Description
Hi
I have a custom field that contains a list of comma separated colors.
I want to randomly select one of those colors.
If get_post_meta returns an array I thought I could randomly pick from that array.
If I try to echo $rand_color_value it just gives me the whole array
How can I randomly select one color from the list in the custom field.
$agrs = array(
'post_type' => 'page',
'tag' => 'colors'
);
$colorLoop = new WP_Query($agrs);
if($colorLoop->have_posts()):
while($colorLoop->have_posts()):
$colorLoop->the_post();
$theColor = get_post_meta($post->ID, 'colors', false);
/*random color*/
$rand_color = array_rand($theColor,1);
$rand_color_value = $theWeight[$rand_color];
echo $rand_color_value;
?>
<?php endwhile; endif;?>
<?php wp_reset_postdata; ?>
Explanation & Answer
OK this is easy. First we parse the string to array. Then we random gerenate a number. Then we use index to choose the position in the array.
$array = explode(",", $yourDatabaseString);
$size = count($array);
$rand = rand(0, $size-1);
$result = $array[$rand];
Review
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