


php implements encryption and decryption of php code_PHP tutorial
php 实现php代码的加密解密
php 代码加密类,大家可以根据自己的需求进行修改,原类如下,是对之前的加密解密类的有一次修改,希望能分享给大家。本次在ubuntu下测试没有问题,与之前的版本的区别在于,这次的版本更加的通用性。
<!--?php /* * @auther:wangyaofeng * @time:2014.11.6 * @action:对php项目进行加密处理,注意如果项目中存在框架目录或没有必要加密的目录,请提前移出 * */ class Encryption{ private $c='';//存储密文 private $s='',$q1,$q2,$q3,$q4,$q5,$q6;//存储生成的加密后的文件内容 //如果不设置一个值,isset会表示不存在; private $file='';//读取文件的路径 private $source='',$target=''; //构造函数,实例化时调用初始化全局变量; public function __construct(){ //初始化全局变量 $this--->initialVar(); //echo "hello \n"; } /* *@input $property_name,$value *@output * 魔法方法,对变量进行设置值;可根据需求进行处理。若直接去除if判断表示可用设置任何属性的值,包括不存在的属性; */ public function __set($property_name,$value){ //定义过的变量; if(isset($this->$property_name)){ $this->$property_name = $value; }else{ //异常处理,处理未声明的变量赋值;可根据需求进行处理。 throw new Exception("property does not exist"); } } //魔法方法 取出变量的值; public function __get($property_name){ if(isset($this->$property_name)){ return $this->$property_name; }else{ //throw new Exception("property does not exist"); return NULL; } } //取随机排序 private function RandAbc($length=""){//随机排序取回 $str="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; return str_shuffle($str); } //对明文内容进行加密处理 private function ciphertext($filename){ //$filename='index.php'; $T_k1=$this->RandAbc(); $T_k2=$this->RandAbc(); $vstr=file_get_contents($filename); $v1=base64_encode($vstr); $c=strtr($v1,$T_k1,$T_k2); $this->c=$T_k1.$T_k2.$c; return $this; } //初始化变量 private function initialVar(){ $this->q1="O00O0O";//base64_decode $this->q2="O0O000";//$c(原文经过strtr置换后的密文,由 目标字符+替换字符+base64_encode(‘原文内容’)构成) $this->q3="O0OO00";//strtr $this->q4="OO0O00";//substr $this->q5="OO0000";//52 $this->q6="O00OO0";//urldecode解析过的字符串(n1zb/ma5\vt0i28-pxuqy*6%6Crkdg9_ehcswo4+f37j) } //生成加密后的模板(复杂版本); private function model(){ //$c = $this->c; //$this->initialVar(); $this->s='<!--?php $'.$this--->q6.'=urldecode("%6E1%7A%62%2F%6D%615%5C%76%740%6928%2D%70%78%75%71%79%2A6%6C%72%6B%64%679%5F%65%68%63%73%77%6F4%2B%6637%6A");$'. $this->q1.'=$'.$this->q6.'{3}.$'.$this->q6.'{6}.$'.$this->q6.'{33}.$'.$this->q6.'{30};$'.$this->q3.'=$'.$this->q6.'{33}.$'.$this->q6.'{10}.$' .$this->q6.'{24}.$'.$this->q6.'{10}.$'.$this->q6.'{24};$'.$this->q4.'=$'.$this->q3.'{0}.$'.$this->q6.'{18}.$'.$this->q6.'{3}.$'.$this->q3.'{0} .$'.$this->q3.'{1}.$'.$this->q6.'{24};$'.$this->q5.'=$'.$this->q6.'{7}.$'.$this->q6.'{13};$'.$this->q1.'.=$'.$this->q6.'{22}.$'.$this->q6.'{36} .$'.$this->q6.'{29}.$'.$this->q6.'{26}.$'.$this->q6.'{30}.$'.$this->q6.'{32}.$'.$this->q6.'{35}.$'.$this->q6.'{26}.$'.$this->q6.'{30}; eval($'.$this->q1.'("'.base64_encode('$'.$this->q2.'="'.$this->c.'"; eval(\'?>\'.$'.$this->q1.'($'.$this->q3.'($'.$this->q4.'($'.$this->q2.',$'.$this->q5.'*2),$'.$this->q4.'($'.$this->q2.',$'.$this->q5.',$'.$this->q5.'), $'.$this->q4.'($'.$this->q2.',0,$'.$this->q5.'))));').'"));?