1<?php 2// Create a new Db4 Instance 3$db = new Db4(); 4 5// Open it outside a Db4Env environment with datafile/var/lib/db4 6// and database name "test" 7$db->open(null, "/var/tmp/db4", "test"); 8 9// Get the current value of "counter" 10$counter = $db->get("counter"); 11print "Counter Value is $counter\n"; 12 13// Increment $counter and put() it. 14$db->put("counter", $counter+1); 15// Sync to be certain, since we're leaving the handle open 16$db->sync(); 17?> 18