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php - Converting a String to an Integer returns 2147483647

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)

However the Integer returned is 2147483647, irrespective of the string input.

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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)

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