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# 我觉得有点用的公共函数(I think it's a little bit useful) --- ## 格式化文件大小 ``` /** * [format_size 格式化文件大小] * @param [int] $size [文件大小] * @return [float/double] [格式化后的文件大小] */ function format_size($size) { $arr = ['B', 'KB', 'M', 'G', 'T', 'P']; $i = 0; while ($size >= 1024) { $size = $size / 1024; $i++; } // 四舍五入进行返回 return round($size, 4).$arr[$i]; } ``` ## 可逆加密算法 encrypt ``` /** * [encrypt 可逆加密算法] * @param [type] $data [description] * @param [type] $key [description] * @return [type] [description] */ function encrypt($data, $key) { $key = md5($key); $x = 0; $len = strlen($data); $l = strlen($data); $char = ''; $str = ''; for ($i=0; $i < $len; $i++) { if ($x == $l) { $x = 0; } $char .= $key{$x}; $x++; } for ($i = 0; $i < $len; $i++) { $str .= chr(ord($data{$i}) + (ord($char{$i})) % 256); } return base64_encode($str); } ``` ## 解密算法 decrypt ``` /** * [decrypt 解密算法] * @param [type] $data [description] * @param [type] $key [description] * @return [type] [description] */ function decrypt($data, $key) { $key = md5($key); $x = 0; $data = base64_decode($data); $len = strlen($data); $l = strlen($key); $char = ""; $str = ""; for ($i = 0; $i < $len; $i++) { if ($x == $l) { $x = 0; } $char .= substr($key, $x, 1); $x++; } for ($i = 0; $i < $len; $i++) { if (ord(substr($data, $i, 1)) < ord(substr($char, $i, 1))) { $str .= chr((ord(substr($data, $i, 1)) + 256) - ord(substr($char, $i, 1))); } else { $str .= chr(ord(substr($data, $i, 1)) - ord(substr($char, $i, 1))); } } return $str; } ``` ## 导出Excel ``` // 导出excle function export_to($data,$name=false,$type = 0){ if(!$name){$name=date("Y-m-d-H-i-s",time());} $PHPExcel = new PHPExcel(); //实例化PHPExcel类,类似于在桌面上新建一个Excel表格 $PHPExcel->getActiveSheet()->fromArray($data); $PHPExcel->getActiveSheet()->setTitle('Sheet1'); //给当前活动sheet设置名称 $PHPExcel->setActiveSheetIndex(0); $fileName = './public/'.date('Y-m-d_', time()).time().'.xlsx'; $saveName = $name.date('Y-m-d', time()).'.xlsx'; $PHPWriter = PHPExcel_IOFactory::createWriter($PHPExcel,'Excel5');//按照指定格式生成Excel文件,‘Excel2007’表示生成2007版本的xlsx,‘Excel5’表示生成2003版本Excel文件 if ($type == 0) { header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');//告诉浏览器输出07Excel文件 header('Content-Type:application/vnd.ms-excel');//告诉浏览器将要输出Excel03版本文件 header('Content-Disposition: attachment;filename="'.$saveName.'"');//告诉浏览器输出浏览器名称 // header('Content-Disposition: attachment;filename="01simple.xlsx"');//告诉浏览器输出浏览器名称 header('Cache-Control: max-age=0');//禁止缓存 $PHPWriter->save("php://output"); }else{ $PHPWriter->save($fileName); //表示在$path路径下面生成demo.xlsx文件 } } ``` ## 无限极分类树 ``` function list_to_tree($list, $pk = 'id', $pid = 'pid', $child = '_child', $keys = 'id', $sort = 'asc', $root = 0) { // 创建Tree $tree = array(); if (is_array($list)) { // 创建基于主键的数组引用 $refer = array(); foreach ($list as $key => $data) { $list[$key][$child] = []; $refer [$data[$pk]] = &$list[$key]; } foreach ($list as $key => $data) { // 判断是否存在parent $parentId = $data[$pid]; if ($root == $parentId) { $tree [] = &$list[$key]; $tree = my_sort($tree,$keys,$sort,SORT_NUMERIC); } else { if (isset ($refer [$parentId])) { $parent = &$refer[$parentId]; $parent[$child] [] = &$list[$key]; $parent[$child] = my_sort($parent[$child],$keys,$sort,SORT_NUMERIC); } } } } return $tree; } ``` ## 系统邮件发送函数 ``` /** * 系统邮件发送函数 * @param string $tomail 接收邮件者邮箱 * @param string $name 接收邮件者名称 * @param string $subject 邮件主题 * @param string $body 邮件内容 * @param string $attachment 附件列表 * @return boolean * @author static7 <static7@qq.com> 使用方法: $toemail='111111@qq.com'; $name = 'dqwdqqwdq';//收件人昵称 $subject='注册验证码'; $mail_tpl = model('MailTpl')->where('type', 'register')->find()->toArray(); $content = str_replace("\$code","123456",$mail_tpl['content']); $result = send_mail($toemail,$name,$subject,$content); dump($result); */ function send_mail($tomail, $name, $subject = '', $body = '', $attachment = null) { $config_mail = model('Mail')->find()->toArray(); $shop = model('Config')->find(); $mail = new \PHPMailer(); //实例化PHPMailer对象 $mail->CharSet = 'UTF-8'; //设定邮件编码,默认ISO-8859-1,如果发中文此项必须设置,否则乱码 $mail->IsSMTP(); // 设定使用SMTP服务 $mail->SMTPDebug = 0; // SMTP调试功能 0=关闭 1 = 错误和消息 2 = 消息 $mail->SMTPAuth = true; // 启用 SMTP 验证功能 if($config_mail['secure']){ $mail->SMTPSecure = 'ssl'; // 使用安全协议Enable TLS encryption, `ssl` also accepted }else{ $mail->SMTPSecure = 'tls'; // 使用安全协议Enable TLS encryption, `ssl` also accepted } $mail->Host = $config_mail['host']; // SMTP 服务器 $mail->Port = $config_mail['port']; // SMTP服务器的端口号 $mail->Username = $config_mail['user']; // SMTP服务器用户名 $mail->Password = $config_mail['pass']; // SMTP服务器密码 $mail->SetFrom($config_mail['user'], $shop['title']); $replyEmail = $config_mail['replyTo']; //留空则为发件人EMAIL $replyName = '发送回复'; //回复名称(留空则为发件人名称) $mail->AddReplyTo($replyEmail, $replyName); $mail->Subject = $subject; $mail->MsgHTML($body); $mail->AddAddress($tomail, $name); if (is_array($attachment)) { // 添加附件 foreach ($attachment as $file) { is_file($file) && $mail->AddAttachment($file); } } return $mail->Send() ? true : $mail->ErrorInfo; } ``` ## 获取当前url地址 ``` /** * [getActionUrl description]获取当前url * @return [type] [description] */ function getActionUrl(){ $module = strtolower(request()->module()); $controller = strtolower(request()->controller()); $action = strtolower(request()->action()); return $module.'/'.$controller.'/'.$action; } ``` ## 截取多少长度的字符串并以省略号代替超过的部分 ```php if (!function_exists('strCut')) { function strCut($str, $length)//$str为要进行截取bai的字符串,$length为截取长度(du汉字算一个字,字母算半个字)zhi { $str = trim($str); $string = ""; if (strlen($str) > $length) { for ($i = 0; $i < $length; $i++) { if (ord($str) > 127) { $string .= $str[$i] . $str[$i + 1] . $str[$i + 2]; $i = $i + 2; } else { $string .= $str[$i]; } } $string .