fix: compatibility with lower PHP versions

load.php

@@ -21,18 +21,15 @@
 global $themeisle_sdk_max_path;
 
 // If this is the latest SDK and it comes from a theme, we should load licenser separately.
-$licenser_path = '/src/Modules/Licenser.php';
+$themeisle_sdk_relative_licenser_path = '/src/Modules/Licenser.php';
 
-if ( ! file_exists( $themeisle_sdk_path . $licenser_path ) && file_exists( $themeisle_sdk_max_path . $licenser_path ) ) {
-	add_filter( 'themeisle_sdk_required_files', function ( $to_load ) use ( $themeisle_sdk_max_path, $licenser_path ) {
-		$to_load[] = $themeisle_sdk_max_path . $licenser_path;
-
-		return $to_load;
-	} );
+global $themeisle_sdk_abs_licenser_path;
+if ( ! file_exists( $themeisle_sdk_path . $themeisle_sdk_relative_licenser_path ) && file_exists( $themeisle_sdk_max_path . $themeisle_sdk_relative_licenser_path ) ) {
+	$themeisle_sdk_abs_licenser_path = $themeisle_sdk_max_path . $themeisle_sdk_relative_licenser_path;
+	add_filter( 'themeisle_sdk_required_files', 'themeisle_sdk_load_licenser_if_present' );
 }
-
 if ( version_compare( $themeisle_sdk_version, $themeisle_sdk_max_path ) == 0 &&
-		apply_filters( 'themeisle_sdk_should_overwrite_path', false, $themeisle_sdk_path, $themeisle_sdk_max_path ) ) {
+	apply_filters( 'themeisle_sdk_should_overwrite_path', false, $themeisle_sdk_path, $themeisle_sdk_max_path ) ) {
 	$themeisle_sdk_max_path = $themeisle_sdk_path;
 }
 
@@ -41,6 +38,19 @@
 	$themeisle_sdk_max_path    = $themeisle_sdk_path;
 }
 
+// load the latest sdk version from the active Themeisle products.
+if ( ! function_exists( 'themeisle_sdk_load_licenser_if_present' ) ) :
+	/**
+	 * Always load the licenser, if present.
+	 */
+	function themeisle_sdk_load_licenser_if_present() {
+		global $themeisle_sdk_abs_licenser_path;
+		$to_load[] = $themeisle_sdk_abs_licenser_path;
+
+		return $to_load;
+	}
+endif;
+
 // load the latest sdk version from the active Themeisle products.
 if ( ! function_exists( 'themeisle_sdk_load_latest' ) ) :
 	/**