When you write to a symlink - you access the file itself, not the symlink, so we need to compare the atime to the orignal file

ext/standard/tests/file/lstat_stat_variation6.phpt

@@ -47,7 +47,7 @@ clearstatcache();
 
 var_dump( touch($link_name) );
 
-$new_stat = lstat($link_name);
+$new_stat = stat($file_name);
 
 // compare self stats
 var_dump( compare_self_stat($old_stat) );