need help with str_replace and array

Hello there, im working to some code but i get stuck hope someone can help me with this

 function id( $id ) {
  $1 = array(
   "1",   "t",   "r"
  );

  if (preg_match("/1/i", $id)) {
   $id = str_replace('1', $1[rand(0,3)], $id);
  }

  return $id;

 }

PHP:

if i put like this

echo id( '1221133' );

will show me " r22rr33 " how i can make to get random value for every 1 example to be " r22t133 "

 

You can use for ()

$newstr = '';
for ($i = 0; $i < strlen($str); $i++)
{if ($str[$i] == '1') {$newstr.= rand(0,3);} else {$newstr .= $str[$i];}
}
echo $newstr;

PHP:

 

hello there, i try this command but its not working, what im try to do its my own encrypt code

 

One issue with your existing code is that rand might be calling a non-existent element. It should be rand(0,2) since there are only 3 items total in the $1 array.

Can you tell me how you plan on reversing the encryption, since there's a possibility of 1 being replaced by 1?

Thanks

 

The script can show how lol 1 will not be all time 1 can be t or r hard to find the real code ... anyway what i put there on the script its just example i just need the command to can get every 1 with difrent value 1 or t or r exampe 1211223 = r2t1223 or t2tr223 or etc ...

 

You can't have variables that are just a number, or starting with a number.

$1 will not work.

$asdf is better.