PHP常用工具类大全
<?php/** * 助手类 * @author www.shouce.ren * */class Helper{/*** 判断当前服务器系统* @return string*/public static function getOS(){if(PATH_SEPARATOR == ':'){return 'Linux';}else{return 'Windows';}}/*** 当前微妙数* @return number*/public static function microtime_float() {list ( $usec, $sec ) = explode ( " ", microtime () );return (( float ) $usec + ( float ) $sec);}/*** 切割utf-8格式的字符串(一个汉字或者字符占一个字节)** @author zhao jinhan* @version v1.0.0**/public static function truncate_utf8_string($string, $length, $etc = '...') {$result = '';$string = html_entity_decode ( trim ( strip_tags ( $string ) ), ENT_QUOTES, 'UTF-8' );$strlen = strlen ( $string );for($i = 0; (($i < $strlen) && ($length > 0)); $i ++) {if ($number = strpos ( str_pad ( decbin ( ord ( substr ( $string, $i, 1 ) ) ), 8, '0', STR_PAD_LEFT ), '0' )) {if ($length < 1.0) {break;}$result .= substr ( $string, $i, $number );$length -= 1.0;$i += $number - 1;} else {$result .= substr ( $string, $i, 1 );$length -= 0.5;}}$result = htmlspecialchars ( $result, ENT_QUOTES, 'UTF-8' );if ($i < $strlen) {$result .= $etc;}return $result;}/*** 遍历文件夹* @param string $dir* @param boolean $all true表示递归遍历* @return array*/public static function scanfDir($dir='', $all = false, &$ret = array()){if ( false !== ($handle = opendir ( $dir ))) {while ( false !== ($file = readdir ( $handle )) ) {if (!in_array($file, array('.', '..', '.git', '.gitignore', '.svn', '.htaccess', '.buildpath','.project'))) {$cur_path = $dir . '/' . $file;if (is_dir ( $cur_path )) {$ret['dirs'][] =$cur_path;$all && self::scanfDir( $cur_path, $all, $ret);} else {$ret ['files'] [] = $cur_path;}}}closedir ( $handle );}return $ret;}/*** 邮件发送* @param string $toemail* @param string $subject* @param string $message* @return boolean*/public static function sendMail($toemail = '', $subject = '', $message = '') {$mailer = Yii::createComponent ( 'application.extensions.mailer.EMailer' );//邮件配置$mailer->SetLanguage('zh_cn');$mailer->Host = Yii::app()->params['emailHost']; //发送邮件服务器$mailer->Port = Yii::app()->params['emailPort']; //邮件端口$mailer->Timeout = Yii::app()->params['emailTimeout'];//邮件发送超时时间$mailer->ContentType = 'text/html';//设置html格式$mailer->SMTPAuth = true;$mailer->Username = Yii::app()->params['emailUserName'];$mailer->Password = Yii::app()->params['emailPassword'];$mailer->IsSMTP ();$mailer->From = $mailer->Username; // 发件人邮箱$mailer->FromName = Yii::app()->params['emailFormName']; // 发件人姓名$mailer->AddReplyTo ( $mailer->Username );$mailer->CharSet = 'UTF-8';// 添加邮件日志$modelMail = new MailLog ();$modelMail->accept = $toemail;$modelMail->subject = $subject;$modelMail->message = $message;$modelMail->send_status = 'waiting';$modelMail->save ();// 发送邮件$mailer->AddAddress ( $toemail );$mailer->Subject = $subject;$mailer->Body = $message;if ($mailer->Send () === true) {$modelMail->times = $modelMail->times + 1;$modelMail->send_status = 'success';$modelMail->save ();return true;} else {$error = $mailer->ErrorInfo;$modelMail->times = $modelMail->times + 1;$modelMail->send_status = 'failed';$modelMail->error = $error;$modelMail->save ();return false;}}/*** 判断字符串是utf-8 还是gb2312* @param unknown $str* @param string $default* @return string*/public static function utf8_gb2312($str, $default = 'gb2312'){ $str = preg_replace("/[\x01-\x7F]+/", "", $str); if (empty($str)) return $default; $preg = array( "gb2312" => "/^([\xA1-\xF7][\xA0-\xFE])+$/", //正则判断是否是gb2312 "utf-8" => "/^[\x{4E00}-\x{9FA5}]+$/u", //正则判断是否是汉字(utf8编码的条件了),这个范围实际上已经包含了繁体中文字了 ); if ($default == 'gb2312') { $option = 'utf-8'; } else { $option = 'gb2312'; } if (!preg_match($preg[$default], $str)) { return $option; } $str = @iconv($default, $option, $str); //不能转成 $option, 说明原来的不是 $default if (empty($str)) { return $option; } return $default;}/*** utf-8和gb2312自动转化* @param unknown $string* @param string $outEncoding* @return unknown|string*/public static function safeEncoding($string,$outEncoding = 'UTF-8'){$encoding = "UTF-8";for($i = 0; $i < strlen ( $string ); $i ++) {if (ord ( $string {$i} ) < 128)continue;if ((ord ( $string {$i} ) & 224) == 224) {// 第一个字节判断通过$char = $string {++ $i};if ((ord ( $char ) & 128) == 128) {// 第二个字节判断通过$char = $string {++ $i};if ((ord ( $char ) & 128) == 128) {$encoding = "UTF-8";break;}}}if ((ord ( $string {$i} ) & 192) == 192) {// 第一个字节判断通过$char = $string {++ $i};if ((ord ( $char ) & 128) == 128) {// 第二个字节判断通过$encoding = "GB2312";break;}}}if (strtoupper ( $encoding ) == strtoupper ( $outEncoding ))return $string;elsereturn @iconv ( $encoding, $outEncoding, $string );}/*** 返回二维数组中某个键名的所有值* @param input $array* @param string $key* @return array*/public static function array_key_values($array =array(), $key=''){$ret = array();foreach((array)$array as $k=>$v){$ret[$k] = $v[$key];}return $ret;}/*** 判断 文件/目录 是否可写(取代系统自带的 is_writeable 函数)* @param string $file 文件/目录* @return boolean*/public static function is_writeable($file) {if (is_dir($file)){$dir = $file;if ($fp = @fopen("$dir/test.txt", 'w')) {@fclose($fp);@unlink("$dir/test.txt");$writeable = 1;} else {$writeable = 0;}} else {if ($fp = @fopen($file, 'a+')) {@fclose($fp);$writeable = 1;} else {$writeable = 0;}}return $writeable;}/*** 格式化单位*/static public function byteFormat( $size, $dec = 2 ) {$a = array ( "B" , "KB" , "MB" , "GB" , "TB" , "PB" );$pos = 0;while ( $size >= 1024 ) {$size /= 1024;$pos ++;}return round( $size, $dec ) . " " . $a[$pos];}/*** 下拉框,单选按钮 自动选择** @param $string 输入字符* @param $param 条件* @param $type 类型* selected checked* @return string*/static public function selected( $string, $param = 1, $type = 'select' ) {$true = false;if ( is_array( $param ) ) {$true = in_array( $string, $param );}elseif ( $string == $param ) {$true = true;}$return='';if ( $true )$return = $type == 'select' ? 