letter incrementer?

[onedumbcoder]

is there letter incrementer?

 

for example lets say i have

 

$letter = "A"

 

$incrementedLetter = incrementLetter($letter);?

[oopster]

Hello

 

For example

 

<?php
function incrementLetter($letter) 
{
   $letters = array('a','b','c','e');
   for($n=0; $n<=count($letter);$n++) {
    if(strtolower($letter)==$letters[$n]) return $letters[$n+1];
   }
}
?>

[marcusfaye87]

don't know if there is a built in function,

 

but if I had to make one:

 

A through Z

0 through 25

 

<?php

function incrementLetter($letter)
{
     $letters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
     $postion = strpos ($letter, $letters);

     $position++;
     return substr ($letters,$position,1);
}

?>

 

UPDATE: if end is reached, jump to A (0)

 

<?php

function incrementLetter($letter)
{
     $letters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
     $postion = strpos ($letter, $letters);

     $position++;
     
     if ($position == 26)
     {
     	// if you've reached the last letter "Z", and want to go one further, it'll jump back to "A"
	$postion = 0;
 }
     
     return substr ($letters,$position,1);
}

?>

[PFMaBiSmAd]

You can actually use the ++ increment operator -

 

$letter = "A";
echo $letter;
$letter++;
echo $letter;

[marcusfaye87]

You can actually use the ++ increment operator -

 

$letter = "A";
echo $letter;
$letter++;
echo $letter;

 

Man PHP is awesome

 

BTW, figured out mine doesn't work.

strpos returns a BOOLEAN response, not the actual position

 

How do you get the position a letter is at in a string then? :s

[marcusfaye87]

Mine failed because of a typo lol... very professional 

 

<?php

function incrementLetter($letter)
{
     $string = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
     $position = strpos ($string, $letter);

     $position++;
     
     if ($position == 26)
     {
     	// if you've reached the last letter "Z", and want to go one further, it'll jump back to "A"
	$postion = 0;
 }
     
     return substr ($string,$position,1);
}

$originalLetter = "A";
echo "The original letter is " . $originalLetter;
echo "<br />";
echo "<br />";

$temp = $originalLetter;

for ($i=0; $i<50; $i++)
{
$temp = incrementLetter($temp);
echo $temp . " ";
}

?>

 

But if it works with just using the increment operator, what's the use haha

[trq]

Another method is the range(0 function.

 

<?php

  foreach (range('a','z') as $letter) {
    echo $letter."\n";
  }

?>