Question

I have an array where I want to get the next value.

$sorting = array(0 => "H 101", 1 => "S 101", 2 => "R 172", 3 => "D 141", 4 => "T 101", 5 => "K 101", 6 => "A 182", 7 => "G 101");

I have the current value taken from a SELECT statement. I have tried array_search but I can’t get it to do want I want.

Let’s say my current value is S 101, how can I get it to give me “R 172” as the next value which I then can use in a new SELECT statement.

And I also want it to get back to the first value (H 101) if the current value is the last (G 101).

Answer 1

Why have you explicitly specified the indices? These would be the same had you not done it.

From what I understand, array_search would be suitable for what you want.

$current = 'S 101';
$nextkey = array_search($current, $sorting) + 1;
if($nextkey == count($sorting)) {
    // reached end of array, reset
    $nextkey = 0;
}

$next = $sorting[$nextkey];

HOWEVER, if I understand you correctly you’re looping through this array and making queries on it. How about posting what you want in terms of query result, as there may be a better solution (i.e. MySQL IN())