Title: Conditional Logic: contains array throwing fatal error
Last modified: August 31, 2016

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# Conditional Logic: contains array throwing fatal error

 *  [tango3](https://wordpress.org/support/users/tango3/)
 * (@tango3)
 * [10 years, 2 months ago](https://wordpress.org/support/topic/conditional-logic-contains-array-throwing-fatal-error/)
 * Just been looking at the documentation on Conditional Logic in the ‘contains’
   section, I’m trying to add a array of values for a set of checkbox fields, so
   the field is visible is any of the ids are set(via a checkbox)
    the documentation
   says use the following: `'visible' => array('brand', 'contains', ['Apple'])`
 * but it throws a fatal error when I use the following:
 *     ```
       $meta_boxes[] = array(
       		'id'         => 'he_subtitle',
       		'title'      => __( 'HE Sub-Title', 'he_subtitle' ),
                       'post_types' => 'courses',
       		'priority'   => 'low',
       		'autosave'   => true,
                       'context'    => 'side',
                       'visible' => array('course_type_select', 'contains', ['32','35']),
   
       		'fields'     => array(
       			// Course reference code
       			array(
       				'name'  => __( '' ),
       				'id'    => "{$prefix}he_subtitle",
       				'desc'  => __( 'HE sub-title (Year of entry)' ),
       				'type'  => 'text',
       			),
               ),
           );
       ```
   
 * I also tried array() instead of [] which sorts the error but still doesn’t work,
   the only way i can get to to work is to use a single ID value.
 * [https://wordpress.org/plugins/meta-box/](https://wordpress.org/plugins/meta-box/)

Viewing 1 replies (of 1 total)

 *  Plugin Contributor [Tan Nguyen](https://wordpress.org/support/users/tanng/)
 * (@tanng)
 * [10 years, 2 months ago](https://wordpress.org/support/topic/conditional-logic-contains-array-throwing-fatal-error/#post-7124610)
 * Hi bro,
 * The `contains` operator is for single value, it return true when your field contains
   a value, in case your field is an array, it will works if your array contains
   your value. If your field is string, it will works if your string contains your
   value
 * For example:
 * [‘a’, ‘b’] contains ‘a’ but not contains ‘c’
    ‘hello world!’ contains ‘hello’
   but not contains ‘foo’
 * In your case, to check if a field is one of those values, use `in` instead
 * array(‘course_type_select’, ‘in’, [32, 35])
 * Btw, square brackets only available for PHP >= 5.4
 * Regards

Viewing 1 replies (of 1 total)

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## Tags

 * [conditional logic](https://wordpress.org/support/topic-tag/conditional-logic/)
 * [contains](https://wordpress.org/support/topic-tag/contains/)
 * [fatal error](https://wordpress.org/support/topic-tag/fatal-error/)

 * 1 reply
 * 2 participants
 * Last reply from: [Tan Nguyen](https://wordpress.org/support/users/tanng/)
 * Last activity: [10 years, 2 months ago](https://wordpress.org/support/topic/conditional-logic-contains-array-throwing-fatal-error/#post-7124610)
 * Status: not resolved