DedeCMS中用到的字符编码转换1
PHP自带的iconv和mbstring库都可以完成这项工作，但一般的虚拟主机很少支持
其中的全局变量在include/common.inc.php
库文件在include/data下
<?php if(!defined('DEDEINC')) exit('dedecms');/** * DedeCMS中用到的字符编码转换的小助手函数 * * @version $Id: charset.helper.php 1 2010-07-05 11:43:09Z tianya $ * @package DedeCMS.Helpers * @copyright Copyright (c) 2007 - 2010, DesDev, Inc. * @license http://help.dedecms.com/usersguide/license.html * @link http://www.dedecms.com */$UC2GBTABLE = $CODETABLE = $BIG5_DATA = $GB_DATA = '';$GbkUniDic = null;/** * UTF-8 转GB编码 * * @access public * @param string $utfstr 需要转换的字符串 * @return string */if ( ! function_exists('utf82gb')){ function utf82gb($utfstr) { if(function_exists('iconv')) { return iconv('utf-8','gbk//ignore',$utfstr); } global $UC2GBTABLE; $okstr = ""; if(trim($utfstr)=="") { return $utfstr; } if(empty($UC2GBTABLE)) { $filename = DEDEINC."/data/gb2312-utf8.dat"; $fp = fopen($filename,"r"); while($l = fgets($fp,15)) { $UC2GBTABLE[hexdec(substr($l, 7, 6))] = hexdec(substr($l, 0, 6)); } fclose($fp); } $okstr = ""; $ulen = strlen($utfstr); for($i=0;$i<$ulen;$i++) { $c = $utfstr[$i]; $cb = decbin(ord($utfstr[$i])); if(strlen($cb)==8) { $csize = strpos(decbin(ord($cb)),"0"); for($j=0;$j < $csize;$j++) { $i++; $c .= $utfstr[$i]; } $c = utf82u($c); if(isset($UC2GBTABLE[$c])) { $c = dechex($UC2GBTABLE[$c]+0x8080); $okstr .= chr(hexdec($c[0].$c[1])).chr(hexdec($c[2].$c[3])); } else { $okstr .= "&#".$c.";"; } } else { $okstr .= $c; } } $okstr = trim($okstr); return $okstr; }}/** * GB转UTF-8编码 * * @access public * @param string $gbstr gbk的字符串 * @return string */if ( ! function_exists('gb2utf8')){ function gb2utf8($gbstr) { if(function_exists('iconv')) { return iconv('gbk','utf-8//ignore',$gbstr); } global $CODETABLE; if(trim($gbstr)=="") { return $gbstr; } if(empty($CODETABLE)) { $filename = DEDEINC."/data/gb2312-utf8.dat"; $fp = fopen($filename,"r"); while ($l = fgets($fp,15)) { $CODETABLE[hexdec(substr($l, 0, 6))] = substr($l, 7, 6); } fclose($fp); } $ret = ""; $utf8 = ""; while ($gbstr != '') { if (ord(substr($gbstr, 0, 1)) > 0x80) { $thisW = substr($gbstr, 0, 2); $gbstr = substr($gbstr, 2, strlen($gbstr)); $utf8 = ""; @$utf8 = u2utf8(hexdec($CODETABLE[hexdec(bin2hex($thisW)) - 0x8080])); if($utf8!="") { for ($i = 0;$i < strlen($utf8);$i += 3) $ret .= chr(substr($utf8, $i, 3)); } } else { $ret .= substr($gbstr, 0, 1); $gbstr = substr($gbstr, 1, strlen($gbstr)); } } return $ret; }}/** * Unicode转utf8 * * @access public * @param string $c Unicode的字符串内容 * @return string */if ( ! function_exists('u2utf8')){ function u2utf8($c) { for ($i = 0;$i < count($c);$i++) { $str = ""; } if ($c < 0x80) { $str .= $c; } else if ($c < 0x800) { $str .= (0xC0 | $c >> 6); $str .= (0x80 | $c & 0x3F); } else if ($c < 0x10000) { $str .= (0xE0 | $c >> 12); $str .= (0x80 | $c >> 6 & 0x3F); $str .= (0x80 | $c & 0x3F); } else if ($c < 0x200000) { $str .= (0xF0 | $c >> 18); $str .= (0x80 | $c >> 12 & 0x3F); $str .= (0x80 | $c >> 6 & 0x3F); $str .