PHP常用工具類大全，工具類大全

<?php
/**
 * 助手類
 * @author www.shouce.ren
 *
 */
class Helper
{
/**
* 判斷當(dāng)前服務(wù)器系統(tǒng)
* @return string
*/
public static function getOS(){
if(PATH_SEPARATOR == ':'){
return 'Linux';
}else{
return 'Windows';
}
}
/**
* 當(dāng)前微妙數(shù)
* @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(一個(gè)漢字或者字符占一個(gè)字節(jié))
*
* @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;
}

/**
* 遍歷文件夾
* @param string $dir
* @param boolean $all  true表示遞歸遍歷
* @return array
*/
public static function scanfDir($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;
}

/**
* 郵件發(fā)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' );

//郵件配置
$mailer->SetLanguage('zh_cn');
$mailer->Host = Yii::app()->params['emailHost']; //發(fā)送郵件服務(wù)器
$mailer->Port = Yii::app()->params['emailPort']; //郵件端口
$mailer->Timeout = Yii::app()->params['emailTimeout'];//郵件發(fā)送超時(shí)時(shí)間
$mailer->ContentType = 'text/html';//設(shè)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; // 發(fā)件人郵箱
$mailer->FromName = Yii::app()->params['emailFormName']; // 發(fā)件人姓名
$mailer->AddReplyTo ( $mailer->Username );
$mailer->CharSet = 'UTF-8';

// 添加郵件日志
$modelMail = new MailLog ();
$modelMail->accept = $toemail;
$modelMail->subject = $subject;
$modelMail->message = $message;
$modelMail->send_status = 'waiting';
$modelMail->save ();
// 發(fā)送郵件
$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;
}
}

/**
* 判斷字符串是utf-8 還是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;

   $preg =  array(
       "gb2312" => "/^([\xA1-\xF7][\xA0-\xFE])+$/", //正則判斷是否是gb2312
       "utf-8" => "/^[\x{4E00}-\x{9FA5}]+$/u",      //正則判斷是否是漢字(utf8編碼的條件了)，這個(gè)范圍實(shí)際上已經(jīng)包含了繁體中文字了
   );

   if ($default == 'gb2312') {
       $option = 'utf-8';
   } else {
       $option = 'gb2312';
   }

   if (!preg_match($preg[$default], $str)) {
       return $option;
   }
   $str = @iconv($default, $option, $str);

   //不能轉(zhuǎn)成 $option, 說(shuō)明原來(lái)的不是 $default
   if (empty($str)) {
       return $option;
   }
   return $default;
}
/**
* utf-8和gb2312自動(dòng)轉(zhuǎn)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) {
// 第一個(gè)字節(jié)判斷通過(guò)
$char = $string {++ $i};
if ((ord ( $char ) & 128) == 128) {
// 第二個(gè)字節(jié)判斷通過(guò)
$char = $string {++ $i};
if ((ord ( $char ) & 128) == 128) {
$encoding = "UTF-8";
break;
}
}
}
if ((ord ( $string {$i} ) & 192) == 192) {
// 第一個(gè)字節(jié)判斷通過(guò)
$char = $string {++ $i};
if ((ord ( $char ) & 128) == 128) {
// 第二個(gè)字節(jié)判斷通過(guò)
$encoding = "GB2312";
break;
}
}
}

if (strtoupper ( $encoding ) == strtoupper ( $outEncoding ))
return $string;
else
return @iconv ( $encoding, $outEncoding, $string );
}
/**
* 返回二維數(shù)組中某個(gè)鍵名的所有值
* @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;
}


/**
* 判斷 文件/目錄 是否可寫（取代系統(tǒng)自帶的 is_writeable 函數(shù)）
* @param string $file 文件/目錄
* @return boolean
*/
public static function is_writeable($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;
}
/**
* 格式化單位
*/
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，單選按鈕 自動(dòng)選擇
*
* @param $string 輸入字符
* @param $param  條件
* @param $type   類型
* 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;
}

