Unable to get specific value from post meta

Question

I am using get_post_meta() to retrieve a custom meta field value from a given post.

The custom meta box has a parent checkbox which has 3 child checkboxes. I want to get the values of both parent and child.

• Parent checkbox Enable Protection for this post

• Child checkboxes: (a) Level 1 (b) Level 2 (c) Level 3

here is the screenshot of the metabox. https://www.screencast.com/t/7fA19sCoe2yD

The code I am using is:

$meta = get_post_meta( '8142', '_key_value', true );
foreach( $meta as $m ){
  echo $m['protect']; 
  echo $m['selectedlevels'];
}

But it only echo the $m['protect'] which is also the parent checkbox. How can I output its child checkboxes too?

if I var_dump, it returns the following value:

array(2) { ["protect"]=> bool(true) ["selectedlevels"]=> array(1) { [0]=> int(2) } }

Any help would be highly appreciated.

thanks in advance :)

Answer 1

Based on your var_dump() I can only assume the checked values are in the selecteclevels array which you can get by looping through the array:

foreach( $meta['selectedlevels'] as $level ) {
    echo $level;
}

Or using array indices: echo $meta['selectedlevels'][0]. Note, get_post_meta() may return nothing, and you should check if the selectedlevels index even exists your returned variable.