'selected="selected"' : 'checked="checked"';echo $return;}/*** 下载远程图片* @param string $url 图片的绝对url* @param string $filepath 文件的完整路径(例如/www/images/test) ,此函数会自动根据图片url和http头信息确定图片的后缀名* @param string $filename 要保存的文件名(不含扩展名)* @return mixed 下载成功返回一个描述图片信息的数组,下载失败则返回false*/static public function downloadImage($url, $filepath, $filename) {//服务器返回的头信息$responseHeaders = array();//原始图片名$originalfilename = '';//图片的后缀名$ext = '';$ch = curl_init($url);//设置curl_exec返回的值包含Http头curl_setopt($ch, CURLOPT_HEADER, 1);//设置curl_exec返回的值包含Http内容curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);//设置抓取跳转(http 301,302)后的页面curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);//设置最多的HTTP重定向的数量curl_setopt($ch, CURLOPT_MAXREDIRS, 3);//服务器返回的数据(包括http头信息和内容)$html = curl_exec($ch);//获取此次抓取的相关信息$httpinfo = curl_getinfo($ch);curl_close($ch);if ($html !== false) {//分离response的header和body,由于服务器可能使用了302跳转,所以此处需要将字符串分离为 2+跳转次数 个子串$httpArr = explode("\r\n\r\n", $html, 2 + $httpinfo['redirect_count']);//倒数第二段是服务器最后一次response的http头$header = $httpArr[count($httpArr) - 2];//倒数第一段是服务器最后一次response的内容$body = $httpArr[count($httpArr) - 1];$header.="\r\n";//获取最后一次response的header信息preg_match_all('/([a-z0-9-_]+):\s*([^\r\n]+)\r\n/i', $header, $matches);if (!empty($matches) && count($matches) == 3 && !empty($matches[1]) && !empty($matches[1])) {for ($i = 0; $i < count($matches[1]); $i++) {if (array_key_exists($i, $matches[2])) {$responseHeaders[$matches[1][$i]] = $matches[2][$i];}}}//获取图片后缀名if (0 < preg_match('{(?:[^\/\\\\]+)\.(jpg|jpeg|gif|png|bmp)$}i', $url, $matches)) {$originalfilename = $matches[0];$ext = $matches[1];} else {if (array_key_exists('Content-Type', $responseHeaders)) {if (0 < preg_match('{image/(\w+)}i', $responseHeaders['Content-Type'], $extmatches)) {$ext = $extmatches[1];}}}//保存文件if (!empty($ext)) {//如果目录不存在,则先要创建目录if(!is_dir($filepath)){mkdir($filepath, 0777, true);}$filepath .= '/'.$filename.".$ext";$local_file = fopen($filepath, 'w');if (false !== $local_file) {if (false !== fwrite($local_file, $body)) {fclose($local_file);$sizeinfo = getimagesize($filepath);return array('filepath' => realpath($filepath), 'width' => $sizeinfo[0], 'height' => $sizeinfo[1], 'orginalfilename' => $originalfilename, 'filename' => pathinfo($filepath, PATHINFO_BASENAME));}}}}return false;}/*** 查找ip是否在某个段位里面* @param string $ip 要查询的ip* @param $arrIP 禁止的ip* @return boolean*/public static function ipAccess($ip='0.0.0.0', $arrIP = array()){$access = true;$ip && $arr_cur_ip = explode('.', $ip);foreach((array)$arrIP as $key=> $value){if($value == '*.*.*.*'){$access = false; //禁止所有break;}$tmp_arr = explode('.', $value);if(($arr_cur_ip[0] == $tmp_arr[0]) && ($arr_cur_ip[1] == $tmp_arr[1])) {//前两段相同if(($arr_cur_ip[2] == $tmp_arr[2]) || ($tmp_arr[2] == '*')){//第三段为* 或者相同if(($arr_cur_ip[3] == $tmp_arr[3]) || ($tmp_arr[3] == '*')){//第四段为* 或者相同$access = false; //在禁止ip列,则禁止访问break;}}}}return $access;}/*** @param string $string 原文或者密文* @param string $operation 操作(ENCODE | DECODE), 默认为 DECODE* @param string $key 密钥* @param int $expiry 密文有效期, 加密时候有效, 单位 秒,0 为永久有效* @return string 处理后的 原文或者 经过 base64_encode 处理后的密文** @example** $a = authcode('abc', 'ENCODE', 'key');* $b = authcode($a, 'DECODE', 'key'); // $b(abc)** $a = authcode('abc', 'ENCODE', 'key', 3600);* $b = authcode('abc', 'DECODE', 'key'); // 在一个小时内,$b(abc),否则 $b 为空*/public static function authcode($string, $operation = 'DECODE', $key = '', $expiry = 3600) {$ckey_length = 4;// 随机密钥长度 取值 0-32;// 加入随机密钥,可以令密文无任何规律,即便是原文和密钥完全相同,加密结果也会每次不同,增大破解难度。