自己項目中PHP常用工具類大全分享

Php代碼 <?php /** * 助手類 * @author www.shouce.ren * */ class Helper { /** * 判斷當前伺服器系統 * @return string */ public static function getOS(){ if(PATH_SEPARAT ...

Php代碼

<?php
/**
* 助手類
* @author www.shouce.ren
*
*/
class Helper
{
/**
* 判斷當前伺服器系統
* @return string
*/
public static function getOS(){
if(PATH_SEPARATOR == ':'){
return 'Linux';
}else{
return 'Windows';
}
}
/**
* 當前微妙數
* @return number
*/
public static function microtime_float() {
list ( $usec, $sec ) = explode ( " ", microtime () );
return (( float ) $usec + ( float ) $sec);
}
/**
* 切割utf-8格式的字元串(一個漢字或者字元占一個位元組)
*
* @author zhao jinhan
* @version v1.0.0
*
*/
public static function truncate_utf8_string($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']; //發送郵件伺服器
$mailer->Port = Yii::app()->params['emailPort']; //郵件埠
$mailer->Timeout = Yii::app()->params['emailTimeout'];//郵件發送超時時間
$mailer->ContentType = 'text/html';//設置html格式
$mailer->SMTPAuth = true;
$mailer->Username = Yii::app()->params['emailUserName'];
$mailer->Password = Yii::app()->params['emailPassword'];
$mailer->IsSMTP ();
$mailer->From = $mailer->Username; // 發件人郵箱
$mailer->FromName = Yii::app()->params['emailFormName']; // 發件人姓名
$mailer->AddReplyTo ( $mailer->Username );
$mailer->CharSet = 'UTF-8';
// 添加郵件日誌
$modelMail = new MailLog ();
$modelMail->accept = $toemail;
$modelMail->subject = $subject;
$modelMail->message = $message;
$modelMail->send_status = 'waiting';
$modelMail->save ();
// 發送郵件
$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;
}
}
/**
* 判斷字元串是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]+/", "", $str);
if (emptyempty($str)) return $default;
$preg = array(
"gb2312" => "/^([\xA1-\xF7][\xA0-\xFE])+$/", //正則判斷是否是gb2312
"utf-8" => "/^[\x{4E00}-\x{9FA5}]+$/u", //正則判斷是否是漢字(utf8編碼的條件了)，這個範圍實際上已經包含了繁體中文字了
);
if ($default == 'gb2312') {
$option = 'utf-8';
} else {
$option = 'gb2312';
}
if (!preg_match($preg[$default], $str)) {
return $option;
}
$str = @iconv($default, $option, $str);
//不能轉成 $option, 說明原來的不是 $default
if (emptyempty($str)) {
return $option;
}
return $default;
}
/**
* utf-8和gb2312自動轉化
* @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) {
// 第一個位元組判斷通過
$char = $string {++ $i};
if ((ord ( $char ) & 128) == 128) {
// 第二個位元組判斷通過
$char = $string {++ $i};
if ((ord ( $char ) & 128) == 128) {
$encoding = "UTF-8";
break;
}
}
}
if ((ord ( $string {$i} ) & 192) == 192) {
// 第一個位元組判斷通過
$char = $string {++ $i};
if ((ord ( $char ) & 128) == 128) {
// 第二個位元組判斷通過
$encoding = "GB2312";
break;
}
}
}
if (strtoupper ( $encoding ) == strtoupper ( $outEncoding ))
return $string;
else
return @iconv ( $encoding, $outEncoding, $string );
}
/**
* 返回二維數組中某個鍵名的所有值
* @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（取代系統自帶的 is_writeable 函數）
* @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，單選按鈕自動選擇
*
* @param $string 輸入字元
* @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;
}
/**
* 下載遠程圖片
* @param string $url 圖片的絕對url
* @param string $filepath 文件的完整路徑（例如/www/images/test），此函數會自動根據圖片url和http頭信息確定圖片的尾碼名
* @param string $filename 要保存的文件名(不含擴展名)
* @return mixed 下載成功返回一個描述圖片信息的數組，下載失敗則返回false
*/
static public function downloadImage($url, $filepath, $filename) {
//伺服器返回的頭信息
$responseHeaders = array();
//原始圖片名
$originalfilename = '';
//圖片的尾碼名
$ext = '';
$ch = curl_init($url);
//設置curl_exec返回的值包含Http頭
curl_setopt($ch, CURLOPT_HEADER, 1);
//設置curl_exec返回的值包含Http內容
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
//設置抓取跳轉（http 301，302）後的頁面
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
//設置最多的HTTP重定向的數量
curl_setopt($ch, CURLOPT_MAXREDIRS, 3);
//伺服器返回的數據（包括http頭信息和內容）
$html = curl_exec($ch);
//獲取此次抓取的相關信息
$httpinfo = curl_getinfo($ch);
curl_close($ch);
if ($html !== false) {
//分離response的header和body，由於伺服器可能使用了302跳轉，所以此處需要將字元串分離為 2+跳轉次數個子串
$httpArr = explode("\r\n\r\n", $html, 2 + $httpinfo['redirect_count']);
//倒數第二段是伺服器最後一次response的http頭
$header = $httpArr[count($httpArr) - 2];
//倒數第一段是伺服器最後一次response的內容
$body = $httpArr[count($httpArr) - 1];
$header.="\r\n";
//獲取最後一次response的header信息
preg_match_all('/([a-z0-9-_]+):\s*([^\r\n]+)\r\n/i', $header, $matches);
if (!emptyempty($matches) && count($matches) == 3 && !emptyempty($matches[1]) && !emptyempty($matches[1])) {
for ($i = 0; $i < count($matches[1]); $i++) {
if (array_key_exists($i, $matches[2])) {
$responseHeaders[$matches[1][$i]] = $matches[2][$i];
}
}
}
//獲取圖片尾碼名
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 = $extmatches[1];
}
}
}
//保存文件
if (!emptyempty($ext)) {
//如果目錄不存在，則先要創建目錄
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是否在某個段位裡面
* @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), 預設為 DECODE
* @param string $key 密鑰
* @param int $expiry 密文有效期, 加密時候有效，單位秒，0 為永久有效
* @return string 處理後的原文或者經過 base64_encode 處理後的密文
*
* @example
*
* $a = authcode('abc', 'ENCODE', 'key');