>'; return $this; } //创建加密文件 private function build($target){ //$this->encodes("./index.php"); //$this->model(); $fpp1 = fopen($target,'w'); fwrite($fpp1,$this->s) or die('写入是失败!'); fclose($fpp1); return $this; } //加密处理 连贯操作 public function encode($file,$target){ //$file = "index.php"; //连贯操作其实就是利用函数处理完后返回自身 $this->ciphertext($file)->model()->build($target); echo 'encode------'.$target.'-----ok '; } //解密 public function decode($file,$target=''){ //读取要解密的文件 $fpp1 = file_get_contents($file); $this->decodeMode($fpp1)->build($target); echo 'decode------'.$target.'-----ok '; } //解密模板,得到解密后的文本 private function decodeMode($fpp1){ //以eval为标志 截取为数组,前半部分为密文中的替换掉的函数名,后半部分为密文 $m = explode('eval',$fpp1); //对系统函数的替换部分进行执行,得到系统变量 $varStr = substr($m[0],strpos($m[0],'$')); //执行后,后续就可以使用替换后的系统函数名 eval($varStr); //判断是否有密文 if(!isset($m[1])){ return $this; } //对密文进行截取 {$this->q4} substr $star = strripos($m[1],'('); $end = strpos($m[1],')'); $str = ${$this->q4}($m[1],$star,$end); //对密文解密 {$this->q1} base64_decode $str = ${$this->q1}($str); //截取出解密后的 核心密文 $evallen = strpos($str,'eval'); $str = substr($str,0,$evallen); //执行核心密文 使系统变量被赋予值 $O0O000 eval($str); //并不能将如下段封装,因为 ${$this->qn} 并不能在全文中起作用 $this->s = ${$this->q1}( ${$this->q3}( ${$this->q4}( ${$this->q2},${$this->q5}*2 ), ${$this->q4}( ${$this->q2},${$this->q5},${$this->q5} ), ${$this->q4}( ${$this->q2},0,${$this->q5} ) ) ); return $this; } //递归读取并创建目标目录结构 private function targetDir($target){ if(!empty($target) ) { if(!file_exists($target)){ mkdir($target,0777,true); }else{ chmod($target,0777); } } } //递归解密 对指定文件夹下的php文件解密 public function decodeDir($source,$target=""){ if(is_dir($source)){ $this->targetDir($target); $dir = opendir($source); while(false!=$file=readdir($dir)) { //列出所有文件并去掉'.'和'..' 此处用的实例为thinkphp框架,所以默认排除里Thinkphp目录,用户可以按照自己的需求设置 if($file!='.' && $file!='..' && $file !='ThinkPHP') { $path = $target.DIRECTORY_SEPARATOR.$file; $sourcePath = $source.DIRECTORY_SEPARATOR.$file; $this->decodeDir($sourcePath,$path); } } }else if(is_file($source)){ $extension=substr($source,strrpos($source,'.')+1); if(strtolower($extension)=='php'){ $this->decode($source,$target); }else{ //不是php的文件不处理 copy($source, $target); } //return; } } //递归加密 对指定文件夹下的php文件加密 public function encodeDir($source,$target){ if(is_dir($source)){ $this->targetDir($target); $dir = opendir($source); while(false!=$file=readdir($dir)) { //列出所有文件并去掉'.'和'..' if($file!='.' && $file!='..' && $file !='ThinkPHP') { $path = $target.DIRECTORY_SEPARATOR.$file; $sourcePath = $source.DIRECTORY_SEPARATOR.$file; $this->encodeDir($sourcePath,$path); } } }else if(is_file($source)){ $extension=substr($source,strrpos($source,'.')+1); if(strtolower($extension)=='php'){ $this->encode($source,$target); }else{ copy($source, $target); } } } } $ob = new Encryption(); $ob->source = "/var/www/bookReservation"; $ob->target = "/var/www/jiami/bookReservation"; //解密指定文件 //$ob->decode('D:\\php\\WWW\\workspace\\weixin2\\Application\\Home\\Controller\\IndexController.class.php'); //$ob->decode('jiami.php'); //$ob->decode('dam6.php'); //对一个指定的文件目录进行加密 $ob->encodeDir($ob->source,$ob->target); //对一个指定的文件目录进行解密 $ob->decodeDir($ob->target,"/var/www/jiami/bookReservationD");

