php将十六进制颜色值转换为十进制

function hex2rgb( $colour ) {     if ( $colour[0] == '#' ) {         $colour = substr( $colour, 1 );     }     if ( strlen( $colour ) == 6 ) {         list( $r, $g, $b ) = array( $colour[0] . $colour[1], $colour[2] . $colour[3], $colour[4] . $colour[5] );     } elseif ( strlen( $colour ) == 3 ) {         list( $r, $g, $b ) = array( $colour[0] . $colour[0], $colour[1] . $colour[1], $colour[2] . $colour[2] );     } else {         return false;     }     $r = hexdec( $r );     $g = hexdec( $g );     $b = hexdec( $b );     return array( 'red' => $r, 'green' => $g, 'blue' => $b ); } //测试 var_dump(hex2rgb("#eeeeee"));

输出结果为array(3) { ["red"]=> int(238) ["green"]=> int(238) ["blue"]=> int(238) }