/**
* 下載遠(yuǎn)程圖片
* @param string $url 圖片的絕對(duì)url
* @param string $filepath 文件的完整路徑（例如/www/images/test） ，此函數(shù)會(huì)自動(dòng)根據(jù)圖片url和http頭信息確定圖片的后綴名
* @param string $filename 要保存的文件名(不含擴(kuò)展名)
* @return mixed 下載成功返回一個(gè)描述圖片信息的數(shù)組，下載失敗則返回false
*/
static public function downloadImage($url, $filepath, $filename) {
//服務(wù)器返回的頭信息
$responseHeaders = array();
//原始圖片名
$originalfilename = '';
//圖片的后綴名
$ext = '';
$ch = curl_init($url);
//設(shè)置curl_exec返回的值包含Http頭
curl_setopt($ch, CURLOPT_HEADER, 1);
//設(shè)置curl_exec返回的值包含Http內(nèi)容
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
//設(shè)置抓取跳轉(zhuǎn)（http 301，302）后的頁(yè)面
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
//設(shè)置最多的HTTP重定向的數(shù)量
curl_setopt($ch, CURLOPT_MAXREDIRS, 3);

//服務(wù)器返回的數(shù)據(jù)（包括http頭信息和內(nèi)容）
$html = curl_exec($ch);
//獲取此次抓取的相關(guān)信息
$httpinfo = curl_getinfo($ch);
curl_close($ch);
if ($html !== false) {
//分離response的header和body，由于服務(wù)器可能使用了302跳轉(zhuǎn)，所以此處需要將字符串分離為 2+跳轉(zhuǎn)次數(shù) 個(gè)子串
$httpArr = explode("\r\n\r\n", $html, 2 + $httpinfo['redirect_count']);
//倒數(shù)第二段是服務(wù)器最后一次response的http頭
$header = $httpArr[count($httpArr) - 2];
//倒數(shù)第一段是服務(wù)器最后一次response的內(nèi)容
$body = $httpArr[count($httpArr) - 1];
$header.="\r\n";

//獲取最后一次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];
}
}
}
//獲取圖片后綴名
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)) {
//如果目錄不存在，則先要?jiǎng)?chuàng)建目錄
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是否在某個(gè)段位里面
* @param string $ip 要查詢的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] == $tmp_arr[1])) {
//前兩段相同
if(($arr_cur_ip[2] == $tmp_arr[2]) || ($tmp_arr[2] == '*')){
//第三段為* 或者相同
if(($arr_cur_ip[3] == $tmp_arr[3]) || ($tmp_arr[3] == '*')){
//第四段為* 或者相同
$access = false; //在禁止ip列，則禁止訪問
break;
}
}
}
}
return $access;
}

/**
* @param string $string 原文或者密文
* @param string $operation 操作(ENCODE | DECODE), 默認(rèn)為 DECODE
* @param string $key 密鑰
* @param int $expiry 密文有效期, 加密時(shí)候有效， 單位 秒，0 為永久有效
* @return string 處理后的 原文或者 經(jīng)過(guò) base64_encode 處理后的密文
*
* @example
*
* $a = authcode('abc', 'ENCODE', 'key');
* $b = authcode($a, 'DECODE', 'key');  // $b(abc)
*
* $a = authcode('abc', 'ENCODE', 'key', 3600);
* $b = authcode('abc', 'DECODE', 'key'); // 在一個(gè)小時(shí)內(nèi)，$b(abc)，否則 $b 為空
*/
public static function authcode($string, $operation = 'DECODE', $key = '', $expiry = 3600) {

$ckey_length = 4;
// 隨機(jī)密鑰長(zhǎng)度 取值 0-32;
// 加入隨機(jī)密鑰，可以令密文無(wú)任何規(guī)律，即便是原文和密鑰完全相同，加密結(jié)果也會(huì)每次不同，增大破解難度。
// 取值越大，密文變動(dòng)規(guī)律越大，密文變化 = 16 的 $ckey_length 次方
// 當(dāng)此值為 0 時(shí)，則不產(chǎn)生隨機(jī)密鑰


$key = md5 ( $key ? $key : 'key' ); //這里可以填寫默認(rèn)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);
}

/**
* 取得輸入目錄所包含的所有目錄和文件
* 以關(guān)聯(lián)數(shù)組形式返回
* 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);
}


/**
* 取得輸入目錄所包含的所有文件
* 以數(shù)組形式返回
* 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，查看完整并下載　

　下載地址：http://www.shouce.ren/post/d/id/1700