Fix: php warnings and deprecations

Author: rhell4

classes/editor_ajax.php

@@ -65,7 +65,8 @@ public function getLatestLibraryVersions() {
 
         return $DB->get_records_sql("
             SELECT hl4.id, hl4.machine_name, hl4.title, hl4.major_version,
-                hl4.minor_version, hl4.patch_version, hl4.has_icon, hl4.restricted
+                hl4.minor_version, hl4.patch_version, hl4.has_icon, hl4.restricted,
+                0 AS patch_version_in_folder_name
             FROM {hvp_libraries} hl4
             JOIN ({$maxminorversionsql}) hl3
             ON hl4.machine_name = hl3.machine_name

classes/file_storage.php

@@ -544,6 +544,7 @@ private static function readFileTree($source, $options, $archive = null, $relati
         if (empty($archive) && $exportzip) {
             $archive = new \ZipArchive();
             $path = tempnam(get_request_storage_directory(),'libdir');
+            unlink($path);
             $archive->open($path, \ZipArchive::CREATE || \ZipArchive::OVERWRITE);
             // Set recursion flag.
             $top = true;

classes/framework.php

@@ -1521,23 +1521,27 @@ public function loadLibrary($machinename, $majorversion, $minorversion) {
             'minor_version' => $minorversion
         ));
 
-        $librarydata = array(
-            'libraryId' => $library->id,
-            'machineName' => $library->machine_name,
-            'title' => $library->title,
-            'majorVersion' => $library->major_version,
-            'minorVersion' => $library->minor_version,
-            'patchVersion' => $library->patch_version,
-            'embedTypes' => $library->embed_types,
-            'preloadedJs' => $library->preloaded_js,
-            'preloadedCss' => $library->preloaded_css,
-            'dropLibraryCss' => $library->drop_library_css,
-            'fullscreen' => $library->fullscreen,
-            'runnable' => $library->runnable,
-            'semantics' => $library->semantics,
-            'restricted' => $library->restricted,
-            'hasIcon' => $library->has_icon
-        );
+        if ($library) {
+            $librarydata = array(
+                'libraryId' => $library->id,
+                'machineName' => $library->machine_name,
+                'title' => $library->title,
+                'majorVersion' => $library->major_version,
+                'minorVersion' => $library->minor_version,
+                'patchVersion' => $library->patch_version,
+                'embedTypes' => $library->embed_types,
+                'preloadedJs' => $library->preloaded_js,
+                'preloadedCss' => $library->preloaded_css,
+                'dropLibraryCss' => $library->drop_library_css,
+                'fullscreen' => $library->fullscreen,
+                'runnable' => $library->runnable,
+                'semantics' => $library->semantics,
+                'restricted' => $library->restricted,
+                'hasIcon' => $library->has_icon
+            );
+        } else {
+            return [];
+        }
 
         $dependencies = $DB->get_records_sql(
                 'SELECT hl.id, hl.machine_name, hl.major_version, hl.minor_version, hll.dependency_type