One small caveat I failed to mention earlier: while ctype_digit will
work fine for parsing the superglobals, if you are instead parsing an
unknown variable that might be an actual integer, a string containing
an integer, or a non-integer string, you'll need to first cast it to
a string before you apply ctype_digit, as that function returns false
if you pass it an actual integer. It's an easy "feature" to forget,
and as I did exactly that myself a few minutes ago I thought I'd
mention it to potentially save you some time in the future.
$string = '42';
$int = 42;
var_dump(ctype_digit($string), ctype_digit((string) $int), ctype_digit
($int));
$page_index = ctype_digit($_GET['page']) ? $_GET['page'] :
$default_page;
Thanks Dann,
I will start using that from now on. Easy to read, works with 0.
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