Online PHP editor | output for 1iUh1

<?php /** * Parses an RGBA string and returns and array with each color * @param string $str The RGBA string, ex: "rgba(66, 66, 66, 1)" * @return array Returns an array with each r, g, b and a value or false if an invalid string is passed in. */ function parseRGBA($str){ //match the rgba string and get it's part if(preg_match('/rgba$ *([\d\.-]+), *([\d\.-]+), *([\d\.-]+), *([\d\.-]+) *$/i', $str, $m)){ $out = array( 'r'=>intval($m[1]), //get the red 'g'=>intval($m[2]), //get the green 'b'=>intval($m[3]), //get the blue 'a'=>round(floatval($m[4]) * 255), //get the alpha and scale to 0-255 ); //clamp each value between 0 and 255 array_walk($out, function(&$v){ $v = min(255, max(0, $v)); }); return $out; } return false; } echo '<pre>'; echo "Normal value: "; print_r(parseRGBA("rgba(66, 66, 66, 1)")); echo "Red > 255: "; print_r(parseRGBA("rgba(660, 66, 66, 1)")); echo "Green < 0: "; print_r(parseRGBA("rgba(66, -66, 66, 1)")); echo "Alpha float (normal): "; print_r(parseRGBA("rgba(66, 66, 66, 0.6)")); echo "Alpha overflow: "; print_r(parseRGBA("rgba(66, 66, 66, 10)"));