checking for a value in a range

[real_illusions]

Hi all,Probably a pretty straight forward question.Is there a simple comparion operator (or similiar) that can check if a value is between 2 sets. So to check if a variable (always a number) is between 2 and 15 for example.Thanks

[thescientist]

other thanif(x >=2 && x <= 15)

[birbal]

you can use range to create a set of arraythen you can use in_array to check certain value exist or not.

$rset=range(2,15);if(in_array(5,$rset))echo "it is here";else"echo it is not";

you can add any other valuse also like$rset[]=23;

[thescientist]

i suppose you could make an array with the range of numbers as the values, and then you could use in_arrayhttp://php.net/manual/en/function.in-array.php

[real_illusions]

other thanif(x >=2 && x <= 15)

Pretty basic, but its easy enough to work with. Probably end up been crude and horrible code, but if it works, then it'll do for now.Thanks

[boen_robot]

You can do a sort of minor optimization if you swap your if/else branches, and use || instead, like:

if ($x < 2 || $x > 15) {//if the number is NOT in the range}else {//if the number IS in the range}

This only works in that scenario though (you're trading three constant operators for two best, three worst)... if you're to keep your branches as with the &&, you need to use "!" over the whole thing, at which point the minor optimization is lost (you're trading three constant operators for another three operators best, four operators worst).