class PHPMcrypt{ /* 操作句柄 */ private $crypt = null; /* 生成的密钥 */ private $key = null; /* 初始向量 */ private $iv = null; /* 支持的最长密钥 */ private $ks = null; /* 数据类型是否可以接受 */ private $accept = false; // false 不可以接受 true 可以接受 /* 是否需要序列化 */ private $serialize = false; //false 不需要序列化 true 需要序列化 public function __construct($secretKey='!@#$%^'){ /* 打开加密算法和模式 */ $this->crypt = mcrypt_module_open('tripledes','','nofb',''); /* 创建初始向量,并且检测密钥长度。 */ $this->iv = mcrypt_create_iv(mcrypt_enc_get_iv_size($this->crypt), MCRYPT_RAND); /* 获取支持的最长密钥 */ $this->ks = mcrypt_enc_get_key_size($this->crypt); /* 生成密钥 */ $this->key = substr(md5($secretKey),0,$this->ks); } /** *数据类型是否可以接受和序列化 *$data int|string 要加密的数据 *return boolean */ private function acceptAndSerialize($data){ $type = gettype($data); switch($type){ case 'string': case 'integer': case 'float': case 'double ': $this->accept = true; $this->serialize = false; break; case 'array': case 'object': $this->accept = true; $this->serialize = true; break; default: $this->accept = false; $this->serialize = false; } } /** *加密数据 *$data mixed 要加密的数据 *return string|boolean */ public function encrypt($data){ $this->acceptAndSerialize($data); if( empty($data) || ($this->accept == false) ){ return false; } //序列化 if( $this->serialize ){ $data = serialize($data); } /* 初始化加密 */ mcrypt_generic_init($this->crypt,$this->key,$this->iv); /* 加密数据 */ $encrypt = mcrypt_generic($this->crypt,$data); /* 字符串以 MIME BASE64 编码。此编码方式可以让中文字或者图片也能在网络上顺利传输 */ $encrypt = base64_encode($encrypt); if( $this->serialize ){ $encrypt .='|'.$this->serialize; } /* 结束加密,执行清理工作 */ mcrypt_generic_deinit($this->crypt); return $encrypt; } /** *解密数据 *$data string 要解密的数据 *return mixed */ public function decrypt($data){ if( empty($data) ){ return false; } /* 判断是否序列化 */ if( strpos($data,'|') ){ $tempData = explode('|',$data); $data = $tempData[0]; $this->serialize = $tempData[1]; } /* 初始化解密 */ mcrypt_generic_init($this->crypt,$this->key,$this->iv); /* 解密数据 */ $data = base64_decode($data); $decrypt = mdecrypt_generic($this->crypt,$data); /* 解序列化 */ if( $this->serialize){ $decrypt = unserialize($decrypt); } /* 结束加密,执行清理工作 */ mcrypt_generic_deinit($this->crypt); return $decrypt; } public function __destruct(){ /* 关闭加密模块 */ mcrypt_module_close($this->crypt); } } //int|float|字符串 <pre name="code" class="html">$oPHPMcrypt = new PHPMcrypt(123); $encrypt = '中国*上海-021'; $encrypt = $oPHPMcrypt->encrypt($encrypt); echo $encrypt; echo '<br>'; $decrypt = $oPHPMcrypt->decrypt($encrypt); echo $decrypt; //数组|对象 $oPHPMcrypt = new PHPMcrypt(123); $encrypt = array('name'=>'张三','age'=>100); $encrypt = $oPHPMcrypt->encrypt($encrypt); echo $encrypt; echo '<br>'; $decrypt = $oPHPMcrypt->decrypt($encrypt); print_r($decrypt);
The above introduces the PHP encrypted data operation class, including aspects of the content. I hope it will be helpful to friends who are interested in PHP tutorials.

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.


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