[Resolved] Uncaught TypeError: in_array(): Argument #2 ($haystack) must be of type array

[vast]

When checking if the current user is logged in for example, the filter “generate_typography_default_fonts” produces the following below.

// Set localized custom fonts
function rk_typography_fonts( $fonts ) {
if ( is_user_logged_in() ) {
        $fonts[] = 'Pacifico';
        return $fonts;
    }
}
add_filter( 'generate_typography_default_fonts', 'rk_typography_fonts' );

Uncaught TypeError: in_array(): Argument #2 ($haystack) must be of type array, 
 null given in 
 /wp-content/themes/generatepress/inc/typography.php:844 
 Stack trace: 
 #0 
 /wp-content/themes/generatepress/inc/typography.php(844): 
 in_array('System Stack', NULL) 
 #1 
 /wp-content/themes/generatepress/inc/typography.php(64): 
 generate_get_google_font_variants('System Stack', 'font_body') 
 #2 
 /wp-includes/class-wp-hook.php(303): generate_enqueue_google_fonts('') 
 #3 
 /wp-includes/class-wp-hook.php(327): 
 WP_Hook->apply_filters('', Array) 
 #4 
 /wp-includes/plugin.php(470): 
 WP_Hook->do_action(Array) 
 #5
 /wp-includes/script-loader.php(2083): 
 do_action('wp_enqueue_scri...') 
 #6 
 /wp-includes/class-wp-hook.php(303): 
 wp_enqueue_scripts('') 
 #7 
 /wp-includes/class-wp-hook.php(327): 
 WP_Hook->apply_filters(NULL, Array) 
 #8 
 /wp-includes/plugin.php(470): 
 WP_Hook->do_action(Array) 
 #9 
 /wp-includes/general-template.php(3015): 
 do_action('wp_head') 
 #10 
 /wp-content/themes/generatepress/header.php(17): 
 wp_head() 
 #11 
 /wp-includes/template.php(770): 
 require_once('/home/rk...') 
 #12 
 /wp-includes/template.php(716): 
 load_template('/home/rk...', true, Array) 
 #13 
 /wp-includes/general-template.php(48): 
 locate_template(Array, true, true, Array) 
 #14 
 /wp-content/themes/generatepress/index.php(18): 
 get_header() #15 /wp-includes/template-loader.php(106): 
 include('/home/rk...') 
 #16 
 /wp-blog-header.php(19): 
 require_once('/home/rk...') 
 #17 /index.php(17): require('/home/rk...') 
 #18 {main} thrown in

[Elvin]

Hi there,

Can you share w/ us where you’re getting this error?

Also, is there any particular reason for adding the condition if ( is_user_logged_in() )? It seems completely unnecessary as the typography settings is automatically assumed for logged in users as it’s a backend thing to set.

[vast]

Hi Elvin,

It occurs in the WordPress backend. The condition is_user_logged_in() is an example of the error occurring with WordPress’ native function.

This will be replaced with other custom conditional functions. The test with WordPress’ native function was to rule out issues with the custom function.

[Tom]

You need to return outside of the condition:

// Set localized custom fonts
function rk_typography_fonts( $fonts ) {
    if ( is_user_logged_in() ) {
        $fonts[] = 'Pacifico';
    }

    return $fonts;
}
add_filter( 'generate_typography_default_fonts', 'rk_typography_fonts' );

Hope this helps!

[vast]

Thanks Tom.

[Tom]

No problem!

[Author]

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