= (0x80 | $c & 0x3F); } return $str; }}/** * utf8转Unicode * * @access public * @param string $c UTF-8的字符串信息 * @return string */if ( ! function_exists('utf82u')){ function utf82u($c) { switch(strlen($c)) { case 1: return ord($c); case 2: $n = (ord($c[0]) & 0x3f) << 6; $n += ord($c[1]) & 0x3f; return $n; case 3: $n = (ord($c[0]) & 0x1f) << 12; $n += (ord($c[1]) & 0x3f) << 6; $n += ord($c[2]) & 0x3f; return $n; case 4: $n = (ord($c[0]) & 0x0f) << 18; $n += (ord($c[1]) & 0x3f) << 12; $n += (ord($c[2]) & 0x3f) << 6; $n += ord($c[3]) & 0x3f; return $n; } }}/** * Big5码转换成GB码 * * @access public * @param string $Text 字符串内容 * @return string */if ( ! function_exists('big52gb')){ function big52gb($Text) { if(function_exists('iconv')) { return iconv('big5','gbk//ignore',$Text); } global $BIG5_DATA; if(empty($BIG5_DATA)) { $filename = DEDEINC."/data/big5-gb.dat"; $fp = fopen($filename, "rb"); $BIG5_DATA = fread($fp,filesize($filename)); fclose($fp); } $max = strlen($Text)-1; for($i=0;$i<$max;$i++) { $h = ord($Text[$i]); if($h>=0x80) { $l = ord($Text[$i+1]); if($h==161 && $l==64) { $gbstr = " "; } else { $p = ($h-160)*510+($l-1)*2; $gbstr = $BIG5_DATA[$p].$BIG5_DATA[$p+1]; } $Text[$i] = $gbstr[0]; $Text[$i+1] = $gbstr[1]; $i++; } } return $Text; }}/** * GB码转换成Big5码 * * @access public * @param string $Text 字符串内容 * @return string */if ( ! function_exists('gb2big5')){ function gb2big5($Text) { if(function_exists('iconv')) { return iconv('gbk','big5//ignore',$Text); } global $GB_DATA; if(empty($GB_DATA)) { $filename = DEDEINC."/data/gb-big5.dat"; $fp = fopen($filename, "rb"); $gb = fread($fp,filesize($filename)); fclose($fp); } $max = strlen($Text)-1; for($i=0;$i<$max;$i++) { $h = ord($Text[$i]); if($h>=0x80) { $l = ord($Text[$i+1]); if($h==161 && $l==64) { $big = " "; } else { $p = ($h-160)*510+($l-1)*2; $big = $GB_DATA[$p].$GB_DATA[$p+1]; } $Text[$i] = $big[0]; $Text[$i+1] = $big[1]; $i++; } } return $Text; }}/** * unicode url编码转gbk编码函数 * * @access public * @param string $str 转换的内容 * @return string */if ( ! function_exists('UnicodeUrl2Gbk')){ function UnicodeUrl2Gbk($str) { //载入对照词典 if(!isset($GLOBALS['GbkUniDic'])) { $fp = fopen(DEDEINC.'/data/gbk-unicode.dat','rb'); while(!feof($fp)) { $GLOBALS['GbkUniDic'][bin2hex(fread($fp,2))] = fread($fp,2); } fclose($fp); } //处理字符串 $str = str_replace('$#$','+',$str); $glen = strlen($str); $okstr = ""; for($i=0; $i < $glen; $i++) { if($glen-$i > 4) { if($str[$i]=='%' && $str[$i+1]=='u') { $uni = strtolower(substr($str,$i+2,4)); $i = $i+5; if(isset($GLOBALS['GbkUniDic'][$uni])) { $okstr .= $GLOBALS['GbkUniDic'][$uni]; } else { $okstr .= "&#".hexdec('0x'.$uni).";"; } } else { $okstr .= $str[$i]; } } else { $okstr .= $str[$i]; } } return $okstr; }}/** * 自动转换字符集 支持数组转换 * * @access public * @param string $str 转换的内容 * @return string */if ( ! function_exists('AutoCharset')){ function AutoCharset($fContents, $from='gbk', $to='utf-8') { $from = strtoupper($from)=='UTF8'? 'utf-8' : $from; $to = strtoupper($to)=='UTF8'? 'utf-8' : $to; if( strtoupper($from) === strtoupper($to) || empty($fContents) || (is_scalar($fContents) && !is_string($fContents)) ){ //如果编码相同或者非字符串标量则不转换 return $fContents; } if(is_string($fContents) ) { if(function_exists('mb_convert_encoding')) { return mb_convert_encoding ($fContents, $to, $from); } elseif (function_exists('iconv')) { return iconv($from, $to, $fContents); } else { return $fContents; } } elseif(is_array($fContents)) { foreach ( $fContents as $key => $val ) { $_key = AutoCharset($key,$from,$to); $fContents[$_key] = AutoCharset($val,$from,$to); if($key != $_key ) unset($fContents[$key]); } return $fContents; } else{ return $fContents; } }}?>