Plenty of others seem to have had this problem, but usually associated with an MySQL datatype.
I'm trying to convert a String to an Integer like this:
$adGroupId = '5947939396';
$adGroupId = intval($adGroupId)
That number is too big to fit in an integer data type (the max integer value is 2147483647 as seen above). Converting it to a float instead will work:
$adGroupId = '5947939396'; $adGroupId = floatval($adGroupId)