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<?
function rgb2hex($rgb){
if(!is_array($rgb)) {
echo "Error : input must be an array";
return 0;
}
$hex = "";
for($i=0; $i<3; $i++) {
if( ($rgb[$i] > 255) || ($rgb[$i] < 0) ) {
echo "Error : input must be between 0 and 255";
return 0;
}
$tmp = dechex($rgb[$i]);
if(strlen($tmp) < 2) $hex .= "0". $tmp;
else $hex .= $tmp;
}
return $hex;
}
?>
|
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