function the_image_url($return = null)
{
global $post;
$tag = get_post_meta($post->ID, 'image_url', true);
if (!$tag) {
image_setup($post->ID);
$tag = get_post_meta($post->ID, 'image_url', true);
}
if ($return) {
return $tag;
}
/*else*/
echo $tag;
}
function base_color($post)
{
$url = get_post_meta($post->ID, 'image_url', true);
if (!$url) {
image_setup($post->ID);
$url = get_post_meta($post->ID, 'image_url', true);
}
// get the image name
$imgname = trim($url);
if (!$imgname) {
return 'FFFFFF';
}
// create a working image
$im = imagecreatefromjpeg($imgname);
$height = imagesy($im);
$top = $height - 400;
$width = imagesx($im);
// sample five points in the image, based on rule of thirds and center
$rgb = array();
$topy = round($height / 3);
$bottomy = round($height / 3 * 2);
$leftx = round($width / 3);
$rightx = round($width / 3 * 2);
$centery = round($height / 2);
$centerx = round($width / 2);
$rgb[1] = imagecolorat($im, $leftx, $topy);
$rgb[2] = imagecolorat($im, $rightx, $topy);
$rgb[3] = imagecolorat($im, $leftx, $bottomy);
$rgb[4] = imagecolorat($im, $rightx, $bottomy);
$rgb[5] = imagecolorat($im, $centerx, $centery);
// extract each value for r, g, b
$r = array();
$g = array();
$b = array();
$hex = array();
$ct = 0;
$val = 50;
// process points
for ($i = 1; $i <= 5; $i++) {
$r[$i] = $rgb[$i] >> 16 & 0xff;
$g[$i] = $rgb[$i] >> 8 & 0xff;
$b[$i] = $rgb[$i] & 0xff;
// find darkest color
$tmp = $r[$i] + $g[$i] + $b[$i];
if ($tmp < $val) {
$val = $tmp;
$ct = $i;
}
$hex[$i] = rgbhex($r[$i], $g[$i], $b[$i]);
}
return $hex[3];
}