Incrementing a string by one in PHP

Question

I am struggling to find a way to increment a specific pattern required. For each new member, they are given a unique ID such as ABC000001. Each new members

Answer 1

Possible answer without regex. Runs through each character and checks if it is a number or not. Then uses sprintf() to make sure leading 0s are still there.

$str = "ABC000001";
$number = "";
$prefix = "";
$strArray = str_split($str);
foreach ($strArray as $char) {  
    if (is_numeric($char))  {
        $number .= $char;   
    } else {
        $prefix .= $char;   
    }
}
$length = strlen($number);

$number = sprintf('%0' . $length . 'd', $number + 1);
echo $prefix . $number;

This works for this instance but would not work if the prefix had numbers in it.