{"id":291,"date":"2013-02-03T22:39:09","date_gmt":"2013-02-03T22:39:09","guid":{"rendered":"9c838d2e45b2ad1094d42f4ef36764f6"},"modified":"2013-02-03T22:39:09","modified_gmt":"2013-02-03T22:39:09","slug":"","status":"publish","type":"post","link":"https:\/\/www.xiaobo.li\/notes\/archives\/291","title":{"rendered":"\u5f7b\u5e95\u7406\u89e3PHP\u7684SESSION\u673a\u5236"},"content":{"rendered":"

1<\/span>.<\/span>session<\/span>.<\/span>save_handler <\/span>=<\/span> files

\n

\n    <\/span>*<\/span> <\/span>1<\/span>.<\/span> <\/span>session_start<\/span>()

\n         <\/span>1<\/span>.<\/span> <\/span>session_start<\/span>()\u662fsession\u673a\u5236\u7684\u5f00\u59cb\uff0c\u5b83\u6709\u4e00\u5b9a\u6982\u7387\u5f00\u542f\u5783\u573e\u56de\u6536<\/span>,<\/span>\u56e0\u4e3asession\u662f\u5b58\u653e\u5728\u6587\u4ef6\u4e2d\uff0c

\nPHP\u81ea\u8eab\u7684\u5783\u573e\u56de\u6536\u662f\u65e0\u6548\u7684\uff0cSESSION\u7684\u56de\u6536\u662f\u8981\u5220\u6587\u4ef6\u7684\uff0c\u8fd9\u4e2a\u6982\u7387\u662f\u6839\u636ephp<\/span>.<\/span>ini\u7684\u914d\u7f6e\u51b3\u5b9a\u7684\uff0c

\n\u4f46\u662f\u6709\u7684\u7cfb\u7edf\u662f session<\/span>.<\/span>gc_probability <\/span>=<\/span> <\/span>0<\/span>\uff0c\u8fd9\u4e5f\u5c31\u662f\u8bf4\u6982\u7387\u662f0\uff0c\u800c\u662f\u901a\u8fc7cron\u811a\u672c\u6765\u5b9e\u73b0\u5783\u573e\u56de\u6536\u3002

\n

\n            session<\/span>.<\/span>gc_probability <\/span>=<\/span> <\/span>1<\/span>

\n            session<\/span>.<\/span>gc_divisor <\/span>=<\/span> <\/span>1000<\/span>

\n            session<\/span>.<\/span>gc_maxlifetime <\/span>=<\/span> <\/span>1440<\/span>\/\/<\/span>\u8fc7\u671f\u65f6\u95f4 \u9ed8\u8ba424\u5206\u949f

\n            \/\/\u6982\u7387\u662f session.gc_probability\/session.gc_divisor \u7ed3\u679c 1\/1000, 

\n            \/\/\u4e0d\u5efa\u8bae\u8bbe\u7f6e\u8fc7\u5c0f\uff0c\u56e0\u4e3asession\u7684\u5783\u573e\u56de\u6536\uff0c\u662f\u9700\u8981\u68c0\u67e5\u6bcf\u4e2a\u6587\u4ef6\u662f\u5426\u8fc7\u671f\u7684\u3002<\/span>

\n<\/span>            session<\/span>.<\/span>save_path <\/span>=<\/span> <\/span>\/\/<\/span>\u597d\u50cf\u4e0d\u540c\u7684\u7cfb\u7edf\u9ed8\u8ba4\u4e0d\u4e00\u6837\uff0c\u6709\u4e00\u79cd\u8bbe\u7f6e\u662f \"N;\/path\"

\n            \/\/\u8fd9\u662f\u968f\u673a\u5206\u7ea7\u5b58\u50a8\uff0c\u8fd9\u4e2a\u6837\u7684\u8bdd\uff0c\u5783\u573e\u56de\u6536\u5c06\u4e0d\u8d77\u4f5c\u7528\uff0c\u9700\u8981\u81ea\u5df1\u5199\u811a\u672c<\/span>

