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编码对照表的使用(1)

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Release: 2016-06-21 09:11:45
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编码

/**
* 当制作好编码对照表后,并不能马上使用还需对其进行一些加工
* 当然简单的查表是可以的但效率不高
* 现在以繁简转换为例,说明对照表的使用
*/

/**
* 连接并打开对照表
*/
$conn = mysql_connect();
mysql_select_db("unicode");
/**
* 提取其中big5和gbk编码,表中big5只有13487个(包括符号)
*/
$sql = "select gbk,big5,gb2312 from unicode where big5 != ''";
//$sql = "select * from unicode";
$rs = mysql_query($sql);
echo mysql_num_rows($rs)."
";
/**
* 读取数据到数组,注意key和value的处理
*/
$code = array(0=>"gb",big5=>0);

while($row = mysql_fetch_array($rs)) {
  $code[pack("H4",$row][gbk])] = pack("H4",$row[big5]);
//  $code[$row][gb2312]] = pack("H4",$row[big5]);
}

mysql_close($conn);

function gb_big5($s) {
  global $code;
  $v = "";
  if($code[0] == "big5")
    $code = $arr_flip($code);
  for($i=0;$i    if(ord($s[$i]) > 0x7f) {
      $p = sprintf("%02X%02X",$s[$i],$s[$i+1]);
      $p = $s[$i].$s[$i+1];
      $ch = $code[$p];
      if($ch == "")
        $ch = $s[$i].$s[$i+1];
      $v .= $ch;
      $i++;
    }else
      $v .= $s[$i];
  }
  return $v;
}
echo '';
echo gb_big5('

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