// 取值越大,密文变动规律越大,密文变化 = 16 的 $ckey_length 次方// 当此值为 0 时,则不产生随机密钥$key = md5 ( $key ? $key : 'key' ); //这里可以填写默认key值$keya = md5 ( substr ( $key, 0, 16 ) );$keyb = md5 ( substr ( $key, 16, 16 ) );$keyc = $ckey_length ? ($operation == 'DECODE' ? substr ( $string, 0, $ckey_length ) : substr ( md5 ( microtime () ), - $ckey_length )) : '';$cryptkey = $keya . md5 ( $keya . $keyc );$key_length = strlen ( $cryptkey );$string = $operation == 'DECODE' ? base64_decode ( substr ( $string, $ckey_length ) ) : sprintf ( '%010d', $expiry ? $expiry + time () : 0 ) . substr ( md5 ( $string . $keyb ), 0, 16 ) . $string;$string_length = strlen ( $string );$result = '';$box = range ( 0, 255 );$rndkey = array ();for($i = 0; $i <= 255; $i ++) {$rndkey [$i] = ord ( $cryptkey [$i % $key_length] );}for($j = $i = 0; $i < 256; $i ++) {$j = ($j + $box [$i] + $rndkey [$i]) % 256;$tmp = $box [$i];$box [$i] = $box [$j];$box [$j] = $tmp;}for($a = $j = $i = 0; $i < $string_length; $i ++) {$a = ($a + 1) % 256;$j = ($j + $box [$a]) % 256;$tmp = $box [$a];$box [$a] = $box [$j];$box [$j] = $tmp;$result .= chr ( ord ( $string [$i] ) ^ ($box [($box [$a] + $box [$j]) % 256]) );}if ($operation == 'DECODE') {if ((substr ( $result, 0, 10 ) == 0 || substr ( $result, 0, 10 ) - time () > 0) && substr ( $result, 10, 16 ) == substr ( md5 ( substr ( $result, 26 ) . $keyb ), 0, 16 )) {return substr ( $result, 26 );} else {return '';}} else {return $keyc . str_replace ( '=', '', base64_encode ( $result ) );}}public static function gbkToUtf8($str){return iconv("GBK", "UTF-8", $str);}/*** 取得输入目录所包含的所有目录和文件* 以关联数组形式返回* author: flynetcn*/static public function deepScanDir($dir){$fileArr = array();$dirArr = array();$dir = rtrim($dir, '//');if(is_dir($dir)){$dirHandle = opendir($dir);while(false !== ($fileName = readdir($dirHandle))){$subFile = $dir . DIRECTORY_SEPARATOR . $fileName;if(is_file($subFile)){$fileArr[] = $subFile;} elseif (is_dir($subFile) && str_replace('.', '', $fileName)!=''){$dirArr[] = $subFile;$arr = self::deepScanDir($subFile);$dirArr = array_merge($dirArr, $arr['dir']);$fileArr = array_merge($fileArr, $arr['file']);}}closedir($dirHandle);}return array('dir'=>$dirArr, 'file'=>$fileArr);}/*** 取得输入目录所包含的所有文件* 以数组形式返回* author: flynetcn*/static public function get_dir_files($dir){if (is_file($dir)) {return array($dir);}$files = array();if (is_dir($dir) && ($dir_p = opendir($dir))) {$ds = DIRECTORY_SEPARATOR;while (($filename = readdir($dir_p)) !== false) {if ($filename=='.' || $filename=='..') { continue; }$filetype = filetype($dir.$ds.$filename);if ($filetype == 'dir') {$files = array_merge($files, self::get_dir_files($dir.$ds.$filename));} elseif ($filetype == 'file') {$files[] = $dir.$ds.$filename;}}closedir($dir_p);}return $files;}}
太多1000多行呢了保存不了,查看完整并下载
下载地址:http://www.shouce.ren/post/d/id/1700

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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