RE: Ensuring that variable contains a number

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> How can I ensure that a variable contains a postive integer number?
> I'm currently using this code:
> 
> $number=(10000-$number);
> $number=(10000-$number);
> if ( $number<1 ) { $number=1; }
> 
> But I'm sure that there is a better way. What would that be?


this will check that $input is a positive integer.

if(preg_match("/^\d+$/", $input)) {
	// OK
} else {
	// NOT OK
}

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