public function actionChangetemplate() { $status=true; $interactive_id= (int)filter_input(INPUT_POST,'id');//post[id] $template_id= (int) filter_input(INPUT_POST, 'mb'); //找到页 $interactives = Interactives::model ()->findByPk ( $interactive_id ); //获取模板 $interactiveTemplate = InteractiveTemplate::model ()->findByPk ( $template_id ); //修改模板 $interactives->template_id =$template_id; $interactives->save(); // 根据用户选择的模板来设置不同的内容 $template_info = $interactiveTemplate->template_content; $interactiveContent = new InteractiveContent (); $interactivePic = new InteractivePic(); //添加内容,以下根据content进行正则表达式匹配,生成相对应的content if (preg_match_all ( '/preview_t_[0-9]+/', $template_info, $arr )) { //删除 $res = InteractiveContent::model ()->deleteAll ("interactive_id=:ID",array( ":ID"=>$interactive_id ) ); foreach ($arr[0] as $key=>$value){ $content = new InteractiveContent (); $content->interactive_id =$interactive_id; $content->color = "rgba(0,0,0,0.1)"; $content->content = '<p style='\"text-align:left;\"'>\n\t<span style='\"color:#000000;line-height:1.5;font-size:24px;\"'><strong>文本输入框\n\n<p style='\"text-align:left;\"'>\n\t<span style='\"color:#000000;line-height:1.5;font-size:16px;\"'>您可以进行文本输入、复制、黏贴;调整字体大小、颜色、对齐、行间距;也可以对文本框本身设置相应的背景颜色以及透明度。\n'; $content->c_time = date ( "y-m-d H:i:s" ); $ret=$content->save (); if($ret>0)//如果正确,则结果为true $status=$status&true; else $status=$status&false; } } //添加图片 if (preg_match_all ( '/preview_p_[0-9]+/', $template_info, $arr )) { //删除 $res = InteractivePic::model ()->deleteAll ("interactive_id=:ID",array( ":ID"=>$_POST ['id'] ) ); for($i = 1; $i interactive_id = $_POST ['id']; $interactivePic->pic_scale = 2.2; $interactivePic->pic_src = "/images/editinteractive/pcover_000.jpg"; $interactivePic->pic_width = 30; $interactivePic->pic_height =30; $interactivePic->pic_x = 0; $interactivePic->pic_y =0; $interactivePic->tag = $i; $interactivePic->c_time = date ( "y-m-d H:i:s" ); $ret=$interactivePic->save(); if($ret>0)//如果正确,则结果为true $status=$status&true; else $status=$status&false; } } if (preg_match_all ( '/preview_s1_1_p[0-9]+/', $template_info, $arr )) { //删除 $res = InteractivePic::model ()->deleteAll ("interactive_id=:ID",array( ":ID"=>$_POST ['id'] ) ); for($i = 1; $i interactive_id = $_POST ['id']; $interactivePic->pic_scale = 2.2; $interactivePic->pic_src = "/images/editinteractive/pcover_000.jpg"; $interactivePic->pic_width = 33; $interactivePic->pic_height =44; $interactivePic->pic_x = 33; $interactivePic->pic_y =44; $interactivePic->tag = 33; $interactivePic->c_time = date ( "y-m-d H:i:s" ); $ret=$interactivePic->save(); if($ret>0)//如果正确,则结果为true $status=$status&true; else $status=$status&false; } } if (preg_match_all ( '/preview_s1_1_t[0-9]+/', $template_info, $arr )) { //删除 $res = InteractiveContent::model ()->deleteAll ("interactive_id=:ID",array( ":ID"=>$_POST ['id'] ) ); foreach ($arr[0] as $key=>$value){ $content = new InteractiveContent (); $content->interactive_id = $_POST ['id']; $content->color = "rgba(0,0,0,0.1)"; $content->content = '<p style='\"text-align:left;\"'>\n\t<span style='\"color:#000000;line-height:1.5;font-size:24px;\"'><strong>文本输入框\n\n<p style='\"text-align:left;\"'>\n\t<span style='\"color:#000000;line-height:1.5;font-size:16px;\"'>您可以进行文本输入、复制、黏贴;调整字体大小、颜色、对齐、行间距;也可以对文本框本身设置相应的背景颜色以及透明度。\n'; $content->c_time = date ( "y-m-d H:i:s" ); $ret=$content->save (); if($ret>0)//如果正确,则结果为true $status=$status&true; else $status=$status&false; } } if (preg_match_all ( '/preview_s1_1_t_[0-9]+/', $template_info, $arr )) { //删除 $res = InteractiveContent::model ()->deleteAll ("interactive_id=:ID",array( ":ID"=>$_POST ['id'] ) ); foreach ($arr[0] as $key=>$value){ $content = new InteractiveContent (); $content->interactive_id = $_POST ['id']; $content->color = "rgba(0,0,0,0.1)"; $content->content = '<p style='\"text-align:left;\"'>\n\t<span style='\"color:#000000;line-height:1.5;font-size:24px;\"'><strong>文本输入框\n\n<p style='\"text-align:left;\"'>\n\t<span style='\"color:#000000;line-height:1.5;font-size:16px;\"'>您可以进行文本输入、复制、黏贴;调整字体大小、颜色、对齐、行间距;也可以对文本框本身设置相应的背景颜色以及透明度。\n'; $content->c_time = date ( "y-m-d H:i:s" ); $ret=$content->save (); if($ret>0)//如果正确,则结果为true $status=$status&true; else $status=$status&false; } } if ($status) { echo json_encode ( array ( //success 'status' => 'success' ) ); } else { echo json_encode ( array ( 'status' => 'fail' ) ); } }</span></p></strong></span></p></span></p></strong></span></p></span></p></strong></span></p>
The above introduces the acquisition of template functions, including aspects of the content. I hope it will be helpful to friends who are interested in PHP tutorials.

