PHP Hex RGB color Value Interchange Example

/** * HEX RGB color Value Interchange * Edit bbs.it-home.org * at 2013/5/11 */ function Hextorgb ($colour) { if ($colour [0] = = ' # ') { $colour = substr ($colour, 1); } if (strlen ($colour) = = 6) { List ($r, $g, $b) = Array ( $colour [0]. $colour [1], $colour [2]. $colour [3], $colour [4]. $colour [5] ); } elseif (strlen ($colour) = = 3) { List ($r, $g, $b) = Array ( $colour [0]. $colour [0], $colour [1]. $colour [1], $colour [2]. $colour [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]{0,3}) \,\s* ([0-9]{0,3}) \,\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; } Invoke Example Echo Implode (",", Hextorgb ("#F7F7DA")). " "; echo Rgbtohex ("RGB (247,247,218)"); ?> Copy Code

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