\n<\/span>

\n         <\/span>2<\/span>.<\/span> session\u4f1a\u5224\u65ad\u5f53\u524d\u662f\u5426\u6709<\/span>$_COOKIE<\/span>[<\/span>session_name<\/span>()];<\/span>session_name<\/span>()\u8fd4\u56de\u4fdd\u5b58session_id\u7684COOKIE\u952e\u503c\uff0c

\n\u8fd9\u4e2a\u503c\u53ef\u4ee5\u4ecephp<\/span>.<\/span>ini\u627e\u5230

\n

\n            session<\/span>.<\/span>name <\/span>=<\/span> PHPSESSID <\/span>\/\/<\/span>\u9ed8\u8ba4\u503cPHPSESSID<\/span>

\n<\/span>             

\n

\n         <\/span>3<\/span>.<\/span> \u5982\u679c\u4e0d\u5b58\u5728\u4f1a\u751f\u6210\u4e00\u4e2asession_id<\/span>,<\/span>\u7136\u540e\u628a\u751f\u6210\u7684session_id\u4f5c\u4e3aCOOKIE\u7684\u503c\u4f20\u9012\u5230\u5ba2\u6237\u7aef<\/span>.<\/span>

\n\u76f8\u5f53\u4e8e\u6267\u884c\u4e86\u4e0b\u9762COOKIE \u64cd\u4f5c\uff0c\u6ce8\u610f\u7684\u662f\uff0c\u8fd9\u4e00\u6b65\u6267\u884c\u4e86setcookie()\u64cd\u4f5c\uff0cCOOKIE\u662f\u5728header\u5934\u4e2d\u53d1\u9001\u7684\uff0c

\n\u8fd9\u4e4b\u524d\u662f\u4e0d\u80fd\u6709\u8f93\u51fa\u7684\uff0cPHP\u6709\u53e6\u5916\u4e00\u4e2a\u51fd\u6570 <\/span>session_regenerate_id<\/span>() \u5982\u679c\u4f7f\u7528\u8fd9\u4e2a\u51fd\u6570\uff0c\u8fd9\u4e4b\u524d\u4e5f\u662f\u4e0d\u80fd\u6709\u8f93\u51fa\u7684\u3002

\n

\n                <\/span>setcookie<\/span>(<\/span>session_name<\/span>()<\/span>,<\/span>

\n                          <\/span>session_id<\/span>()<\/span>,<\/span>

\n                          session<\/span>.<\/span>cookie_lifetime<\/span>,<\/span>\/\/<\/span>\u9ed8\u8ba40<\/span>

\n<\/span>                          session<\/span>.<\/span>cookie_path<\/span>,<\/span>\/\/<\/span>\u9ed8\u8ba4'\/'\u5f53\u524d\u7a0b\u5e8f\u8ddf\u76ee\u5f55\u4e0b\u90fd\u6709\u6548<\/span>

\n<\/span>                          session<\/span>.<\/span>cookie_domain<\/span>,<\/span>\/\/<\/span>\u9ed8\u8ba4\u4e3a\u7a7a<\/span>

\n<\/span>                          )

\n

\n         <\/span>4<\/span>.<\/span> \u5982\u679c\u5b58\u5728\u90a3\u4e48session_id <\/span>=<\/span> <\/span>$_COOKIE<\/span>[<\/span>session_name<\/span>];

\n            \u7136\u540e\u53bbsession<\/span>.<\/span>save_path\u6307\u5b9a\u7684\u6587\u4ef6\u5939\u91cc\u53bb\u627e\u540d\u5b57\u4e3a<\/span>'<\/span>SESS_<\/span>'<\/span> <\/span>.<\/span> <\/span>session_id<\/span>()\u7684\u6587\u4ef6<\/span>.<\/span>

\n            \u8bfb\u53d6\u6587\u4ef6\u7684\u5185\u5bb9\u53cd\u5e8f\u5217\u5316\uff0c\u7136\u540e\u653e\u5230<\/span>$_SESSION\u4e2d<\/span>

