php实现编码的转换

php实现编码的转换,这里会把gb2312转换成utf-8

澳门新葡亰3522平台游戏,function gb2utf8($gb) {if( !trim($gb) ) return $gb;$utf8=”;while($gb) {
if( ord(substr($gb,0,1)) 127 )
{$t=substr($gb,0,2);$gb=substr($gb,2);$utf8 .=
$this-u2utf8($this-codetable[hexdec(bin2hex($t))-0x8080]); } else {
$t=substr($gb,0,1);$gb=substr($gb,1);$utf8 .= $this-u2utf8($t); }}return
$utf8; } function u2utf8($c) {$str=”;if ($c 0x80) { $str.=$c; }else if
($c 0x800) { $str.=chr(0xC0 | $c6); $str.=chr(0x80 | $c 0x3F); }else if
($c 0x10000) { $str.=chr(0xE0 | $c12); $str.=chr(0x80 | $c6
0x3F);$str.=chr(0x80 | $c 0x3F);}else if ($c 0x200000) { $str.=chr(0xF0
| $c18); $str.=chr(0x80 | $c12 0x3F); $str.=chr(0x80 | $c6 0x3F);
$str.=chr(0x80 | $c 0x3F);}return $str; }

} 说一点,编码集我就不写出来了,用for一下就知道了.