php颜色转换函数hex-rgb(将十六进制格式转成十进制格式)

复制代码 代码如下:

  <?php

  function hex2rgb($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 );

  }

  $b = hex2rgb ( "#ff0" );

  print_r ( $b );

  ?>