\n    <\/span>*<\/span> <\/span>2<\/span>.<\/span> \u4e3a<\/span>$_SESSION\u8d4b\u503c<\/span>

\n      \u6bd4\u5982\u65b0\u6dfb\u52a0\u4e00\u4e2a\u503c<\/span>$_SESSION<\/span>[<\/span>'<\/span>test<\/span>'<\/span>] <\/span>=<\/span> <\/span>'<\/span>blah<\/span>'<\/span>; \u90a3\u4e48\u8fd9\u4e2a<\/span>$_SESSION\u53ea\u4f1a\u7ef4\u62a4\u5728\u5185\u5b58\u4e2d<\/span>\uff0c\u5f53\u811a\u672c\u6267\u884c\u7ed3\u675f\u7684\u65f6\u5019\uff0c

\n\u7528\u628a<\/span>$_SESSION\u7684\u503c\u5199\u5165\u5230session_id\u6307\u5b9a\u7684\u6587\u4ef6\u5939\u4e2d<\/span>\uff0c\u7136\u540e\u5173\u95ed\u76f8\u5173\u8d44\u6e90<\/span>.<\/span>      \u8fd9\u4e2a\u9636\u6bb5\u6709\u53ef\u80fd\u6267\u884c\u66f4\u6539session_id\u7684\u64cd\u4f5c\uff0c

\n\u6bd4\u5982\u9500\u6bc1\u4e00\u4e2a\u65e7\u7684\u7684session_id\uff0c\u751f\u6210\u4e00\u4e2a\u5168\u65b0\u7684session_id<\/span>.<\/span>\u4e00\u534a\u7528\u5728\u81ea\u5b9a\u4e49 session\u64cd\u4f5c\uff0c\u89d2\u8272\u7684\u8f6c\u6362\u4e0a\uff0c

\n\u6bd4\u5982Drupal<\/span>.<\/span>Drupal\u7684\u533f\u540d\u7528\u6237\u6709\u4e00\u4e2aSESSION\u7684\uff0c\u5f53\u5b83\u767b\u5f55\u540e\u9700\u8981\u6362\u7528\u65b0\u7684session_id

\n

\n        <\/span>if<\/span> (<\/span>isset<\/span>(<\/span>$_COOKIE<\/span>[<\/span>session_name<\/span>()])) {

\n          <\/span>setcookie<\/span>(<\/span>session_name<\/span>()<\/span>,<\/span> <\/span>''<\/span>,<\/span> <\/span>time<\/span>() <\/span>-<\/span> <\/span>42000<\/span>,<\/span> <\/span>'<\/span>\/<\/span>'<\/span>);<\/span>\/\/<\/span>\u65e7session cookie\u8fc7\u671f<\/span>

\n<\/span>        }

\n        <\/span>session_regenerate_id<\/span>();<\/span>\/\/<\/span>\u8fd9\u4e00\u6b65\u4f1a\u751f\u6210\u65b0\u7684session_id

\n       \/\/session_id()\u8fd4\u56de\u7684\u662f\u65b0\u7684\u503c<\/span>

\n<\/span>

\n      <\/span>3<\/span>.<\/span>\u5199\u5165SESSION\u64cd\u4f5c

\n      \u5728\u811a\u672c\u7ed3\u675f\u7684\u65f6\u5019\u4f1a\u6267\u884cSESSION\u5199\u5165\u64cd\u4f5c\uff0c\u628a<\/span>$_SESSION\u4e2d\u503c\u5199\u5165\u5230session_id\u547d\u540d\u7684\u6587\u4ef6\u4e2d<\/span>\uff0c\u53ef\u80fd\u5df2\u7ecf\u5b58\u5728\uff0c

