How the character code in PHP

[softgroups]

I known i can get the ASCII code of an character using ord() but i want to encode a string like %45,%20, so i need the HEX code or however it's called

[sea otter]

rawurlencode() (http://us3.php.net/manual/en/function.rawurlencode.php)

[softgroups]

that do not encrypt the string, only the special characters from the string!

[nico_swd]

This should do what you want.


function str_to_hex($string)
{
$hex = '';
$len = strlen($string);

for ($i = 0; $i < $len; $i++)
{
$hex .= '%' . str_pad(dechex(ord($string[$i])), 2, 0, STR_PAD_LEFT);
}

return $hex;
}

[softgroups]

One more question , how i can do the reverse of this!?

[sea otter]

In keeping with nico's scheme of things :)


function hex_to_str($hex)
{
$string = '';
$data = explode('%',$hex);
$len = count($data);
for ($i=1; $i < $len; $i++) // yes, ONE. skip first array element, which is empty
$string .= chr(hexdec($data[$i]));
return $string;
}