Threaded::synchronized Synchronization &reftitle.description; public mixedThreaded::synchronized Closureblock mixedargs Executes the block while retaining the referenced objects synchronization lock for the calling context &reftitle.parameters; block The block of code to execute args Variable length list of arguments to use as function arguments to the block &reftitle.returnvalues; The return value from the block &reftitle.examples; synchronized(function($thread){ if (!$thread->done) $thread->wait(); }, $this); } } $my = new My(); $my->start(); $my->synchronized(function($thread){ $thread->done = true; $thread->notify(); }, $my); var_dump($my->join()); ?> ]]> &example.outputs;