Using array_unique with repeater fields to remove duplicate @font-face requests

• MattCampbell95

• December 7, 2022 at 5:59 am

I’m using PHP to parse the below code into a CSS file which is working perfectly, but I’m hoping to remove any duplicates as and when they appear in order to cut down on unnecessary code:

if( have_rows('global_typography', 'option') ):
    while( have_rows('global_typography', 'option') ) : the_row();  
        if( get_sub_field('global_custom_font_file') ):
            print '@font-face {' . PHP_EOL;
            print 'font-family: '; the_sub_field('global_custom_font_family_name'); print ';' . PHP_EOL;
            print 'src: url('; the_sub_field('global_custom_font_file'); print ');' . PHP_EOL;
            print 'font-weight: normal;' . PHP_EOL;
            print '}' . PHP_EOL  . PHP_EOL;
        endif;
    endwhile;
endif;

I found this article which seems to cover what I’m after, but I’m really struggling to get this working. Here’s my interpretation of this code based on the original code above:

if (have_rows('global_typography', 'option')):
    while (have_rows('global_typography', 'option')) : the_row(); 
    $custom_font_file = get_sub_field('global_custom_font_family_name');
    $results = array_unique($custom_font_file);  
        foreach ($results as $result) 
            print '@font-face {' . PHP_EOL;
            print 'font-family: '; the_sub_field('global_custom_font_family_name'); print ';' . PHP_EOL;
            print 'src: url('; the_sub_field('global_custom_font_file'); print ');' . PHP_EOL;
            print 'font-weight: normal;' . PHP_EOL;
            print '}' . PHP_EOL  . PHP_EOL; 
    endwhile;
endif;

Here’s also a screenshot of the ACF field group in question:

Is anybody able to offer any advice or point me in the right direction? Your help is much appreciated!

• MattCampbell95

• December 8, 2022 at 3:13 pm

I managed to solve this myself. According to this post, it looks as though array_unique doesn’t work with sub_field text strings on ACF. Instead, using an if !in_array command worked fine, as seen in the below example:

if( have_rows('global_typography', 'option') ):
    while( have_rows('global_typography', 'option') ) : the_row();          
        // display your sub fields
        $custom_font_file = get_sub_field('global_custom_font_file');
        // compare current value in saved array
        if( !in_array( $custom_font_file, $PreValue ) )
            {
            print '@font-face {' . PHP_EOL;
            print 'font-family: '; the_sub_field('global_custom_font_family_name'); print ';' . PHP_EOL;
            print "src: url('"; the_sub_field('global_custom_font_file'); print "');" . PHP_EOL;
            print 'font-weight: normal;' . PHP_EOL;
            print '}' . PHP_EOL  . PHP_EOL;
            }
        // save value in array
        $PreValue[] = $custom_font_file;
    endwhile;
endif;