd9\u4e2asession\u6587\u4ef6\u5c31\u4f1a\u88ab\u5220\u9664\uff08session\u5c31\u8fc7\u671f\u4e86\uff09\u3002<\/p>\n

\u7b80\u5355\u7684\u8bf4\uff0c\u5982\u679c\u6211\u767b\u5f55\u5230\u67d0\u7f51\u7ad9\uff0c\u5982\u679c\u57281440\u79d2\uff08\u9ed8\u8ba4\u503c\uff09\u5185\u6ca1\u6709\u64cd\u4f5c\u8fc7\uff0c\u90a3\u4e48\u5bf9\u5e94\u7684session\u5c31\u8ba4\u4e3a\u662f\u8fc7\u671f\u4e86\u3002<\/p>\n

\u6240\u4ee5\uff0c\u4fee\u6539php.ini\u6587\u4ef6\u4e2d\u7684gc_maxlifetime\u53d8\u91cf\u5c31\u53ef\u4ee5\u5ef6\u957fsession\u7684\u8fc7\u671f\u65f6\u95f4\u4e86\uff1a\uff08\u4f8b\u5982\uff0c\u6211\u4eec\u628a\u8fc7\u671f\u65f6\u95f4\u4fee\u6539\u4e3a86400\u79d2\uff09<\/p>\n

\nsession.gc_maxlifetime = 86400\n<\/div>\n

\u7136\u540e\uff0c\u91cd\u542f\u4f60\u7684web\u670d\u52a1\uff08\u4e00\u822c\u662fapache\uff09\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n

\u6ce8\u610f\uff1aphp5\u91cc\u9762session\u8fc7\u671f\u4f7f\u7528\u4e86\u56de\u6536\u673a\u5236\u3002\u8fd9\u91cc\u8bbe\u7f6e\u65f6\u95f4\u4e3a86400\u79d2\uff0c\u5982\u679csession\u572886400\u79d2\u5185\u6ca1\u6709\u88ab\u4fee\u6539\u8fc7\uff0c\u90a3\u4e48\u5728\u4e0b\u4e00\u6b21\u201c\u56de\u6536\u201d\u65f6\u624d\u771f\u7684\u88ab\u5220\u9664\u3002<\/p>\n

3. session\u201c\u56de\u6536\u201d\u4f55\u65f6\u53d1\u751f\uff1f<\/font> <\/p>\n

\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u6bcf\u4e00\u6b21php\u8bf7\u6c42\uff0c\u5c31\u4f1a\u67091\/100\u7684\u6982\u7387\u53d1\u751f\u56de\u6536\uff0c\u6240\u4ee5\u53ef\u80fd\u7b80\u5355\u7684\u7406\u89e3\u4e3a\u201c\u6bcf100\u6b21php\u8bf7\u6c42\u5c31\u6709\u4e00\u6b21\u56de\u6536\u53d1\u751f\u201d\u3002\u8fd9\u4e2a\u6982\u7387\u662f\u901a\u8fc7\u4ee5\u4e0b\u53c2\u6570\u63a7\u5236\u7684<\/p>\n

\n#\u6982\u7387\u662fgc_probability\/gc_divisor
\nsession.gc_probability = 1
\nsession.gc_divisor = 100\n<\/div>\n

\u6ce8\u610f1\uff1a\u5047\u8bbe\u8fd9\u79cd\u60c5\u51b5gc_maxlifetime=120\uff0c\u5982\u679c\u67d0\u4e2asession\u6587\u4ef6\u6700\u540e\u4fee\u6539\u65f6\u95f4\u662f120\u79d2\u4e4b\u524d\uff0c\u90a3\u4e48\u5728\u4e0b\u4e00\u6b21\u56de\u6536\uff081\/100\u7684\u6982\u7387\uff09\u53d1\u751f\u524d\uff0c\u8fd9\u4e2asession\u4ecd\u7136\u662f\u6709\u6548\u7684\u3002<\/p>\n

\u6ce8\u610f2\uff1a\u5982\u679c\u4f60\u7684session\u4f7f\u7528session.save_path\u4e2d\u4f7f\u7528\u522b\u7684\u5730\u65b9\u4fdd\u5b58session\uff0csession\u56de\u6536\u673a\u5236\u6709\u53ef\u80fd\u4e0d\u4f1a\u81ea\u52a8\u5904\u7406\u8fc7\u671fsession\u6587\u4ef6\u3002\u8fd9\u65f6\u9700\u8981\u5b9a\u65f6\u624b\u52a8\uff08\u6216\u8005crontab\uff09\u7684\u5220\u9664\u8fc7\u671f\u7684session\uff1acd \/path\/to\/sessions; find -cmin +24 | xargs rm<\/p>\n

