View difference between Paste ID: mALngzvL and nUrtKRh5

     <head>
     <title>Convertidor</title>
     </head>
     <body>
     <?php
     //error_reporting(0);
     /* convert a string of hex values to an ascii string */
   function hex2str($hex) {
-    for($i=0;$i<strlen($hex);$i+=2)
+  		$str='';
     for($i=0;$i<strlen($hex);$i+2)
     $str .= chr(hexdec(substr($hex,$i,2)));
 
     return $str;
   }
 
   function ascii2hex($ascii) {
 	$hex = '';
 	for ($i = 0; $i < strlen($ascii); $i++) {
 	$byte = dechex(ord($ascii{$i}));
 	$byte = str_repeat('0', 2 - strlen($byte)).$byte;
 	$hex.=$byte;
 }
 return $hex;
 }
     $cifrar = htmlentities($_POST['cifrar'],ENT_QUOTES);
     $datos = htmlentities($_POST['datos'],ENT_QUOTES);
     $send = htmlentities($_POST['enviar'],ENT_QUOTES);
     $semilla = htmlentities($_POST['semilla'],ENT_QUOTES);
     if(!empty($cifrar) && !empty($datos)){
-            switch ($cifrar) {
+
-                    case 1:
+			if( $cifrar==1 )
                                     echo 'Resultado: '.base64_encode($datos);
-                            break;
+			else if( $cifrar==2 )
-                    case 2:
+
 			else if( $cifrar==3 )
-                            break;
+
-                    case 3:
+			else if( $cifrar==4 )
                     		    echo 'Resultado: '.hex2str($datos);
-                    	    break;
+			else if( $cifrar==5 )
-                    case 4:
+
 			else if( $cifrar==6 )
-                    	    break;
+
-                    case 5:
+			else
                                     echo 'No seleccionaste ninguno';
-                    	break;
+
-                    case 6:
+
             ?>
-                    	break;
+
-                    default:
+
             	var opcion= document.frm.cifrar.options.value;
-                            break;
+
-            }
+            	}
             </script>
             <form name="frm" action="" method="POST">
 
                     <textarea name="datos" rows="4" cols="50">Cifrar</textarea> <br>
 
                     <select name="cifrar" size="0" onchange="comprobaroption()">
                             <option value="1" selected>Ascci a Base64</option>
-
+
                             <option value="3">Ascii a Hex</option>
                             <option value="4">Hex a Ascii</option>
                             <option value="5">Urlencode</option>
                             <option value="6">Urldecode</option>
                             <option value="7">Cifrar Caesar</option>
                     </select><br>
                     <input type="text" name="semilla" size="3" disabled="true">
                     <input type="submit" name="enviar" value="Enviar datos!"  />
             </form>
             <?
 
     }
 
     ?>
 </body>