将CMYK颜色值和RGB颜色相互转换的PHP代码

时间：2020-07-20 15:06 来源/作者：php代码网

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									function hex2rgb($hex) {

									$color = str_replace('#','',$hex);

									$rgb = array('r' => hexdec(substr($color,0,2)),

									'g' => hexdec(substr($color,2,2)),

									'b' => hexdec(substr($color,4,2)));

									return $rgb;

									} // www.zzvips.com

									function rgb2cmyk($var1,$g=0,$b=0) {

									if (is_array($var1)) {

									$r = $var1['r'];

									$g = $var1['g'];

									$b = $var1['b'];

									} else {

									$r=$var1;

									}

									$cyan = 255 - $r;

									$magenta = 255 - $g;

									$yellow = 255 - $b;

									$black = min($cyan, $magenta, $yellow);

									$cyan = @(($cyan - $black) / (255 - $black)) * 255;

									$magenta = @(($magenta - $black) / (255 - $black)) * 255;

									$yellow = @(($yellow - $black) / (255 - $black)) * 255;

									return array('c' => $cyan / 255,

									'm' => $magenta / 255,

									'y' => $yellow / 255,

									'k' => $black / 255);

									}

									$color=rgb2cmyk(hex2rgb('#FF0000'));

将CMYK颜色值和RGB颜色相互转换的PHP代码

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