How create a increment code to a value like "al003651" in PHP?

Hi i need create a increment code to values like:

al003651 -> al003652 -> al003653

or

m000390 -> m000391 -> m00039开发者_C百科2

note that the number of zeros can vary...

Thanks, Celso.

---

<?php
$code = 'al003651';
preg_match("~([a-z]+)(\d+)~", $code, $results);
$length = strlen($results[2]);

//add one to the number
$number = (int) $results[2];
$number += 1;

//concat again
$code = $results[1];

//attach zeros
$diff = abs($length - strlen('' . $number));
$code .= str_repeat('0', $diff);

//attach new code
$code .= $number;
echo $code;
?>

---

PHP has these wonderful incrementors

$str = 'al003651';

for ($i = 0; $i < 16; $i++)
    echo $str++,'<br />';

echo '<hr />';

$str = 'm000390';

for ($i = 0; $i < 16; $i++)
    echo $str++,'<br />';

Though you'll need to trap for a change of prefix

$str = 'z91';

for ($i = 0; $i < 16; $i++)
    echo $str++,'<br />';

When the numeric part has incremented to all 9's, the alpha prefix will change