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PHP color value conversion PHP realizes the conversion of hexadecimal numbers and color values

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Release： 2016-07-25 08:56:13

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/**
* Conversion between color values and hexadecimal numbers
* edit: WWW.JBXUE.COM
*/
function toHex($N) {
if ($N==NULL) return "00";
if ($N ==0) return "00";
$N=max(0,$N);
$N=min($N,255);
$N=round($N);
$string = "0123456789ABCDEF" ;
$val = (($N-$N%16)/16);
$s1 = $string{$val};
$val = ($N%16);
$s2 = $string{$val };
return $s1.$s2;
}
//Convert color value to hexadecimal number
function rgb2hex($r,$g,$b){
return toHex( $r).toHex($g).toHex($b);
}
//Convert hexadecimal numbers to color values
function hex2rgb($N){
$dou = str_split($N,2);
return array(
"R" => hexdec($dou[0]),
"G" => hexdec($dou[1]),
"B" => hexdec($dou[2])
);
}
echo rgb2hex(106,48,48);
echo '

';
print_r(hex2rgb("6A3030"));
?>

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Related labels：

php颜色值转换 php实现16进制数字与颜色值的转换

source：php.cn

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