TomakePHPapplicationsfaster,followthesesteps:1)UseOpcodeCachinglikeOPcachetostoreprecompiledscriptbytecode.2)MinimizeDatabaseQueriesbyusingquerycachingandefficientindexing.3)LeveragePHP7 Featuresforbettercodeefficiency.4)ImplementCachingStrategiessuc

ToimprovePHPapplicationspeed,followthesesteps:1)EnableopcodecachingwithAPCutoreducescriptexecutiontime.2)ImplementdatabasequerycachingusingPDOtominimizedatabasehits.3)UseHTTP/2tomultiplexrequestsandreduceconnectionoverhead.4)Limitsessionusagebyclosin

Dependency injection (DI) significantly improves the testability of PHP code by explicitly transitive dependencies. 1) DI decoupling classes and specific implementations make testing and maintenance more flexible. 2) Among the three types, the constructor injects explicit expression dependencies to keep the state consistent. 3) Use DI containers to manage complex dependencies to improve code quality and development efficiency.

DatabasequeryoptimizationinPHPinvolvesseveralstrategiestoenhanceperformance.1)Selectonlynecessarycolumnstoreducedatatransfer.2)Useindexingtospeedupdataretrieval.3)Implementquerycachingtostoreresultsoffrequentqueries.4)Utilizepreparedstatementsforeffi

PHPisusedforsendingemailsduetoitsbuilt-inmail()functionandsupportivelibrarieslikePHPMailerandSwiftMailer.1)Usethemail()functionforbasicemails,butithaslimitations.2)EmployPHPMailerforadvancedfeatureslikeHTMLemailsandattachments.3)Improvedeliverability

PHP performance bottlenecks can be solved through the following steps: 1) Use Xdebug or Blackfire for performance analysis to find out the problem; 2) Optimize database queries and use caches, such as APCu; 3) Use efficient functions such as array_filter to optimize array operations; 4) Configure OPcache for bytecode cache; 5) Optimize the front-end, such as reducing HTTP requests and optimizing pictures; 6) Continuously monitor and optimize performance. Through these methods, the performance of PHP applications can be significantly improved.

DependencyInjection(DI)inPHPisadesignpatternthatmanagesandreducesclassdependencies,enhancingcodemodularity,testability,andmaintainability.Itallowspassingdependencieslikedatabaseconnectionstoclassesasparameters,facilitatingeasiertestingandscalability.

CachingimprovesPHPperformancebystoringresultsofcomputationsorqueriesforquickretrieval,reducingserverloadandenhancingresponsetimes.Effectivestrategiesinclude:1)Opcodecaching,whichstorescompiledPHPscriptsinmemorytoskipcompilation;2)DatacachingusingMemc


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function

SublimeText3 English version
Recommended: Win version, supports code prompts!

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool

Dreamweaver Mac version
Visual web development tools

Safe Exam Browser
Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.
