Convert hex color to RGB values in PHP

If you want to convert hex to rgb you can use sscanf:

<?php$hex = "#ff9900";list($r, $g, $b) = sscanf($hex, "#%02x%02x%02x");echo "$hex -> $r $g $b";?>

Output:

#ff9900 -> 255 153 0

Check out PHP's hexdec() and dechex() functions:http://php.net/manual/en/function.hexdec.php

Example:

$value = hexdec('ff'); // $value = 255

I made a function which also returns alpha if alpha is provided as a second parameter the code is below.

The function

function hexToRgb($hex, $alpha = false) {   $hex      = str_replace('#', '', $hex);   $length   = strlen($hex);   $rgb['r'] = hexdec($length == 6 ? substr($hex, 0, 2) : ($length == 3 ? str_repeat(substr($hex, 0, 1), 2) : 0));   $rgb['g'] = hexdec($length == 6 ? substr($hex, 2, 2) : ($length == 3 ? str_repeat(substr($hex, 1, 1), 2) : 0));   $rgb['b'] = hexdec($length == 6 ? substr($hex, 4, 2) : ($length == 3 ? str_repeat(substr($hex, 2, 1), 2) : 0));   if ( $alpha ) {      $rgb['a'] = $alpha;   }   return $rgb;}

Example of function responses

print_r(hexToRgb('#19b698'));Array (   [r] => 25   [g] => 182   [b] => 152)print_r(hexToRgb('19b698'));Array (   [r] => 25   [g] => 182   [b] => 152)print_r(hexToRgb('#19b698', 1));Array (   [r] => 25   [g] => 182   [b] => 152   [a] => 1)print_r(hexToRgb('#fff'));Array (   [r] => 255   [g] => 255   [b] => 255)

If you'd like to return the rgb(a) in CSS format just replace the return $rgb; line in the function with return implode(array_keys($rgb)) . '(' . implode(', ', $rgb) . ')';