Profile: J S

add_action('cred_form_ajax_upload_validate', 'toolset_min_img_size_restriction',10,2);
function toolset_min_img_size_restriction($error_fields, $form_data) {
  $forms = array( 123 );
 
  // Field data are field values and errors
  list($fields,$errors)=$error_fields;
  if (in_array($form_data['id'], $forms ) && isset($_FILES['wpcf-single-img']['tmp_name']) ) {
    $target_min_width = 300;
    $target_min_height = 200;
    $check = getimagesize( $_FILES['wpcf-single-img']['tmp_name'] );
 
    if ( $check !== false ) {
        // check the dimensions only, independent of the orientation.
        // if the height is greater than the width, switch the values for comparison.
        $width = ($check[0] >= $check[1]) ? $check[0] : $check[1];
        $height = ($check[1] < $check[0]) ? $check[1] : $check[0];
 
        if ( $width < $target_min_width || $height < $target_min_height ) {
            $errors['single-img'] = __("Image too small", "your-theme-domain");
        }
    }
  }
  $field_data = array($fields,$errors);
  //return result
  return $field_data;
}