“/*加密*/

function addcoder($str)

{

$yuan = 'abA!c1dB#ef2@Cg$h%iD_3jkl^E:m}4n.o{&F*p)5q(G-r[sH]6tuIv7w+Jxy8z9K0';

$jia = 'zAy%0Bx+1C$wDv^Eu2-t3(F{sr&G4q_pH5*on6I)m:l7.Jk]j8K}ih@gf9#ed!cb[a';

if ( strlen($str) == 0) return false;

for($i = 0;$i

{

for($j = 0;$j

{

if($str[$i]==$yuan[$j])

{

$results.= $jia[$j];

break;

}

}

}

return $results;

}

/*解密*/

function removecoder($str)

{

$yuan = 'abA!c1dB#ef2@Cg$h%iD_3jkl^E:m}4n.o{&F*p)5q(G-r[sH]6tuIv7w+Jxy8z9K0';

$jia = 'zAy%0Bx+1C$wDv^Eu2-t3(F{sr&G4q_pH5*on6I)m:l7.Jk]j8K}ih@gf9#ed!cb[a';

If (strlen($str)==0) return false;

for($i = 0;$i< strlen($str);$i++)

{

for($j = 0;$j

{

if($str[$i]==$jia[$j])

{

$results .= $yuan[$j];

break;

}

}

}

return $results;

}

$str = "www.111cn.net";

echo "加密前：".$str."
";

$str1= addcoder($str);

echo "加密后：".$str1."
";

$str2= removecoder($str1);

echo "解密后：".$str2."
";