Letter / Number Replace Code

I need a peice of code that will take the submitted username and show the letters and numbers in the username:

name inputted: D412REN

will show as LNNNLLL

is this possible - been racking my brains and got nothing but a headache.

Thanks in advance!

 

it doesn't need to REPLACE the name just SHOW the types of characters in the username - hope this makes it clearer.

 

jus wrote it for you. Its a function.

// assume you got a string stored in variable $string
$string = 'D412REN';

function differentiate($string) {
$string = str_split($string,1);
    foreach($string as $string_) {
        if (is_numeric($string_)) { 
            $return .= 'N';
        } else {
            $return .= 'L';
        }
    }
return $return;
}

// output : LNNNLLL
print differentiate($string);

PHP:

Use this function differentiate($string) whenever you want to split the $string.

 

Thanks Great... but:

i'm still running php4... any alternative for str_split as this is for php5

 

Thats Great, But my server uses php4 so is there a way around the str_split function?

 

$str = 'D412REN';
$whats_in_it = preg_replace('#\d#', 'N', preg_replace('#[A-Z]#i', 'L', $str));

echo $whats_in_it;

Code (markup):

 

oh sorry. PHP4 this is the one

$string = 'D412REN';

function differentiate($string) {
$string = preg_split('//', $string, -1, PREG_SPLIT_NO_EMPTY);
    foreach($string as $string_) {
        if (is_numeric($string_)) { 
            $return .= 'N';
        } else {
            $return .= 'L';
        }
    }
return $return;
}

print differentiate($string);

PHP:

 

I agree! preg_replace is less code though you hit the regex engine. But this would be easier.

 

People have this irrational fear of the regex engine as 'slow' - It's sure as shine going to be faster to let regex which is native compiled C code handle processing a string than it's going to be having an interpreted loop go through the string one character at a time.

Single native function vs. interpreted loop, interpreted type checking, interpreted string building and interpreted conditional? Gee, let me think...

 

Thanks to all for your help but using ads2help's version as a starter for my project...

 

ahh, now is there any chance of this being adapted so vowels are shown as a 'V'?

 

I use the script i gave u last time and made some slight changes

$string = 'D412REN';

function differentiate($string) {
$string = preg_split('//', $string, -1, PREG_SPLIT_NO_EMPTY);
    foreach($string as $string_) {
        if (is_numeric($string_)) {
            $return .= 'N';
        } else {
            $string_ = strtolower($string_);
            if ($string_ == 'a' || $string_ == 'e' || $string_ == 'i' || $string_ == 'o' || $string_ == 'u') {
                $return .= 'V';
            } else {
                $return .= 'L';
            }
        }
    }
return $return;
}

print differentiate($string);

PHP:

 

You're a star... i'd tried that but had it down as $string instead of $string_

 

ahh sorry =D
Good luck.

 

I'm looking at that function - why bother with the regexp if you aren't going to use a regexp in the first place, especially since a string is indexable just like an array?

Likewise, given the number of results being compared, would not a SWITCH run significantly faster than multiple if/and's?

function differentiate($inString) {
	for ($t=0; $t<strlen($inString); $t++) {
		if (is_numeric($inString[$t])) {
			$result.='N';
		} else {
			switch (strtolower($inString[$t])) {
				case 'a':
				case 'e':
				case 'i':
				case 'o':
				case 'u':
					$result.='V';
				break;
				default:
					$result.='L';
			}
		}
	}
	return $result;
}

Code (markup):

Better, no?

That's why calling it $string_ is kind of shortsighted and sloppy. $char would have been more appropriate - NOT that I would use a variable with the same exact name as a type... Which is why I renamed them in my rewrite - But that's just me being a disciple at the church of Wirth.

 

Yes faster. I just learn something : string is array indexable
sorry and thank you

 

NEVER say sorry if you didn't know something. If I was able to teach you a new trick, then I'm, to borrow from Carlin, more than happy. Programming should always be about learning something new - the day there's nothing new to learn is the day the world leaves you behind.

 

And??

I simply was agreeing with using regex but mention hitting the regex engine because of the very thing you said. Because people have this "fear" of regex engine. I would use regex in this case. But thanks for taking the time to let me know.