php man page for weakmap

WEAKMAP(3)								 1								WEAKMAP(3)

The WeakMap class

INTRODUCTION
CLASS SYNOPSIS
       WeakMap

       WeakMapCountableArrayAccessIterator

       Methods

       o public WeakMap::__construct (void  )

       o public int WeakMap::count (void  )

       o public mixed WeakMap::current (void  )

       o public object WeakMap::key (void  )

       o public void WeakMap::next (void  )

       o public bool WeakMap::offsetExists (object  $object)

       o public mixed WeakMap::offsetGet (object  $object)

       o public void WeakMap::offsetSet (object  $object, mixed  $value)

       o public void WeakMap::offsetUnset (object  $object)

       o public void WeakMap::rewind (void  )

       o public bool WeakMap::valid (void  )

EXAMPLES
       Example #1

	      Weakmap usage example

	      <?php
	      $wm = new WeakMap();

	      $o = new StdClass;

	      class A {
		  public function __destruct() {
		      echo "Dead!
";
		  }
	      }

	      $wm[$o] = new A;

	      var_dump(count($wm));
	      echo "Unsetting..
";
	      unset($o);
	      echo "Done
";
	      var_dump(count($wm));

	      The above example will output:

	      int(1)
	      Unsetting..
	      Dead!
	      Done
	      int(0)

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