初用php 面向对象编程 感觉有点别扭...
因为一直做前端 用js
一般这样用
function xx(){
this.init.apply(this,arguments);
}
xx.prototype = {
options : {
//几个默认的属性
},
init : function(options){
$.extend(this,this.options,options);
//没有jquery 写一个extend也很容易
//.........
}
}
new xx(aa) //aa是一个对象 传一些参数
$.extend(this,this.options,options); 这个就是把 new的时候的参数 和默认的参数 一起给new出来的实例 很容易就实现了
今天写php的时候(同事告诉我要一个一个的赋值)
如下代码 (合并js css的东西 )
class mergeCompress<br> {<br> var $merge_arr;<br> var $commpress_arr;<br> var $type;<br> var $file_dir; //压缩合并后的目录<br> var $file_name; //压缩合并后的文件名<br> var $path_jar; // yui jar的路径<br> var $is_del = true; //压缩后的零散文件是否删除掉<br> var $errs = array();<br> public function __construct($commpress_arr=array(),$merge_arr=array(),$type="js",$file_dir="",$file_name="",$path_jar=""){<br> $this->type = $type;<br> $this->commpress_arr = $commpress_arr;<br> $this->merge_arr = $merge_arr;<br> $this->file_dir = $file_dir;<br> $this->file_name = $file_name;<br> $this->path_jar = $path_jar;<br> }<br> public function exec(){<br> $new_compress_arr = $this->compress();<br> <br> $this->merge_arr = array_merge($this->merge_arr,$new_compress_arr);<br> <br> $this->merge();<br> <br> if($this->is_del){<br> foreach($new_compress_arr as $i=>$url){<br> unlink($url);<br> }<br> } <br> }<br> public function compress(){<br> $new_compress_arr = array();<br> $temp = "java -jar {jar_path} --type {type} --charset utf-8 {source} > {compressor_source}";<br> $temp = str_replace("{jar_path}",$this->path_jar,$temp);<br> $temp = str_replace("{type}",$this->type,$temp);<br> $type = $this->type;<br> $file_dir = $this->file_dir;<br> foreach($this->commpress_arr as $i => $val){<br> if(!file_exists($val)){<br> array_push($this->errs,$val." Does not exist!!!! ");<br> continue;<br> }<br> $cmd = str_replace("{source}",$val,$temp);<br> $new_name = basename($val);<br> $new_name = substr($new_name,0,strrpos($new_name,".")).".min.".$type;<br> $file_new_name = $file_dir."/".$new_name;<br> $cmd = str_replace("{compressor_source}",$file_new_name,$cmd);<br> $arr = array();<br> exec($cmd,$arr,$is);<br> if($is != 0){<br> array_push($errs,$val." compress fail!!!! ");<br> }<br> array_push($new_compress_arr,$file_new_name);<br> }<br> return $new_compress_arr;<br> }<br> public function merge(){<br> $content="";<br> $file_name = $this->file_dir."/".$this->file_name;<br> <br> foreach($this->merge_arr as $i=>$url){<br> if(!file_exists($url)){<br> array_push($this->errs,$url." Does not exist!!!! "); <div class="clear"> </div>

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.

Setting the httponly flag is crucial for session cookies because it can effectively prevent XSS attacks and protect user session information. Specifically, 1) the httponly flag prevents JavaScript from accessing cookies, 2) the flag can be set through setcookies and make_response in PHP and Flask, 3) Although it cannot be prevented from all attacks, it should be part of the overall security policy.

PHPsessionssolvetheproblemofmaintainingstateacrossmultipleHTTPrequestsbystoringdataontheserverandassociatingitwithauniquesessionID.1)Theystoredataserver-side,typicallyinfilesordatabases,anduseasessionIDstoredinacookietoretrievedata.2)Sessionsenhances

PHPsessionscanstorestrings,numbers,arrays,andobjects.1.Strings:textdatalikeusernames.2.Numbers:integersorfloatsforcounters.3.Arrays:listslikeshoppingcarts.4.Objects:complexstructuresthatareserialized.

TostartaPHPsession,usesession_start()atthescript'sbeginning.1)Placeitbeforeanyoutputtosetthesessioncookie.2)Usesessionsforuserdatalikeloginstatusorshoppingcarts.3)RegeneratesessionIDstopreventfixationattacks.4)Considerusingadatabaseforsessionstoragei

Session regeneration refers to generating a new session ID and invalidating the old ID when the user performs sensitive operations in case of session fixed attacks. The implementation steps include: 1. Detect sensitive operations, 2. Generate new session ID, 3. Destroy old session ID, 4. Update user-side session information.


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