= "..."; return $string; } return $str; } } ``` ## Api请求curl方式 ```php if (!function_exists('api')) { /** * @param string $url * @param string $params * @param string $method * @param array $header * @throws \Exception * @return */ function api(string $url, string $params = '', string $method = 'GET', array $header = array()) { $opts = array( CURLOPT_TIMEOUT => 30, CURLOPT_RETURNTRANSFER => TRUE, CURLOPT_SSL_VERIFYHOST => FALSE, CURLOPT_SSL_VERIFYPEER => FALSE, CURLOPT_HTTPHEADER => $header, CURLOPT_HEADER => FALSE ); switch(strtoupper($method)){ case 'GET': $opts[CURLOPT_URL] = $url.'?'; if (!empty($params)) { $opts[CURLOPT_URL] = $url . '?' . http_build_query($params); } break; case 'POST': $opts[CURLOPT_URL] = $url; $opts[CURLOPT_POST] = TRUE; $opts[CURLOPT_POSTFIELDS] = $params; break; } $ch = curl_init(); curl_setopt_array($ch, $opts); $result = curl_exec($ch); $error = curl_error($ch); curl_close($ch); if($error){ throw new Exception('curl执行出错'); } return $result; } } ``` ## HTTP curl请求API方法 ```php if (!function_exists('httpRequest')) { function httpRequest($url, $method, $postfields = null, $headers = [], $debug = false) { $method = strtoupper($method); $ci = curl_init(); /* Curl settings */ curl_setopt($ci, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0); curl_setopt($ci, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows NT 6.2; WOW64; rv:34.0) Gecko/20100101 Firefox/34.0"); curl_setopt($ci, CURLOPT_CONNECTTIMEOUT, 60); /* 在发起连接前等待的时间,如果设置为0,则无限等待 */ curl_setopt($ci, CURLOPT_TIMEOUT, 7); /* 设置cURL允许执行的最长秒数 */ curl_setopt($ci, CURLOPT_RETURNTRANSFER, true); switch ($method) { case "POST": curl_setopt($ci, CURLOPT_POST, true); if (!empty($postfields)) { $tmpdatastr = is_array($postfields) ? http_build_query($postfields) : $postfields; curl_setopt($ci, CURLOPT_POSTFIELDS, $tmpdatastr); } break; default: curl_setopt($ci, CURLOPT_CUSTOMREQUEST, $method); /* //设置请求方式 */ break; } $ssl = preg_match('/^https:\/\//i', $url) ? true : false; curl_setopt($ci, CURLOPT_URL, $url); if ($ssl) { curl_setopt($ci, CURLOPT_SSL_VERIFYPEER, false); // https请求 不验证证书和hosts curl_setopt($ci, CURLOPT_SSL_VERIFYHOST, false); // 不从证书中检查SSL加密算法是否存在 } //curl_setopt($ci, CURLOPT_HEADER, true); /*启用时会将头文件的信息作为数据流输出*/ curl_setopt($ci, CURLOPT_FOLLOWLOCATION, 1); curl_setopt($ci, CURLOPT_MAXREDIRS, 2);/*指定最多的HTTP重定向的数量,这个选项是和CURLOPT_FOLLOWLOCATION一起使用的*/ curl_setopt($ci, CURLOPT_HTTPHEADER, $headers); curl_setopt($ci, CURLINFO_HEADER_OUT, true); /*curl_setopt($ci, CURLOPT_COOKIE, $Cookiestr); * *COOKIE带过去** */ $response = curl_exec($ci); $requestinfo = curl_getinfo($ci); $http_code = curl_getinfo($ci, CURLINFO_HTTP_CODE); if ($debug) { echo "=====post data======\r\n"; var_dump($postfields); echo "=====info===== \r\n"; print_r($requestinfo); echo "=====response=====\r\n"; print_r($response); } curl_close($ci); return $response; } } ``` ## 获取当前日期是星期几 ```php if (!function_exists('getTimeWeek')) { /** * 获取当前时间是星期几 * @param $time [当前时间戳] * @param int $i [第几天之后 默认为0为今天] * @return mixed */ function getTimeWeek($time, $i = 0) { $weekArray = [7, 1, 2, 3, 4, 5, 6]; $oneDay = 24 * 60 * 60; return $weekArray[date('w', $time + $oneDay * $i)]; } } ```