RGB HEX #FF0000 to RGB 255 ( 255, 0, 0 ) in PHP

hex-to-rgba.php

<?php
/**
 * Convert RGB HEX to RGB 255 in PHP
 */

function hex_to_rgb ( $color_code ) {
	
	$hex_string = str_replace( '#', '', $color_code );

	$hex = [
		'r' => substr( $hex_string, 0, 2 ),
		'g' => substr( $hex_string, 2, 2 ),
		'b' => substr( $hex_string, 4, 2 )
	];

	$rgb = [
		hexdec( $hex['r'] ),
		hexdec( $hex['g'] ),
		hexdec( $hex['b'] )
	];

	$rgb_string = implode( ', ', $rgb );

	return $rgb_string;

}

echo hex_to_rgb( '#ff0000' );