Program for converting Simplified Chinese to Traditional Chinese_PHP tutorial

PHP代码:--------------------------------------------------------------------------------
/**
*Medium speed version, medium memory usage, used for general needs or large text with a large number of repeated words
*@text: string to be converted
*@table_file: conversion mapping table file name
*/
function encode_trans1($text,$table_file='gb2big5') {
$fp = fopen($table_file.'.table', "r");
$cache = array();
$max=strlen($text)-1;
for($i=0;$i<$max;$i++) {
$h=ord($text[$i]);
if($h>=160) {
$l=ord($text[$i+1]);
if($h==161 && $l==64) {
$text[$i]=" ";
} else{
$cut = substr($text,$i,2);
if(!$cache[$cut]) {
fseek($fp,($h-160)*510+($l-1)*2);
$cache[$cut] = fread($fp,2);
}
$text[$i] = $cache[$cut][0];
$text[++$i] = $cache[$cut][1];
}
}
}
fclose($fp);
return $text;
}
/**
*Low-speed version, lowest memory usage, used when a small number of characters
*@text: string to be converted
*@table_file: conversion mapping table file name
*/
function encode_trans2($text,$table_file='gb2big5') {
$fp = fopen($table_file.'.table', "r");
$max=strlen($text)-1;
for($i=0;$i<$max;$i++) {
$h=ord($text[$i]);
if($h>=160) {
$l=ord($text[$i+1]);
if($h==161 && $l==64) {
$gb=" ";
}else{
fseek($fp,($h-160)*510+($l-1)*2);
$gb=fread($fp,2);
}
$text[$i]=$gb[0];
$text[$i+1]=$gb[1]; $i++;
}
}
fclose($fp);
return $text;
}
/**
*高速版，最高内存使用，使用于大段文本时

http://www.bkjia.com/PHPjc/629338.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/629338.htmlTechArticlePHP代码:-------------------------------------------------------------------------------- ?php /** *中速版，中等内存使用，使用于一般需求或有大量重复字的大段...