hello am trying to check if there's a url to the custom post type inside default post type page so i used

echo 'true';
echo 'false';

it's always echo true even if the $customID not exists is there's way to do that with get_the_permalink(); function and i know about get_post_status() but i need to do it with get_the_permalink

  • '$customID' is a string, have you tried $customID? – Milo Jun 2 '17 at 15:14
  • thanks milo i just update my question i typed it wrongly – Mouner Mostafa Jun 2 '17 at 15:18
  • How are you getting $customID? – czerspalace Jun 2 '17 at 16:21
  • Either your problem is elsewhere or you need to add more detail to this question. get_the_permalink definitely returns false if the post ID passed to it doesn't exist. – Andrew Dinmore Jun 2 '17 at 16:25
  • am using it inside loop so if $customID value is empty the function get the default post url so it's alway return true – Mouner Mostafa Jun 4 '17 at 23:54

You just need to check if $customID is set, first. E.g.

if ($customID && get_permalink ($customID)) {
    echo 'true';
} else {
    echo 'false';
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