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(PECL quickhash >= Unknown)
QuickHashIntHash::delete — This method deletes am entry from the hash
$key 
   )This method deletes an entry from the hash, and returns whether the entry was deleted or not. Associated memory structures will not be freed immediately, but rather when the hash itself is freed.
   Elements can not be deleted when the hash is used in an iterator. The
   method will not throw an exception, but simply return  FALSE  like would
   happen with any other deletion failure.
  
key The key of the entry to delete.
  TRUE  when the entry was deleted, and  FALSE  if the entry was not deleted.
  
Example #1 QuickHashIntHash::delete() example
  <?php
$hash  = new  QuickHashIntHash (  1024  );
 var_dump (  $hash -> exists (  4  ) );
 var_dump (  $hash -> add (  4 ,  5  ) );
 var_dump (  $hash -> delete (  4  ) );
 var_dump (  $hash -> exists (  4  ) );
 var_dump (  $hash -> delete (  4  ) );
 ?>   以上例程的输出类似于:
bool(false) bool(true) bool(true) bool(false) bool(false)