\n\u53ef\u80fd\u9700\u8981\u521b\u5efa\u65b0\u7684\u6587\u4ef6\u3002

\n    <\/span>*<\/span> <\/span>4<\/span>.<\/span> \u9500\u6bc1SESSION

\n      SESSION\u53d1\u51fa\u53bb\u7684COOKIE\u4e00\u822c\u5c5e\u4e8e\u5373\u65f6COOKIE\uff0c\u4fdd\u5b58\u5728\u5185\u5b58\u4e2d\uff0c\u5f53\u6d4f\u89c8\u5668\u5173\u95ed\u540e\uff0c\u624d\u4f1a\u8fc7\u671f\uff0c\u5047\u5982\u9700\u8981\u4eba\u4e3a\u5f3a\u5236\u8fc7\u671f\uff0c

\n\u6bd4\u5982 \u9000\u51fa\u767b\u5f55\uff0c\u800c\u4e0d\u662f\u5173\u95ed\u6d4f\u89c8\u5668\uff0c\u90a3\u4e48\u5c31\u9700\u8981\u5728\u4ee3\u7801\u91cc\u9500\u6bc1SESSION\uff0c\u65b9\u6cd5\u6709\u5f88\u591a\uff0c

\n          o <\/span>1<\/span>.<\/span> <\/span>setcookie<\/span>(<\/span>session_name<\/span>()<\/span>,<\/span> <\/span>session_id<\/span>()<\/span>,<\/span> <\/span>time<\/span>() <\/span>-<\/span> <\/span>8000000<\/span>,<\/span> <\/span>..<\/span>);<\/span>\/\/<\/span>\u9000\u51fa\u767b\u5f55\u524d\u6267\u884c<\/span>

\n<\/span>          o <\/span>2<\/span>.<\/span> usset(<\/span>$_SESSION<\/span>);<\/span>\/\/<\/span>\u8fd9\u4f1a\u5220\u9664\u6240\u6709\u7684$_SESSION\u6570\u636e\uff0c\u5237\u65b0\u540e\uff0c\u6709COOKIE\u4f20\u8fc7\u6765\uff0c\u4f46\u662f\u6ca1\u6709\u6570\u636e\u3002<\/span>

\n<\/span>          o <\/span>3<\/span>.<\/span> <\/span>session_destroy<\/span>();<\/span>\/\/<\/span>\u8fd9\u4e2a\u4f5c\u7528\u66f4\u5f7b\u5e95\uff0c\u5220\u9664$_SESSION \u5220\u9664session\u6587\u4ef6\uff0c\u548csession_id<\/span>

\n<\/span>

\n      \u5f53\u4e0d\u5173\u95ed\u6d4f\u89c8\u5668\u7684\u60c5\u51b5\u4e0b\uff0c\u518d\u6b21\u5237\u65b0\uff0c2\u548c3\u90fd\u4f1a\u6709COOKIE\u4f20\u8fc7\u6765\uff0c\u4f46\u662f\u627e\u4e0d\u5230\u6570\u636e

\n

\n<\/span>2<\/span>.<\/span>session<\/span>.<\/span>save_handler <\/span>=<\/span> user

\n

\n      \u7528\u6237\u81ea\u5b9a\u4e49session\u5904\u7406\u673a\u5236\uff0c\u66f4\u52a0\u76f4\u89c2

\n    <\/span>*<\/span> <\/span>session_set_save_handler<\/span>(<\/span>'<\/span>open<\/span>'<\/span>,<\/span> <\/span>'<\/span>close<\/span>'<\/span>,<\/span> <\/span>'<\/span>read<\/span>'<\/span>,<\/span> <\/span>'<\/span>write<\/span>'<\/span>,<\/span> <\/span>'<\/span>destroy<\/span>'<\/span>,<\/span> <\/span>'<\/span>gc<\/span>'<\/span>); 

\n<\/span>1<\/span>.<\/span>session_start<\/span>()<\/span>,<\/span>

\n      \u6267\u884copen(<\/span>$save_path<\/span>,<\/span> <\/span>$session_name<\/span>)\u6253\u5f00session\u64cd\u4f5c\u53e5\u67c4

