119 lines
3.1 KiB
PHP
119 lines
3.1 KiB
PHP
<?php
|
||
/*
|
||
* @copyright QiaoQiaoShiDai Internet Technology(Shanghai)Co.,Ltd
|
||
* @license https://www.oaooa.com/licenses/
|
||
*
|
||
* @link https://www.oaooa.com
|
||
* @author zyx(zyx@oaooa.com)
|
||
*/
|
||
|
||
define ('UTF32_BIG_ENDIAN_BOM' , chr(0x00) . chr(0x00) . chr(0xFE) . chr(0xFF));
|
||
|
||
define ('UTF32_LITTLE_ENDIAN_BOM', chr(0xFF) . chr(0xFE) . chr(0x00) . chr(0x00));
|
||
|
||
define ('UTF16_BIG_ENDIAN_BOM' , chr(0xFE) . chr(0xFF));
|
||
|
||
define ('UTF16_LITTLE_ENDIAN_BOM', chr(0xFF) . chr(0xFE));
|
||
|
||
define ('UTF8_BOM' , chr(0xEF) . chr(0xBB) . chr(0xBF));
|
||
class Encode_Core {
|
||
|
||
/**
|
||
* 文件分析方法来检查UNICODE文件，ANSI文件没有文件头，此处不分析
|
||
*/
|
||
private function detect_utf_encoding($text) {
|
||
$first2 = substr($text, 0, 2);
|
||
$first3 = substr($text, 0, 3);
|
||
$first4 = substr($text, 0, 3);
|
||
if ($first3 == UTF8_BOM) return 'UTF-8';
|
||
|
||
elseif ($first4 == UTF32_BIG_ENDIAN_BOM) return 'UTF-32BE';
|
||
|
||
elseif ($first4 == UTF32_LITTLE_ENDIAN_BOM) return 'UTF-32LE';
|
||
|
||
elseif ($first2 == UTF16_BIG_ENDIAN_BOM) return 'UTF-16BE';
|
||
|
||
elseif ($first2 == UTF16_LITTLE_ENDIAN_BOM) return 'UTF-16LE';
|
||
|
||
return '';
|
||
|
||
}
|
||
/**
|
||
* 检测是否GB2312编码
|
||
* @param string $str
|
||
* @since 2012-03-20
|
||
* @return boolean
|
||
*/
|
||
private function is_gb2312($str) {
|
||
for($i=0; $i<strlen($str); $i++) {
|
||
$v = ord( $str[$i] );
|
||
if( $v > 127) {
|
||
if( ($v >= 228) && ($v <= 233) ){
|
||
if( ($i+2) >= (strlen($str) - 1)) return true; // not enough characters
|
||
$v1 = ord( $str[$i+1] );
|
||
$v2 = ord( $str[$i+2] );
|
||
if( ($v1 >= 128) && ($v1 <=191) && ($v2 >=128) && ($v2 <= 191) )
|
||
return false;
|
||
else
|
||
return true; //GB编码
|
||
}
|
||
}
|
||
}
|
||
}
|
||
private function is_GBK($str){
|
||
$s1 = iconv('gbk','utf-8',$str);
|
||
$s0 = iconv('utf-8','gbk',$s1);
|
||
if($s0 == $str){
|
||
return true;
|
||
}else{
|
||
return false;
|
||
}
|
||
}
|
||
/**
|
||
* 取得编码
|
||
* @param string $str
|
||
* @return string $encoding
|
||
*/
|
||
public static function get_encoding($str){
|
||
$ary = array();
|
||
|
||
//$ary[] = "ASCII";
|
||
$ary[] = "UTF-8";
|
||
$ary[] = "GB18030";//简体码
|
||
$ary[] = "BIG-5";//繁体码
|
||
$ary[] = "EUC-CN";
|
||
$ary[] = "JIS";//日文编码
|
||
$ary[] = "EUC-JP";//日文编码
|
||
$encoding= self::detect_utf_encoding($str);
|
||
if(empty($encoding) && self::is_gb2312($str)) return 'GBK';
|
||
if(empty($encoding)){
|
||
$encoding=mb_detect_encoding($str,$ary);
|
||
}
|
||
if($encoding=='ASCII') $encoding='UTF-8';
|
||
return $encoding;
|
||
}
|
||
|
||
public function utf16_to_utf8($str) {
|
||
|
||
$len = strlen($str);
|
||
$dec = '';
|
||
for ($i = 0; $i < $len; $i += 2) {
|
||
$c = ($be) ? ord($str[$i]) << 8 | ord($str[$i + 1]) :
|
||
ord($str[$i + 1]) << 8 | ord($str[$i]);
|
||
if ($c >= 0x0001 && $c <= 0x007F) {
|
||
$dec .= chr($c);
|
||
} else if ($c > 0x07FF) {
|
||
$dec .= chr(0xE0 | (($c >> 12) & 0x0F));
|
||
$dec .= chr(0x80 | (($c >> 6) & 0x3F));
|
||
$dec .= chr(0x80 | (($c >> 0) & 0x3F));
|
||
} else {
|
||
$dec .= chr(0xC0 | (($c >> 6) & 0x1F));
|
||
$dec .= chr(0x80 | (($c >> 0) & 0x3F));
|
||
}
|
||
}
|
||
return $dec;
|
||
}
|
||
}
|
||
|
||
?>
|