Hex To RGB and RGB To Hex

hex_to_rgb_to_hex.php

<?php 
error_reporting(0);
function toHex($N) { 
    if ($N==NULL) return "00"; 
    if ($N==0) return "00"; 
    $N=max(0,$N);  
    $N=min($N,255);  
    $N=round($N); 
    $string = "0123456789ABCDEF"; 
    $val = (($N-$N%16)/16); 
    $s1 = $string{$val}; 
    $val = ($N%16); 
    $s2 = $string{$val}; 
    return $s1.$s2; 
} 
function rgb2hex($r,$g,$b){ 
    return toHex($r).toHex($g).toHex($b); 
} 
function hex2rgb($N){ 
    $dou = str_split($N,2); 
    return array( 
        "R" => hexdec($dou[0]),  
        "G" => hexdec($dou[1]),  
        "B" => hexdec($dou[2]) 
    ); 
} 
echo rgb2hex(106,48,48); 
echo '<p>&nbsp;</p>'; 
print_r(hex2rgb("6A3030")); 
?>