Thedifferencebetweenunset()andsession_destroy()isthatunset()clearsspecificsessionvariableswhilekeepingthesessionactive,whereassession_destroy()terminatestheentiresession.1)Useunset()toremovespecificsessionvariableswithoutaffectingthesession'soveralls

Stickysessionsensureuserrequestsareroutedtothesameserverforsessiondataconsistency.1)SessionIdentificationassignsuserstoserversusingcookiesorURLmodifications.2)ConsistentRoutingdirectssubsequentrequeststothesameserver.3)LoadBalancingdistributesnewuser

PHPoffersvarioussessionsavehandlers:1)Files:Default,simplebutmaybottleneckonhigh-trafficsites.2)Memcached:High-performance,idealforspeed-criticalapplications.3)Redis:SimilartoMemcached,withaddedpersistence.4)Databases:Offerscontrol,usefulforintegrati

Session in PHP is a mechanism for saving user data on the server side to maintain state between multiple requests. Specifically, 1) the session is started by the session_start() function, and data is stored and read through the $_SESSION super global array; 2) the session data is stored in the server's temporary files by default, but can be optimized through database or memory storage; 3) the session can be used to realize user login status tracking and shopping cart management functions; 4) Pay attention to the secure transmission and performance optimization of the session to ensure the security and efficiency of the application.

PHPsessionsstartwithsession_start(),whichgeneratesauniqueIDandcreatesaserverfile;theypersistacrossrequestsandcanbemanuallyendedwithsession_destroy().1)Sessionsbeginwhensession_start()iscalled,creatingauniqueIDandserverfile.2)Theycontinueasdataisloade

Absolute session timeout starts at the time of session creation, while an idle session timeout starts at the time of user's no operation. Absolute session timeout is suitable for scenarios where strict control of the session life cycle is required, such as financial applications; idle session timeout is suitable for applications that want users to keep their session active for a long time, such as social media.

The server session failure can be solved through the following steps: 1. Check the server configuration to ensure that the session is set correctly. 2. Verify client cookies, confirm that the browser supports it and send it correctly. 3. Check session storage services, such as Redis, to ensure that they are running normally. 4. Review the application code to ensure the correct session logic. Through these steps, conversation problems can be effectively diagnosed and repaired and user experience can be improved.

session_start()iscrucialinPHPformanagingusersessions.1)Itinitiatesanewsessionifnoneexists,2)resumesanexistingsession,and3)setsasessioncookieforcontinuityacrossrequests,enablingapplicationslikeuserauthenticationandpersonalizedcontent.


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