symfony
diff --git a/‎components/filesystem.rst
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@@ -283,6 +283,14 @@ isAbsolutePath
     // returns false
     $fileSystem->isAbsolutePath('../dir');
 
+tempnam
+~~~~~~~
+
+:method:`Symfony\\Component\\Filesystem\\Filesystem::tempnam` creates a temporary file with a unique filename, and returns its path, or throw an exception on failure::
+
+    // returns a path like : /tmp/prefix_wyjgtF
+    $filesystem->tempnam('/tmp', 'prefix_');
+
 dumpFile
 ~~~~~~~~