{"id":289,"date":"2017-03-13T16:57:31","date_gmt":"2017-03-13T08:57:31","guid":{"rendered":"http:\/\/blog.inforere.com\/?p=289"},"modified":"2018-02-11T16:26:34","modified_gmt":"2018-02-11T08:26:34","slug":"session","status":"publish","type":"post","link":"https:\/\/blog.inforere.com\/?p=289","title":{"rendered":"php\u7684session\u7ba1\u7406"},"content":{"rendered":"

\u6709\u6548\u671f<\/h3>\n

\u5f53\u4e00\u4e2a\u6709\u6548\u8bf7\u6c42\u53d1\u751f\u65f6\uff0cPHP\u4f1a\u6839\u636e\u5168\u5c40\u53d8\u91cfsession.gc_probability\/session.gc_divisor\u7684\u503c, \u6765\u51b3\u5b9a\u662f\u5426\u542f\u52a8\u4e00\u4e2aGC\uff08Garbage Collector\uff09\u3002 \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\u3002 GC\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

session\u670d\u52a1\u7aef\u76f8\u5173\u53c2\u6570\uff1a<\/p>\n

    \n
  1. session.gc_maxlifetime\uff0c \u68c0\u6d4b<\/li>\n
  2. session.gc_probability, \u542f\u52a8gc\u6982\u7387\u7684\u5206\u5b50<\/li>\n
  3. session.session.gc_divisor, \u542f\u52a8gc\u6982\u7387\u7684\u5206\u6bcd<\/li>\n
  4. session.save_path \u4e3a\u4e86\u907f\u514dphp\u591a\u6b21\u8bbe\u7f6e\u4e0d\u540c\u503c\uff0c\u5bfc\u81f4\u90e8\u5206\u8bbe\u7f6e\u65e0\u6548\uff0c\u4fee\u6539\u6b64\u503c\u4e3a\u4e0d\u540c\u8def\u5f84<\/li>\n<\/ol>\n

    session\u5ba2\u6237\u7aef\u76f8\u5173\u53c2\u6570\uff1a<\/p>\n

      \n
    1. session.use_cookies<\/li>\n
    2. session.cookie_lifetime<\/li>\n<\/ol>\n

      session\u6709\u6548\u914d\u7f6e\u53c2\u6570\u53c2\u8003session\u5b98\u65b9\u914d\u7f6e<\/a><\/p>\n

      \u5728\u670d\u52a1\u7aef\u7684\u5b58\u50a8\uff1a<\/h3>\n

      \u5982\u679c\u4f60\u5728 session_start() \u524d\u8c03\u7528\u4e86 session_name(‘SID’); \u90a3\u4e48\u6b63\u5e38\u60c5\u51b5\u4e0b\uff08\u5ba2\u6237\u7aef\u652f\u6301Cookie\u65f6\uff09, \u4f1a\u7ed9\u5ba2\u6237\u7aef\u53d1\u9001 Set-Cookie: SID=(session_id \u7684\u503c);<\/p>\n

      \u4ee5session_id()\u7684\u503c\u4f5c\u7528\u5b58\u50a8\u7684\u952e(\u7528\u4f5c\u6587\u4ef6\u540d)\uff0c\u4e00\u4e2a\u4f1a\u8bdd\u7684\u5185\u5bb9\u4ee5php\u5e8f\u5217\u5316\u7684\u503c\u8fdb\u884c\u5b58\u50a8\uff0c\u5982\u4f7f\u7528memecache\u8fdb\u884c\u4f1a\u8bdd\u5b58\u50a8\u4e86key, \u53cakey_expire, \u4ee5\u4e0b\u662f\u4e24\u4e2a\u4f1a\u8bdd\u7684\u5b58\u50a8\u60c5\u51b5<\/p>\n

      Dumping bucket 2 – 2 total items
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      \u6709\u6548\u671f \u5f53\u4e00\u4e2a\u6709\u6548\u8bf7\u6c42\u53d1\u751f\u65f6\uff0cPHP\u4f1a\u6839\u636e\u5168\u5c40\u53d8\u91cfsession.gc_probability\/session […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20,6],"tags":[43],"_links":{"self":[{"href":"https:\/\/blog.inforere.com\/index.php?rest_route=\/wp\/v2\/posts\/289"}],"collection":[{"href":"https:\/\/blog.inforere.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.inforere.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.inforere.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.inforere.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=289"}],"version-history":[{"count":6,"href":"https:\/\/blog.inforere.com\/index.php?rest_route=\/wp\/v2\/posts\/289\/revisions"}],"predecessor-version":[{"id":342,"href":"https:\/\/blog.inforere.com\/index.php?rest_route=\/wp\/v2\/posts\/289\/revisions\/342"}],"wp:attachment":[{"href":"https:\/\/blog.inforere.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=289"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.inforere.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=289"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.inforere.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=289"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}