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edited Apr 13, 2017 at 12:37

That value is set on a per user basis and saved as user meta. We can intercept and modify it to a fixed value using the filter get_{$meta_type}_metadata.

Create a Must Use plugin and it will be active in all the Network:

add_filter( 'get_user_metadata', 'comments_per_page_wpse_95420', 10, 4 );

function comments_per_page_wpse_95420( $check, $object_id, $meta_key, $single )
{ 
    if( 'edit_comments_per_page' == $meta_key )
        return 999;

    return $check;
}

That value is set on a per user basis and saved as user meta. We can intercept and modify it to a fixed value using the filter get_{$meta_type}_metadata.

Create a Must Use plugin and it will be active in all the Network:

add_filter( 'get_user_metadata', 'comments_per_page_wpse_95420', 10, 4 );

function comments_per_page_wpse_95420( $check, $object_id, $meta_key, $single )
{ 
    if( 'edit_comments_per_page' == $meta_key )
        return 999;

    return $check;
}

That value is set on a per user basis and saved as user meta. We can intercept and modify it to a fixed value using the filter get_{$meta_type}_metadata.

Create a Must Use plugin and it will be active in all the Network:

add_filter( 'get_user_metadata', 'comments_per_page_wpse_95420', 10, 4 );

function comments_per_page_wpse_95420( $check, $object_id, $meta_key, $single )
{ 
    if( 'edit_comments_per_page' == $meta_key )
        return 999;

    return $check;
}

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created Apr 11, 2013 at 16:52

brasofilo

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That value is set on a per user basis and saved as user meta. We can intercept and modify it to a fixed value using the filter get_{$meta_type}_metadata.

Create a Must Use plugin and it will be active in all the Network:

add_filter( 'get_user_metadata', 'comments_per_page_wpse_95420', 10, 4 );

function comments_per_page_wpse_95420( $check, $object_id, $meta_key, $single )
{ 
    if( 'edit_comments_per_page' == $meta_key )
        return 999;

    return $check;
}