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PHP常用工具类大全,工具类大全
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PHP常用工具类大全,工具类大全

Jun 13, 2016 am 08:50 AM
php

PHP常用工具类大全,工具类大全

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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, $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;

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', '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;

}

 

}

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