Patch to reduce disk access

Every time the plugin renders a form, it will re-create the empty index.php to protect folders from being browsed. Even if the index.php already exists. This heavily increase disk write for no reason, negatively impacting the server performance.

Here is a patch that centralize the check whether index.php should be created inside the concerned method \Forminator_Field::add_index_file(). So, that method can be called without repeating the fragile, and broken, check before calling it.

diff -ur a/library/abstracts/abstract-class-field.php b/library/abstracts/abstract-class-field.php
--- library/abstracts/abstract-class-field.php	2026-01-20 11:31:24.000000000 +0900
+++ library/abstracts/abstract-class-field.php	2026-03-20 16:29:23.815566745 +0900
@@ -2227,7 +2227,7 @@
 			return;
 		}
 		// Make sure it was not called before WP init.
-		if ( ! file_exists( $upload_root . 'index.php' ) && function_exists( 'insert_with_markers' ) ) {
+		if ( function_exists( 'insert_with_markers' ) ) {
 			self::add_index_file( $upload_root );
 			self::add_htaccess_file();
 		}
@@ -2241,8 +2241,9 @@
 	 * @return void
 	 */
 	public static function add_index_file( $dir ) {
-		$dir = untrailingslashit( $dir );
-		if ( ! is_dir( $dir ) || ! wp_is_writable( $dir ) || is_link( $dir ) ) {
+		$dir = untrailingslashit( $dir );
+		$index_file_path = $dir . '/index.php';
+		if ( is_file( $index_file_path ) || ! is_dir( $dir ) || ! wp_is_writable( $dir ) || is_link( $dir ) ) {
 			return;
 		}
 		$dp = opendir( $dir );
@@ -2256,7 +2257,6 @@
 
 		global $wp_filesystem;
 		if ( WP_Filesystem() ) {
-			$index_file_path = $dir . '/index.php';
 			// creates an empty index.php file.
 			$wp_filesystem->put_contents( $index_file_path, '', FS_CHMOD_FILE );
 		}
@@ -2289,12 +2289,8 @@
 		}
 
 		self::check_upload_root_index_file();
-		if ( ! file_exists( forminator_get_upload_path( $form_id ) . 'index.php' ) ) {
-			self::add_index_file( forminator_get_upload_path( $form_id ) );
-		}
-		if ( ! file_exists( $path . 'index.php' ) ) {
-			self::add_index_file( $path );
-		}
+		self::add_index_file( forminator_get_upload_path( $form_id ) );
+		self::add_index_file( $path );
 	}
 
 	/**
diff -ur a/forminator/library/class-form-fields.php b/library/class-form-fields.php
--- forminator/library/class-form-fields.php	2025-10-20 10:50:06.000000000 +0900
+++ library/class-form-fields.php	2026-03-20 16:27:42.102583525 +0900
@@ -212,11 +212,7 @@
 
 		Forminator_Field::check_upload_root_index_file();
 
-		if ( ! file_exists( $upload_root . 'css/index.php' ) ) {
-			Forminator_Field::add_index_file( $upload_root . 'css/index.php' );
-		}
-		if ( ! file_exists( $upload_root . 'signatures/index.php' ) ) {
-			Forminator_Field::add_index_file( $upload_root . 'signatures/index.php' );
-		}
+		Forminator_Field::add_index_file( $upload_root . 'css' );
+		Forminator_Field::add_index_file( $upload_root . 'signatures' );
 	}
 }