网页文字简繁转换函数

<? 
function isgb($code) 
{ 
if (strlen($code)>=2) 
{ 
$code=strtok($code,""); 
if ((ord($code[0]) < 161)||(ord($code[0]) >= 247)) 
{ 
return (0); 
} 
else 
{ 
if ((ord($code[1]) <= 161)||(ord($code[1]) >= 254)) 
{ 
return (0); 
} 
else 
{ 
return (1); 
} 
} 
} 
else 
{ 
return (1); 
} 
} 

function gboffset($code) 
{ 
if (strlen($code) >= 2) 
{ 
$code=strtok($code,""); 
return ((ord($code[0]) - 161) * 94 + (ord($code[1]) - 161)); 
} 
else 
{ 
return(-1); 
} 
} 

function wordtostring($code) 
{ 
return (chr(hexdec(substr($code,0,2))).chr(hexdec(substr($code,2,2)))); 
} 

function gbtobig5($code) 
{ 
include "data_gb.php"; 
$output=""; 
$length=strlen($code); 
$code=strtok($code,""); 
$idx=0; 
while ($idx < $length) 
{ 
$tmpStr=$code[$idx].$code[$idx+1]; 

if (isgb($tmpStr)) 
{ 
$offset=gboffset($tmpStr); 
if (($offset >= 0)||($offset <= 8177)) 
{ 
$output.=wordtostring($gborder[$offset]); 
$idx++; 
} 
else 
{ 
$output.= $code[$idx]; 
} 
} 
else 
{ 
$output.= $code[$idx]; 
} 
$idx++; 
} 
return ($output); 
}; 
?>

使用方法:

1. 将以上代码另存为gbtobig5.php

2. 在需要的页面引入gbtobig5.php
<?php incude('gbtobig5.php'); ?>

3. 对目标字段套用函数，实现格式化输出
<?php echo gbtobig5($txt);
?>