{"id":3054,"date":"2025-03-20T23:59:03","date_gmt":"2025-03-20T15:59:03","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=3054"},"modified":"2025-03-20T23:59:03","modified_gmt":"2025-03-20T15:59:03","slug":"php-session-%e5%85%a8%e9%9d%a2%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/03\/20\/php-session-%e5%85%a8%e9%9d%a2%e8%af%a6%e8%a7%a3\/","title":{"rendered":"PHP Session \u5168\u9762\u8be6\u89e3"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">1. \u4ec0\u4e48\u662f Session\uff1f<\/h2>\n\n\n\n<p>Session\uff08\u4f1a\u8bdd\uff09\u662f\u4e00\u79cd\u5b58\u50a8\u5728\u670d\u52a1\u5668\u7aef\u7684\u7528\u6237\u6570\u636e\u673a\u5236\uff0c\u53ef\u4ee5\u5728\u591a\u4e2a\u9875\u9762\u95f4\u4fdd\u6301\u7528\u6237\u72b6\u6001\u3002\u5b83\u901a\u5e38\u7528\u4e8e\u7528\u6237\u8eab\u4efd\u9a8c\u8bc1\u3001\u8d2d\u7269\u8f66\u7ba1\u7406\u7b49\u5e94\u7528\u573a\u666f\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">2. Session \u7684\u5de5\u4f5c\u539f\u7406<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u670d\u52a1\u5668\u7aef\u521b\u5efa Session<\/strong><br>\u670d\u52a1\u5668\u751f\u6210\u4e00\u4e2a\u552f\u4e00\u7684 <code>Session ID<\/code> \u5e76\u5b58\u50a8\u7528\u6237\u6570\u636e\u3002<\/li>\n\n\n\n<li><strong>\u5ba2\u6237\u7aef\u5b58\u50a8 <code>Session ID<\/code><\/strong><br>PHP \u901a\u8fc7 Cookie\uff08\u9ed8\u8ba4\u540d <code>PHPSESSID<\/code>\uff09\u5c06 <code>Session ID<\/code> \u53d1\u9001\u7ed9\u7528\u6237\u6d4f\u89c8\u5668\u3002<\/li>\n\n\n\n<li><strong>\u7528\u6237\u8bbf\u95ee\u7f51\u7ad9\u65f6\uff0c\u670d\u52a1\u5668\u901a\u8fc7 <code>Session ID<\/code> \u8bc6\u522b\u7528\u6237<\/strong><br>\u670d\u52a1\u5668\u6839\u636e <code>Session ID<\/code> \u8bfb\u53d6\u5bf9\u5e94\u7684 Session \u6570\u636e\u3002<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">3. \u542f\u52a8 Session<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u65b9\u5f0f 1\uff1a<code>session_start()<\/code><\/h3>\n\n\n\n<p>\u5728\u4f7f\u7528 <code>$_SESSION<\/code> \u4e4b\u524d\uff0c\u5fc5\u987b\u8c03\u7528 <code>session_start()<\/code>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>session_start();\n$_SESSION&#91;\"username\"] = \"JohnDoe\";\necho \"Session \u5df2\u521b\u5efa\";<\/code><\/pre>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>\u6ce8\u610f\uff1a<\/strong> <code>session_start()<\/code> \u5fc5\u987b\u5728 HTML \u4ee3\u7801\u6216 <code>echo<\/code> \u4e4b\u524d\u8c03\u7528\uff0c\u5426\u5219\u4f1a\u51fa\u73b0 <strong>&#8220;Headers already sent&#8221;<\/strong> \u9519\u8bef\u3002<\/p>\n<\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\">\u65b9\u5f0f 2\uff1a<code>session_id()<\/code>\uff08\u53ef\u9009\uff09<\/h3>\n\n\n\n<p>\u5982\u679c\u9700\u8981\u624b\u52a8\u8bbe\u7f6e <code>Session ID<\/code>\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>session_id(\"custom_session_id\");\nsession_start();<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">4. \u8bfb\u53d6 Session<\/h2>\n\n\n\n<p>\u4f7f\u7528 <code>$_SESSION<\/code> \u8d85\u5168\u5c40\u6570\u7ec4\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>session_start();\nif (isset($_SESSION&#91;\"username\"])) {\n    echo \"\u5f53\u524d\u7528\u6237\uff1a\" . $_SESSION&#91;\"username\"];\n} else {\n    echo \"\u672a\u8bbe\u7f6e