复制内容到剪贴板
代码:
<?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;
}
}
?>
