以前花了不少时间，找可以把中文转ascii码的php代码，utf-8也只是ascii的一种。后来中手册上找到了个，把他改为了批量转换，还增加了一个常用的ascii代码还原字符。这个代码写好了有一段时间了，没什么时间把这些贴出来，大家可以看看，这个类不止只是中文的转换哟
| < ?php |
| class ascii |
| { |
| function decode($str) |
| { |
| preg_match_all( "/(d{2,5})/", $str,$a); |
| $a = $a[0]; |
| foreach ($a as $dec) |
| { |
| if ($dec < 128) |
| { |
| $utf .= chr($dec); |
| } |
| else if ($dec < 2048) |
| { |
| $utf .= chr(192 + (($dec - ($dec % 64)) / 64)); |
| $utf .= chr(128 + ($dec % 64)); |
| } |
| else |
| { |
| $utf .= chr(224 + (($dec - ($dec % 4096)) / 4096)); |
| $utf .= chr(128 + ((($dec % 4096) - ($dec % 64)) / 64)); |
| $utf .= chr(128 + ($dec % 64)); |
| } |
| } |
| return $utf; |
| } |
| function encode($c) |
| { |
| $len = strlen($c); |
| $a = 0; |
| while ($a < $len) |
| { |
| $ud = 0; |
| if (ord($c{$a}) >=0 && ord($c{$a})< =127) |
| { |
| $ud = ord($c{$a}); |
| $a += 1; |
| } |
| else if (ord($c{$a}) >=192 && ord($c{$a})< =223) |
| { |
| $ud = (ord($c{$a})-192)*64 + (ord($c{$a+1})-128); |
| $a += 2; |
| } |
| else if (ord($c{$a}) >=224 && ord($c{$a})< =239) |
| { |
| $ud = (ord($c{$a})-224)*4096 + (ord($c{$a+1})-128)*64 + (ord($c{$a+2})-128); |
| $a += 3; |
| } |
| else if (ord($c{$a}) >=240 && ord($c{$a})< =247) |
| { |
| $ud = (ord($c{$a})-240)*262144 + (ord($c{$a+1})-128)*4096 + (ord($c{$a+2})-128)*64 + (ord($c{$a+3})-128); |
| $a += 4; |
| } |
| else if (ord($c{$a}) >=248 && ord($c{$a})< =251) |
| { |
| $ud = (ord($c{$a})-248)*16777216 + (ord($c{$a+1})-128)*262144 + (ord($c{$a+2})-128)*4096 + (ord($c{$a+3})-128)*64 + (ord($c{$a+4})-128); |
| $a += 5; |
| } |
| else if (ord($c{$a}) >=252 && ord($c{$a})< =253) |
| { |
| $ud = (ord($c{$a})-252)*1073741824 + (ord($c{$a+1})-128)*16777216 + (ord($c{$a+2})-128)*262144 + (ord($c{$a+3})-128)*4096 + (ord($c{$a+4})-128)*64 + (ord($c{$a+5})-128); |
| $a += 6; |
| } |
| else if (ord($c{$a}) >=254 && ord($c{$a})< =255) |
| { //error |
| $ud = false; |
| } |
| $scill .= "&#$ud;"; |
| } |
| return $scill; |
| } |
| } |
| ?> |
使用任何字符集看，效果都是一样的，效果地址如下：
http://qh8.net/test/class.ascii.php
