MDL-77185 session: Fix undefined disk_free_space

Fix PHP fatal error "Call to undefined function core\session\disk_free_space()" when disable_functions=disk_free_space. Prior to PHP 8.0 this error was suppressed by '@'. Co-authored-by: Federico Alvarez <[email protected]>
leonstr · Dec 31, 2024 · ae3acab · ae3acab
1 parent 04cb431
commit ae3acab
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/lib/classes/session/file.php b/lib/classes/session/file.php
@@ -53,9 +53,9 @@ public function init() {
         }
         // Need to disable debugging since disk_free_space()
         // will fail on very large partitions (see MDL-19222).
-        $freespace = @disk_free_space($this->sessiondir);
-        // MDL-43039: disk_free_space() returns null if disabled.
-        if (!($freespace > 2048) and ($freespace !== false) and ($freespace !== null)) {
+        // Moodle supports disable_functions = disk_free_space (MDL-43039).
+        $freespace = function_exists('disk_free_space') ? disk_free_space($this->sessiondir) : false;
+        if (!($freespace > 2048) and ($freespace !== false)) {
             throw new exception('sessiondiskfull', 'error');
         }