php中big5转utf8乱码怎么办？

php中big5转utf8乱码的解决办法：首先生成tab文件，并生成时要保证tab文件不存在；然后将指定页面转码测试；接着打印出文字库；最后big5转【utf-8】即可。

php中big5转utf8乱码的解决办法：

第一步：生成tab文件,生成时要保证tab文件不存在才可以

writebig5UnicodeFile();

第二步：指定页面转码测试

testCode();

第三步：打印出文字库

printfCode();

<?php
//生成big5-unicode 编码文件
function loadBig5(){
    $fp = fopen( './big5-unicode.txt', 'r' );
    $big5_unicode_arr = array();
    while($one_line = fgets($fp)) {
   $one_line_arr = explode("\t",$one_line);
   $big5 = hexdec(trim($one_line_arr[0]));
   $unicode = trim($one_line_arr[1]);
   if(strpos($unicode,',')) {
  $unicode = ltrim(explode(',',$unicode)[0],'<');
   }
   
   $big5_unicode_arr[$big5] = hexdec($unicode);
    }
    
    return $big5_unicode_arr;
}
 
//追加形式写入文件
function putContent($content) {
    static $fp;
    if(!isset($fp)) {
   $fp = fopen( './big5-unicode-new.tab', 'a+' );
    }
    
    fwrite($fp,$content);
}
 
//生成tab文件
function writebig5UnicodeFile() {
    $big5_unicode_arr = loadBig5();
    $big5_unicod_content = array();
    $min = 2000;
    $max = 0;
    $max_unicode = 0;
    foreach($big5_unicode_arr as $big5 => $unicode) {
   $h = floor($big5/256);
   $l = $big5%256;
   $index = ($h-135)*256*3+$l*3;
   
   if($index<$min) {
  $min = $index;
   }
   
   if($max<$index) {
  $max = $index;
   }
   
   if($unicode>$max_unicode) {
  $max_unicode = $unicode;
   }
   
   $h_1 = floor($unicode/65536);
   $h_2 = floor($unicode/256);
   $h_3 = $unicode%256;
   
   $big5_unicod_content[$index] = chr($h_1).chr($h_2).chr($h_3);
    }
    
    for($i=0;$i<=$max;$i=$i+3) {
   if(!isset($big5_unicod_content[$i])) {
  $big5_unicod_content[$i] = chr(0).chr(0).chr(0);
   }
    }
    
    for($i=0;$i<=$max;$i=$i+3) {
   if(strlen($big5_unicod_content[$i]) == 3) {
  putContent($big5_unicod_content[$i]);
   }else{
  die('error');
   }
    }
}
 
//测试编辑结果
function testCode() {
    $content = file_get_contents( './temlate_2.html');
    echo b2u($content);
}
 
//打印出编码库文字
function printfCode() {
    $fp = fopen( './big5-unicode-new.tab', 'r' );
    $len = filesize('./big5-unicode-new.tab');
    $x = 0;
    $outstr = array();
    //fseek( $fp, 21000 - 900 + 42*3);
    for($i=$x=0;$i<$len;$i=$i+3) {
   $uni = fread( $fp, 3 );
   $codenum = ord($uni[0])*65536 + ord($uni[1])*256 + ord($uni[2]);
   if($codenum == 0) {
  $outstr[$x++] = ' ';
   }elseif( $codenum < 0x80 ) {
  $outstr[$x++] = chr($codenum);
   }elseif($codenum < 0x800) {
  $outstr[$x++] = chr( 192 + $codenum / 64 );
  $outstr[$x++] = chr( 128 + $codenum % 64 );
 
   }elseif($codenum < 0x10000){
  $outstr[$x++] = chr( 224 + floor($codenum / 4096 ));
  $codenum = $codenum%4096;
  $outstr[$x++] = chr( 128 + floor($codenum / 64 ));
  $outstr[$x++] = chr( 128 + ($codenum % 64) );
   }else{
  $outstr[$x++] = chr( 240 + floor($codenum / 262144 ));
  $codenum = $codenum%262144;
  $outstr[$x++] = chr( 128 + floor($codenum / 4096 ));
  $codenum = $codenum%4096;
  $outstr[$x++] = chr( 128 + ($codenum / 64) );
  $outstr[$x++] = chr( 128 + ($codenum % 64) );
   }
    }
 
    echo join( '', $outstr);
}
 
//big5 转 utf-8
function b2u( $instr ) {
    $fp = fopen( './big5-unicode-new.tab', 'r' );
    $len = strlen($instr);
    $outstr = '';
    for( $i = $x = 0 ; $i < $len ; $i++ ) {
   $h = ord($instr[$i]);
   if( $h >= 135 ) {
  $l = ord($instr[$i+1]);
  
  fseek( $fp, ($h-135)*256*3+$l*3 );
  $uni = fread( $fp, 3 );
  
  $codenum = ord($uni[0])*65536 + ord($uni[1])*256 + ord($uni[2]);
  
  if($codenum == 0) {
 $outstr[$x++] = ' ';
  }elseif( $codenum < 0x80 ) {
 $outstr[$x++] = chr($codenum);
  }elseif($codenum < 0x800) {
 $outstr[$x++] = chr( 192 + $codenum / 64 );
 $outstr[$x++] = chr( 128 + $codenum % 64 );
 
  }elseif($codenum < 0x10000){
 $outstr[$x++] = chr( 224 + floor($codenum / 4096 ));
 $codenum = $codenum%4096;
 $outstr[$x++] = chr( 128 + floor($codenum / 64 ));
 $outstr[$x++] = chr( 128 + ($codenum % 64) );
  }else{
 $outstr[$x++] = chr( 240 + floor($codenum / 262144 ));
 $codenum = $codenum%262144;
 $outstr[$x++] = chr( 128 + floor($codenum / 4096 ));
 $codenum = $codenum%4096;
 $outstr[$x++] = chr( 128 + ($codenum / 64) );
 $outstr[$x++] = chr( 128 + ($codenum % 64) );
  }
  $i++;
   }
   else
  $outstr[$x++] = $instr[$i];
    }
    fclose($fp);
    if( $instr != '' )
   return join( '', $outstr);
}

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