\n      <\/span>$save_path<\/span> \u5728session<\/span>.<\/span>save_handler <\/span>=<\/span> files\u7684\u60c5\u51b5\u4e0b\u5b83\u5c31\u662fsession<\/span>.<\/span>save_path\uff0c

\n\u4f46\u662f\u5982\u679c\u7528\u6237\u81ea\u5b9a\u7684\u8bdd\uff0c\u8fd9\u4e2a\u4e24\u4e2a\u53c2\u6570\u90fd\u7528\u4e0d\u4e0a\uff0c\u76f4\u63a5\u8fd4\u56deTRUE

\n

\n      \u6267\u884cread(<\/span>$id<\/span>)\u4ece\u4e2d\u8bfb\u53d6\u6570\u636e<\/span>.<\/span>\/\/<\/span>\u8fd9\u4e2a\u53c2\u6570\u662f\u81ea\u52a8\u4f20\u9012\u7684\u5c31\u662fsession_id(),\u53ef\u4ee5\u901a\u8fc7\u8fd9\u4e2a\u503c\u8fdb\u884c\u64cd\u4f5c\u3002<\/span>

\n<\/span>    <\/span>*<\/span> <\/span>2<\/span>.<\/span>\u811a\u672c\u6267\u884c\u7ed3\u675f

\n      \u6267\u884cwrite(<\/span>$id<\/span>,<\/span> <\/span>$sess_data<\/span>) <\/span>\/\/<\/span>\u4e24\u4e2a\u53c2\u6570\uff0c\u5f88\u7b80\u5355<\/span>

\n<\/span>    <\/span>*<\/span> <\/span>3<\/span>.<\/span>\u5047\u5982\u7528\u6237\u9700\u8981session_destroy()

\n      \u5148\u6267\u884cdestroy<\/span>.<\/span>\u5728\u6267\u884c\u7b2c2\u6b65

\n

\n      \u4e00\u4e2a\u5b9e\u9645\u4f8b\u5b50\uff1a

\n

\n      <\/span>\/\/<\/span>SESSION\u521d\u59cb\u5316\u7684\u65f6\u5019\u8c03\u7528<\/span>

\n<\/span>      <\/span>function<\/span> open(<\/span>$save_path<\/span>,<\/span> <\/span>$session_name<\/span>)

\n      {

\n        <\/span>global<\/span> <\/span>$sess_save_path<\/span>;

\n        <\/span>$sess_save_path<\/span> <\/span>=<\/span> <\/span>$save_path<\/span>;

\n        <\/span>return<\/span>(<\/span>true<\/span>);

\n      }

\n

\n      <\/span>\/\/<\/span>\u5173\u95ed\u7684\u65f6\u5019\u8c03\u7528<\/span>

\n<\/span>      <\/span>function<\/span> close()

\n      {

\n        <\/span>return<\/span>(<\/span>true<\/span>);

\n      }

\n

\n      <\/span>function<\/span> read(<\/span>$id<\/span>)

\n      {

\n        <\/span>global<\/span> <\/span>$sess_save_path<\/span>;

\n        <\/span>$sess_file<\/span> <\/span>=<\/span> <\/span>\"<\/span>$sess_save_path<\/span>\/sess_<\/span>$id<\/span>\"<\/span>;

\n        <\/span>return<\/span> (<\/span>string<\/span>) @<\/span>file_get_contents<\/span>(<\/span>$sess_file<\/span>);

\n      }

\n      <\/span>\/\/<\/span>\u811a\u672c\u6267\u884c\u7ed3\u675f\u4e4b\u524d\uff0c\u6267\u884c\u5199\u5165\u64cd\u4f5c<\/span>

\n<\/span>      <\/span>function<\/span> write(<\/span>$id<\/span>,<\/span> <\/span>$sess_data<\/span>)

\n      {

\n        <\/span>echo<\/span> <\/span>\"<\/span>sdfsf<\/span>\"<\/span>;

\n        <\/span>global<\/span> <\/span>$sess_save_path<\/span>;

