Use of php Hex RGB color value Interchange

Copy codeThe Code is as follows: <? Php
Echo implode (",", HexToRGB ("# F7F7DA"). "<br/> ";
Echo RGBToHex ("rgb (247,247,218)")?>
<? Php

Function HexToRGB ($ color ){
If ($ color [0] = '#'){
$ Color = substr ($ color, 1 );
}
If (strlen ($ color) = 6 ){
List ($ r, $ g, $ B) = array (
$ Color [0]. $ color [1],
$ Color [2]. $ color [3],
$ Color [4]. $ color [5]
);
} Elseif (strlen ($ color) = 3 ){
List ($ r, $ g, $ B) = array (
$ Color [0]. $ color [0],
$ Color [1]. $ color [1],
$ Color [2]. $ color [2]
);
} Else {
Return false;
}
$ R = hexdec ($ r );
$ G = hexdec ($ g );
$ B = hexdec ($ B );
Return array (
'Red' => $ r,
'Green' => $ g,
'Blue' => $ B
);
}
Function RGBToHex ($ rgb ){
$ Regexp = "/^ rgb \ ([0-9] {}) \, \ s * ([0-9 })\, \ s * ([0-9] {0, 3 })\)/";
$ Re = preg_match ($ regexp, $ rgb, $ match );
$ Re = array_shift ($ match );
$ HexColor = "#";
$ Hex = array (
'0 ',
'1 ',
'2 ',
'3 ',
'4 ',
'5 ',
'6 ',
'7 ',
'8 ',
'9 ',
'A ',
'B ',
'C ',
'D ',
'E ',
'F'
);
For ($ I = 0; $ I <3; $ I ++ ){
$ R = null;
$ C = $ match [$ I];
$ HexAr = array ();

While ($ c> 16 ){
$ R = $ c % 16;
$ C = ($ c/16)> 0;
Array_push ($ hexAr, $ hex [$ r]);
}
Array_push ($ hexAr, $ hex [$ c]);

$ Ret = array_reverse ($ hexAr );
$ Item = implode ('', $ ret );
$ Item = str_pad ($ item, 2, '0', STR_PAD_LEFT );
$ HexColor. = $ item;
}
Return $ hexColor;
}
?>