Question

Here’s what I have

foreach ( $post_formats as $format ) {
    if ( $options['show_post_formats'][$format] == 0 ) {
        $format = 'post-format-' . $format;
        array_push( $hide, $format );
    }
}

and it works fine … but gives me an Undefined index: error when I debug because it wants the value of $format to be in quotes. How would I do this properly?

Answer 1

as your not sure the index will be there you simply use !empty() and check the array key exists.

<?php 
foreach ( $post_formats as $format ) {
    if (!empty($format) && array_key_exists($format, $options['show_post_formats']) && $options['show_post_formats'][$format] == 0 ) {
        $format = 'post-format-' . $format;
        array_push( $hide, $format );
    }
}
?>