后端开发|php教程
CMYK颜色值,RGB颜色
后端开发-php教程
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function hex2rgb($hex) {$color = str_replace(#,\,$hex);$rgb = array( => hexdec(substr($color,0,2)),g => hexdec(substr($color,2,2)), => hexdec(substr($color,4,2)));return $rgb;} // function rgb2cmyk($var1,$g=0,$b=0) {if (is_array($var1)) {$r = $var1[ ];$g = $var1[g];$b = $var1[];} else {$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));
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