my_acf_admin_head errors

• robertrhu

• September 8, 2016 at 12:40 pm

I’ve implemented my_acf_admin_head in order to give users the ability to add a global background image to the website. I’ve added the codebelow to my functions.php.

I have wp-config in debug mode. It is kicking a bunch of warning errors when I log in or out of wordpress.

Here is the error log…

Warning: Cannot modify header information - headers already sent by (output started at /Users/robertrhu/Documents/Websites/vail/wp-content/themes/thisisepic/library/user-styles.php:2) in /Users/robertrhu/Documents/Websites/vail/wp-login.php on line 402

Warning: Cannot modify header information - headers already sent by (output started at /Users/robertrhu/Documents/Websites/vail/wp-content/themes/thisisepic/library/user-styles.php:2) in /Users/robertrhu/Documents/Websites/vail/wp-login.php on line 415

Warning: Cannot modify header information - headers already sent by (output started at /Users/robertrhu/Documents/Websites/vail/wp-content/themes/thisisepic/library/user-styles.php:2) in /Users/robertrhu/Documents/Websites/vail/wp-includes/pluggable.php on line 914

Warning: Cannot modify header information - headers already sent by (output started at /Users/robertrhu/Documents/Websites/vail/wp-content/themes/thisisepic/library/user-styles.php:2) in /Users/robertrhu/Documents/Websites/vail/wp-includes/pluggable.php on line 915

Warning: Cannot modify header information - headers already sent by (output started at /Users/robertrhu/Documents/Websites/vail/wp-content/themes/thisisepic/library/user-styles.php:2) in /Users/robertrhu/Documents/Websites/vail/wp-includes/pluggable.php on line 916

Warning: Cannot modify header information - headers already sent by (output started at /Users/robertrhu/Documents/Websites/vail/wp-content/themes/thisisepic/library/user-styles.php:2) in /Users/robertrhu/Documents/Websites/vail/wp-includes/pluggable.php on line 917

Warning: Cannot modify header information - headers already sent by (output started at /Users/robertrhu/Documents/Websites/vail/wp-content/themes/thisisepic/library/user-styles.php:2) in /Users/robertrhu/Documents/Websites/vail/wp-includes/pluggable.php on line 918

Warning: Cannot modify header information - headers already sent by (output started at /Users/robertrhu/Documents/Websites/vail/wp-content/themes/thisisepic/library/user-styles.php:2) in /Users/robertrhu/Documents/Websites/vail/wp-includes/pluggable.php on line 919

Warning: Cannot modify header information - headers already sent by (output started at /Users/robertrhu/Documents/Websites/vail/wp-content/themes/thisisepic/library/user-styles.php:2) in /Users/robertrhu/Documents/Websites/vail/wp-includes/pluggable.php on line 922

Warning: Cannot modify header information - headers already sent by (output started at /Users/robertrhu/Documents/Websites/vail/wp-content/themes/thisisepic/library/user-styles.php:2) in /Users/robertrhu/Documents/Websites/vail/wp-includes/pluggable.php on line 923

Warning: Cannot modify header information - headers already sent by (output started at /Users/robertrhu/Documents/Websites/vail/wp-content/themes/thisisepic/library/user-styles.php:2) in /Users/robertrhu/Documents/Websites/vail/wp-includes/pluggable.php on line 924

Warning: Cannot modify header information - headers already sent by (output started at /Users/robertrhu/Documents/Websites/vail/wp-content/themes/thisisepic/library/user-styles.php:2) in /Users/robertrhu/Documents/Websites/vail/wp-includes/pluggable.php on line 925

Warning: Cannot modify header information - headers already sent by (output started at /Users/robertrhu/Documents/Websites/vail/wp-content/themes/thisisepic/library/user-styles.php:2) in /Users/robertrhu/Documents/Websites/vail/wp-includes/pluggable.php on line 928

Warning: Cannot modify header information - headers already sent by (output started at /Users/robertrhu/Documents/Websites/vail/wp-content/themes/thisisepic/library/user-styles.php:2) in /Users/robertrhu/Documents/Websites/vail/wp-includes/pluggable.php on line 929

Warning: Cannot modify header information - headers already sent by (output started at /Users/robertrhu/Documents/Websites/vail/wp-content/themes/thisisepic/library/user-styles.php:2) in /Users/robertrhu/Documents/Websites/vail/wp-includes/pluggable.php on line 930

Warning: Cannot modify header information - headers already sent by (output started at /Users/robertrhu/Documents/Websites/vail/wp-content/themes/thisisepic/library/user-styles.php:2) in /Users/robertrhu/Documents/Websites/vail/wp-includes/pluggable.php on line 931

Warning: Cannot modify header information - headers already sent by (output started at /Users/robertrhu/Documents/Websites/vail/wp-content/themes/thisisepic/library/user-styles.php:2) in /Users/robertrhu/Documents/Websites/vail/wp-includes/pluggable.php on line 1174

Here is the code

<!--USER INPUT STYLES FUNCTION-->
    <?php function my_acf_admin_head() {
    
        $backgroundimage = get_field('background_image', 'option');
    
        ?>
        <!--BEGIN USER INPUT STYLES-->
        <style type="text/css">
            
            /**Adds custom global background image**/
            .main-content {
                background-image: url(<?php echo $backgroundimage; ?>);
            }
            
        </style>
        <?php
    }
    add_action('wp_head', 'my_acf_admin_head');
    ?>
    <!--END USER INPUT STYLES-->

• robertrhu

• September 8, 2016 at 12:47 pm

Figures it out. It was the spaces in my_acf_admin_head. Cleaned it up like this…

<?php function my_acf_admin_head() {
    $backgroundimage = get_field('background_image', 'option'); ?>
    <!--BEGIN USER INPUT STYLES-->
    <style type="text/css">
        /**Adds custom global background image**/
        .main-content {
            background-image: url(<?php echo $backgroundimage; ?>);
        }
    </style>
<?php } add_action('wp_head', 'my_acf_admin_head'); ?>