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PHP

Posted by Ahmed AlKharraz
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Ahmed AlKharraz
Front End Web Development Techdegree Graduate 25,735 Points

Explaining "for loop" for the challenge in "Browser Persistent Data with PHP"

Hello :)

Can someone explain this for loop in detail, please. I got the point of " if (!isset($_SESSION['word'][$i])) " but " if ($i == 1) " this one no.

for ($i = 1; $i <= 5; $i++) { if (!isset($_SESSION['word'][$i])) { if ($i == 1) { header('location:play.php'); exit; } else { header('location:play.php?p='.$i); exit; } } }

1 Answer

Steven Parker
Steven Parker
231,236 Points
Steven Parker
Steven Parker
231,236 Points

The loop runs 5 times, and what "($i==1)" does is to test "is this the first one?". If so, it uses the URL alone, but if it's any of the others it adds a query string parameter of "p=<the_number>" onto the end.

You didn't provide a link to the course page, but I'd guess the "p" value is a page number.