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- function diapazon ($r){
- if ($r <= 0) {
- $r = 0;
- }
- elseif ($r >= 255) {
- $r = 255;
- }
- $r = strtoupper(dechex($r));
- if ((strlen ($r)<2)) {
- $r = (str_pad((0), 2, $r, STR_PAD_LEFT));
- }
- return $r;
- }
- function rgb($r, $g, $b){
- $r = diapazon ($r);
- $g = diapazon ($g);
- $b = diapazon ($b);
- $s = $r.$g.$b;
- return $s;
- }
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