Просмотр поста

function capcha($hard) {
switch($hard){
case 2:
$num = range(10, 99); 
$first = array_rand($num);
$second = array_rand($num);
$size = 6;
break;
case 3:
$num = range(100, 999); 
$first = array_rand($num);
$second = array_rand($num);
$size = 8;
break;
default :
$num = range(1, 9); 
$first = array_rand($num);
$second = array_rand($num);
$size = 4; 
break;    
};
$sum = $num[$first] + $num[$second]; 
$_SESSION['capcha'] = $sum;
$img = $num[$first] . ' + ' . $num[$second];    
    
return $img . ' = <input type="text" size="' . $size . '" name="capcha"/><br/>';    
}