Session\";\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">5. \u9500\u6bc1 Session<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u65b9\u5f0f 1\uff1a\u5220\u9664\u67d0\u4e2a Session \u53d8\u91cf<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>session_start();\nunset($_SESSION&#91;\"username\"]);<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u65b9\u5f0f 2\uff1a\u5f7b\u5e95\u9500\u6bc1 Session<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>session_start();\nsession_unset();  \/\/ \u6e05\u7a7a\u6240\u6709 Session \u53d8\u91cf\nsession_destroy(); \/\/ \u5f7b\u5e95\u9500\u6bc1 Session<\/code><\/pre>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>\u6ce8\u610f\uff1a<\/strong> <code>session_destroy()<\/code> \u4e0d\u4f1a\u5220\u9664\u6d4f\u89c8\u5668\u4e2d\u7684 <code>Session ID<\/code>\uff0c\u4f46\u4f1a\u8ba9\u670d\u52a1\u5668\u4e0d\u518d\u8bc6\u522b\u8be5 ID\u3002<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">6. Session \u914d\u7f6e<\/h2>\n\n\n\n<p>PHP \u7684 Session \u884c\u4e3a\u53ef\u4ee5\u901a\u8fc7 <code>php.ini<\/code> \u914d\u7f6e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>session.gc_maxlifetime = 1440   ; \u9ed8\u8ba4 24 \u5206\u949f\uff08\u79d2\uff09\nsession.save_path = \"\/var\/lib\/php\/sessions\" ; Session \u5b58\u50a8\u8def\u5f84\nsession.cookie_lifetime = 0     ; 0 \u8868\u793a\u6d4f\u89c8\u5668\u5173\u95ed\u540e\u5220\u9664\nsession.use_cookies = 1         ; \u662f\u5426\u4f7f\u7528 Cookie \u8bb0\u5f55 Session ID\nsession.cookie_secure = 1       ; \u4ec5\u5728 HTTPS \u8fde\u63a5\u65f6\u4f20\u8f93\nsession.cookie_httponly = 1     ; \u7981\u6b62 JavaScript \u8bbf\u95ee\uff08\u9632\u8303 XSS\uff09\nsession.use_strict_mode = 1     ; \u5f3a\u5236\u4f7f\u7528\u552f\u4e00 Session ID\uff08\u589e\u5f3a\u5b89\u5168\u6027\uff09<\/code><\/pre>\n\n\n\n<p>\u4f60\u4e5f\u53ef\u4ee5\u5728\u4ee3\u7801\u4e2d\u52a8\u6001\u4fee\u6539\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ini_set(\"session.gc_maxlifetime\", 3600); \/\/ \u8bbe\u7f6e Session 1 \u5c0f\u65f6\u8fc7\u671f\nini_set(\"session.save_path\", \"\/tmp\");   \/\/ \u81ea\u5b9a\u4e49 Session \u5b58\u50a8\u8def\u5f84<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">7. \u81ea\u5b9a\u4e49 Session \u5904\u7406<\/h2>\n\n\n\n<p>PHP \u9ed8\u8ba4\u5c06 Session \u5b58\u50a8\u5728\u670d\u52a1\u5668\u6587\u4ef6\u7cfb\u7edf\u4e2d\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u6570\u636e\u5e93\u6216 Redis \u5b58\u50a8\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u65b9\u5f0f 1\uff1a\u5b58\u50a8\u5230\u6570\u636e\u5e93<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>session_set_save_handler(\n    \"open\",\n    \"close\",\n    \"read\",\n    \"write\",\n    \"destroy\",\n    \"gc\"\n);<\/code><\/pre>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u4f60\u53ef\u4ee5\u91cd\u5199\u8fd9\u4e9b\u56de\u8c03\u51fd\u6570\u6765\u7ba1\u7406 Session \u6570\u636e\u3002<\/p>\n<\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\">\u65b9\u5f0f 2\uff1a\u5b58\u50a8\u5230 Redis\uff08\u63a8\u8350\uff09<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>ini_set(\"session.save_handler\", \"redis\");\nini_set(\"session.save_path\", \"tcp:\/\/127.0.0.1:6379\");\nsession_start();<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">8. Session \u4e0e Cookie \u7684\u533a\u522b<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u5bf9\u6bd4\u9879<\/th><th>Session<\/th><th>Cookie<\/th><\/tr><\/thead><tbody><tr><td>\u5b58\u50a8\u4f4d\u7f6e<\/td><td>\u670d\u52a1\u5668\u7aef<\/td><td>\u5ba2\u6237\u7aef\u6d4f\u89c8\u5668<\/td><\/tr><tr><td>\u9002\u7528\u8303\u56f4<\/td><td>\u4ec5\u9650\u5f53\u524d\u4f1a\u8bdd<\/td><td>\u53ef\u8de8\u4f1a\u8bdd\u6301\u4e45\u5b58\u50a8<\/td><\/tr><tr><td>\u8fc7\u671f\u65f6\u95f4<\/td><td>\u9ed8\u8ba4\u6d4f\u89c8\u5668\u5173\u95ed\u5373\u9500\u6bc1<\/td><td>\u53ef\u624b\u52a8\u8bbe\u7f6e<\/td><\/tr><tr><td>\u5b89\u5168\u6027<\/td><td>\u66f4\u5b89\u5168\uff0c\u4e0d\u66b4\u9732\u6570\u636e<\/td><td>\u6613\u88ab\u7be1\u6539<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">9. \u5e38\u89c1\u95ee\u9898<\/h2>\n\n\n\n<p><strong>Q1: <code>session_start()<\/code> \u62a5\u9519\uff1f<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u786e\u4fdd <code>session_start()<\/code> \u5728 <strong>\u4efb\u4f55\u8f93\u51fa\u4e4b\u524d<\/strong> \u8fd0\u884c\u3002<\/li>\n\n\n\n<li>\u786e\u4fdd <code>php.ini<\/code> \u4e2d <code>session.save_path<\/code> \u53ef\u5199\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>Q2: Session \u65e0\u6cd5\u4fdd\u6301\uff1f<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u53ef\u80fd\u662f\u6d4f\u89c8\u5668\u7981\u7528\u4e86 Cookie\uff08Session \u4f9d\u8d56 <code>PHPSESSID<\/code>\uff09\u3002<\/li>\n\n\n\n<li>\u670d\u52a1\u5668 <code>session.gc_maxlifetime<\/code> \u8bbe\u7f6e\u8fc7\u77ed\uff0c\u5bfc\u81f4\u81ea\u52a8\u6e05\u7406\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">10. \u53c2\u8003\u8d44\u6599<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.php.net\/manual\/en\/book.session.php\">PHP \u5b98\u65b9\u6587\u6863 &#8211; Session<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.php.net\/manual\/en\/session.configuration.php\">PHP Session \u5904\u7406<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/redis.io\/docs\/manual\/data-types\/pubsub\/\">PHP Redis Session \u5b58\u50a8<\/a><\/li>\n<\/ul>\n\n\n\n<p>\u66f4\u591a\u8be6\u7ec6\u5185\u5bb9\u8bf7\u5173\u6ce8\u5176\u4ed6\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1. \u4ec0\u4e48\u662f Session\uff1f Session\uff08\u4f1a\u8bdd\uff09\u662f\u4e00\u79cd\u5b58\u50a8\u5728\u670d\u52a1\u5668\u7aef\u7684\u7528\u6237\u6570\u636e\u673a\u5236\uff0c\u53ef\u4ee5\u5728\u591a\u4e2a\u9875\u9762\u95f4\u4fdd\u6301 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3055,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[80],"tags":[],"class_list":["post-3054","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-php"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3054","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=3054"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3054\/revisions"}],"predecessor-version":[{"id":3056,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3054\/revisions\/3056"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media\/3055"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=3054"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=3054"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=3054"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}