\n

\n        <\/span>$sess_file<\/span> <\/span>=<\/span> <\/span>\"<\/span>$sess_save_path<\/span>\/sess_<\/span>$id<\/span>\"<\/span>;

\n        <\/span>if<\/span> (<\/span>$fp<\/span> <\/span>=<\/span> @<\/span>fopen<\/span>(<\/span>$sess_file<\/span>,<\/span> <\/span>\"<\/span>w<\/span>\"<\/span>)) {

\n          <\/span>$return<\/span> <\/span>=<\/span> <\/span>fwrite<\/span>(<\/span>$fp<\/span>,<\/span> <\/span>$sess_data<\/span>);

\n          <\/span>fclose<\/span>(<\/span>$fp<\/span>);

\n          <\/span>return<\/span> <\/span>$return<\/span>;

\n        } <\/span>else<\/span> {

\n          <\/span>return<\/span>(<\/span>false<\/span>);

\n        }

\n

\n      }

\n

\n      <\/span>function<\/span> destroy(<\/span>$id<\/span>)

\n      {

\n        <\/span>global<\/span> <\/span>$sess_save_path<\/span>;

\n

\n        <\/span>$sess_file<\/span> <\/span>=<\/span> <\/span>\"<\/span>$sess_save_path<\/span>\/sess_<\/span>$id<\/span>\"<\/span>;

\n        <\/span>return<\/span>(@<\/span>unlink<\/span>(<\/span>$sess_file<\/span>));

\n      }

\n

\n      <\/span>function<\/span> gc(<\/span>$maxlifetime<\/span>)

\n      {

\n        <\/span>global<\/span> <\/span>$sess_save_path<\/span>;

\n

\n        <\/span>foreach<\/span> (<\/span>glob<\/span>(<\/span>\"<\/span>$sess_save_path<\/span>\/sess_*<\/span>\"<\/span>) <\/span>as<\/span> <\/span>$filename<\/span>) {

\n          <\/span>if<\/span> (<\/span>filemtime<\/span>(<\/span>$filename<\/span>) <\/span>+<\/span> <\/span>$maxlifetime<\/span> <\/span><<\/span> <\/span>time<\/span>()) {

\n            @<\/span>unlink<\/span>(<\/span>$filename<\/span>);

\n          }

\n        }

\n        <\/span>return<\/span> <\/span>true<\/span>;

\n      }<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

1<\/span>.<\/span>session<\/span>.<\/span>save_handler <\/span>=<\/span> files


\n    <\/span>*<\/span> <\/span>1<\/span>.<\/span> <\/span>session_start<\/span>()

\n         <\/span>1<\/span>.<\/span> <\/span>session_start<\/span>()\u662fsession\u673a\u5236\u7684\u5f00\u59cb\uff0c\u5b83\u6709\u4e00\u5b9a\u6982\u7387\u5f00\u542f\u5783\u573e\u56de\u6536<\/span>,<\/span>\u56e0\u4e3asession\u662f\u5b58\u653e\u5728\u6587\u4ef6\u4e2d\uff0c

\nPHP\u81ea\u8eab\u7684\u5783\u573e\u56de\u6536\u662f\u65e0\u6548\u7684\uff0cSESSION\u7684\u56de\u6536\u662f\u8981\u5220\u6587\u4ef6\u7684\uff0c\u8fd9\u4e2a\u6982\u7387\u662f\u6839\u636ephp<\/span>.<\/span>ini\u7684\u914d\u7f6e\u51b3\u5b9a\u7684\uff0c

\n\u4f46\u662f\u6709\u7684\u7cfb\u7edf\u662f session<\/span>.<\/span>gc_proba...<\/span> \u7ee7\u7eed\u9605\u8bfb →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[278],"tags":[27,105],"class_list":["post-291","post","type-post","status-publish","format-standard","hentry","category-php","tag-php","tag-session"],"_links":{"self":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts\/291","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/comments?post=291"}],"version-history":[{"count":0,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts\/291\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/media?parent=291"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/categories?post=291"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/tags?post=291"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}