Check the value of a sub field, outside the while loop. #wordpress #acf

check-subfield-exists.php

$found = false;
$value = 'Your value';
while ( have_rows( 'your_repeater_field' ) ) : the_row();
     if ( get_sub_field( 'your_sub_field' ) == $value ) :
          $found = true;
     endif;
endwhile;

if ( $found ) {
     // True
} else {
     // False
}