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<?php function swift_rgb2hex($rgb,$hash=true) { if($rgb == NULL){ return 'none'; } if($hash) $hex = '#'; $temp = explode('(',$rgb); if(!is_array($temp) || count($temp)<=1){ return $rgb; } $rgb = $temp[1]; $temp = explode(')',$rgb); $rgb = $temp[0]; $rgb = explode(',',$rgb); $hex .= str_pad(dechex($rgb[0]), 2, "0", STR_PAD_LEFT); $hex .= str_pad(dechex($rgb[1]), 2, "0", STR_PAD_LEFT); $hex .= str_pad(dechex($rgb[2]), 2, "0", STR_PAD_LEFT); return $hex; } echo swift_rgb2hex('rgba(0,0,0)'); echo swift_rgb2hex('rgba(255,255,0)'); echo swift_rgb2hex('boom'); echo swift_rgb2hex('FFFFFF'); echo swift_rgb2hex('rgba(0,0,0)');
Output for 4.3.0 - 7.1.0
#000000#ffff00boomFFFFFF#000000