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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 ( $string,$number );
$length -= 1.0;
$i += $number - 1;
} else {
$result .= substr ( $string,1 );
$length -= 0.5;
}
}
$result = htmlspecialchars ( $result,'UTF-8' );
if ($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;
else
return @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','key',3600);
* $b = authcode('abc','key'); // 在一个小时内,$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,16 ) );
$keyb = md5 ( substr ( $key,16,16 ) );
$keyc = $ckey_length ? ($operation == 'DECODE' ? substr ( $string,$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 ),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,10 ) == 0 || substr ( $result,10 ) - time () > 0) && substr ( $result,10,16 ) == substr ( md5 ( substr ( $result,26 ) . $keyb ),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
以上内容就是本文的全部叙述,喜欢的朋友可以直接下载源码哦。
原文链接:https://www.f2er.com/php/20848.html