4. \u4e00\u4e9b\u7279\u6b8a\u60c5\u51b5<\/font> <\/p>\n

\u56e0\u4e3a\u56de\u6536\u673a\u5236\u4f1a\u68c0\u67e5\u6587\u4ef6\u7684\u201c\u6700\u540e\u4fee\u6539\u65f6\u95f4\u201d\uff0c\u6240\u4ee5\u5982\u679c\u67d0\u4e2a\u4f1a\u8bdd\u662f\u6d3b\u8dc3\u7684\uff0c\u4f46\u662fsession\u7684\u5185\u5bb9\u6ca1\u6709\u6539\u53d8\u8fc7\uff0c\u90a3\u4e48\u5bf9\u5e94\u7684session\u6587\u4ef6\u4e5f\u5c31\u6ca1\u6709\u6539\u53d8\u8fc7\uff0c\u56de\u6536\u673a\u5236\u4f1a\u8ba4\u4e3a\u8fd9\u662f\u4e00\u4e2a\u957f\u65f6\u95f4\u6ca1\u6709\u6d3b\u8dc3\u7684session\u800c\u5c06\u5176\u5220\u9664\u3002\u8fd9\u662f\u6211\u4eec\u4e0d\u613f\u770b\u5230\u7684\uff0c\u53ef\u4ee5\u901a\u8fc7\u589e\u52a0\u5982\u4e0b\u7684\u7b80\u5355\u4ee3\u7801\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff1a<\/p>\n

<?php\r\nif(!isset($_SESSION['last_access'])||(time()-$_SESSION['last_access'])>60)\r\n\t$_SESSION['last_access'] = time(); \r\n?> \r\n<\/div><\/pre>\n
\u4ee3\u7801\u4f1a\u6bcf\u969460\u79d2\uff0c\u5c1d\u8bd5\u4fee\u6539\u4fee\u6539\u4e00\u6b21session\u3002<\/p>\n
\u603b\u7ed3\uff1a\u5982\u679c\u60f3\u4fee\u6539session\u8fc7\u671f\u65f6\u95f4\uff0c\u4fee\u6539\u53d8\u91cfgc_maxlifetime\u5c31\u53ef\u4ee5\u4e86\u3002php5\u7684session\u91c7\u7528\u88ab\u52a8\u7684\u56de\u6536\u673a\u5236\uff08garbage collection\uff09\u3002\u8fc7\u671f\u7684session\u6587\u4ef6\u4e0d\u4f1a\u81ea\u5df1\u6d88\u5931\uff0c\u800c\u662f\u901a\u8fc7\u89e6\u53d1\u201c\u56de\u6536\u201d\u6765\u5904\u7406\u8fc7\u671f\u7684session\u3002<\/p>\n
\u53c2\u8003\u6587\u732e\uff1a<\/p>\n
    \n
  1. php Manual<\/a><\/li>\n
  2. php.ini\u6587\u4ef6<\/li>\n
  3. PHP\u4f1a\u8bdd(Session)\u4f7f\u7528\u5165\u95e8<\/a><\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"
    \u7f51\u4e0a\u5f88\u591a\u4eba\u7ed9\u51fa\u4e86\u89e3\u7b54\uff1a\u4fee\u6539php\u914d\u7f6e\u6587\u4ef6\u4e2d\u7684session.gc_maxlifetime\u3002\u5982\u679c\u60f3\u4e86\u89e3\u66f4\u591asession\u56de\u6536\u673a\u5236\uff0c\u7ee7\u7eed\u9605\u8bfb\u3002\uff08\u672c\u6587\u73af\u5883php5.2\uff09 \u6982\u8ff0\uff1a\u6bcf\u4e00\u6b21php\u8bf7\u6c42\uff0c\u4f1a\u67091\/100\u7684\u6982\u7387\uff08\u9ed8\u8ba4\u503c\uff09\u89e6\u53d1\u201csession\u56de\u6536\u201d\u3002\u5982\u679c\u201csession\u56de\u6536\u201d\u53d1\u751f\uff0c\u90a3\u5c31\u4f1a\u68c0\u67e5\/tmp\/sess_*\u7684\u6587\u4ef6\uff0c\u5982\u679c\u6700\u540e\u7684\u4fee\u6539\u65f6\u95f4\u5230\u73b0\u5728\u8d85\u8fc7\u4e861440\u79d2\uff08gc_maxlifetime\u7684\u503c\uff09\uff0c\u5c31\u5c06\u5176\u5220\u9664\uff0c\u610f\u5473\u7740\u8fd9\u4e9bsession\u8fc7\u671f\u5931\u6548\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_eb_attr":"","inline_featured_image":false,"_tocer_settings":[],"footnotes":""},"categories":[4],"tags":[],"class_list":["post-1033","post","type-post","status-publish","format-standard","hentry","category-code-detail"],"_links":{"self":[{"href":"https:\/\/www.orczhou.com\/index.php\/wp-json\/wp\/v2\/posts\/1033","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.orczhou.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.orczhou.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.orczhou.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.orczhou.com\/index.php\/wp-json\/wp\/v2\/comments?post=1033"}],"version-history":[{"count":28,"href":"https:\/\/www.orczhou.com\/index.php\/wp-json\/wp\/v2\/posts\/1033\/revisions"}],"predecessor-version":[{"id":1498,"href":"https:\/\/www.orczhou.com\/index.php\/wp-json\/wp\/v2\/posts\/1033\/revisions\/1498"}],"wp:attachment":[{"href":"https:\/\/www.orczhou.com\/index.php\/wp-json\/wp\/v2\/media?parent=1033"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.orczhou.com\/index.php\/wp-json\/wp\/v2\/categories?post=1033"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.orczhou.com\/index.php\/wp-json\/wp\/v2\/tags?post=1033"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}