Upgrade Error: in_array() expects parameter 2 to be array

  • Resolved noxbane

    (@noxbane)


    11 years, 4 months ago

    I’ve been using this code in some widgets for about a year now with no issues:

    if ( !in_array(39,get_post_ancestors($post)) && !in_array(42,get_post_ancestors($post)) ) return true;

    And also this one:

    global $post; return (in_array(39,get_post_ancestors($post)));

    All it does is display the widget if WordPress is displaying a particular post or one of its children.

    But now I’m suddenly seeing a whole bunch of these errors at the top of every page:

    Warning: in_array() expects parameter 2 to be array, boolean given in /home/besthome/public_html/wp-content/plugins/widget-logic/widget_logic.php(284) : eval()’d code on line 1

    http://wordpress.org/extend/plugins/widget-logic/

Viewing 5 replies - 1 through 5 (of 5 total)
  • alanft

    (@alanft)

    11 years, 4 months ago

    not sure why this would have changed in WP3.5. But the first bit of get_post_ancestors has this

    if ( ! $post ) return false;

    so something you could try is adding an initial test of $post in the condition like

    return ($post) && (in_array(39,get_post_ancestors($post)));

    so that if $post is false it doesn’t go on to test it against the function. just a first thought – not really thought it out.

    Thread Starter noxbane

    (@noxbane)

    11 years, 4 months ago

    Hi Alan,

    Thank you very much for going above and beyond and researching this for us. I wish all plugin authors were so willing to help.

    Your fix worked great for my second example. However it doesn’t for the first.

    Specifically, changing this:

    if ( !in_array(39,get_post_ancestors($post)) && !in_array(42,get_post_ancestors($post)) ) return true;

    to this:

    if ( ($post) && !in_array(39,get_post_ancestors($post)) && !in_array(42,get_post_ancestors($post)) ) return true;

    will get rid of the error, but now that particular widget will never show at all.

    Do you have any idea why this would be?

    alanft

    (@alanft)

    11 years, 4 months ago

    do you have the “global $post” at the start?

    Thread Starter noxbane

    (@noxbane)

    11 years, 4 months ago

    No I didnt, but I added it and it now works:

    global $post; if ( ($post) && !in_array(39,get_post_ancestors($post)) && !in_array(42,get_post_ancestors($post)) ) return true;

    Oddly enough, I never had it before and it worked fine before the 3.5 upgrade. Ah well, I’m just glad it works now. Many thanks.

    cbush57

    (@cbush57)

    10 years, 7 months ago

    This really helped me today too! Just all of a sudden one of my client’s sites broke with this error. I just had to check for the array first:

    $whichPage = get_field(‘which_page?’);
    if( ($whichPage) && in_array(….

    Thanks everyone!!

Viewing 5 replies - 1 through 5 (of 5 total)
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