RE: [PHP] is_numeric for php3

At 03:41 PM 8/28/01 , scott [gts] wrote:

my understanding is that numeric is a broad term for number values (any value with only numbers and a decimal point) like 1, 5.6, 332, 0.5532, for example. integers are a sub-set of numerics, so any integer is a numeric value, but any numeric value is not necessarily an integer. $num=123 is an integer *and* numeric value. $num='123' might not be an integer, but it is a numeric. now the problem of how to devise a proper test for numeric values (without using regexps) is what i'd like to see.

function is_numeric($Something) { return (string)(1.0*$Something) == $Something; } should work.

        -steve

+------------------------------------------------------------------------+

| Steve Edberg                           University of California, Davis |
| sbedberg@ucdavis.edu                                     (530)754-9127 |
| http://aesric.ucdavis.edu/                  http://pgfsun.ucdavis.edu/ |

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