<?php
ini_set
('display_errors'1);
$document = [
  
"_id" => "derickr",
  
"name" => "Derick Rethans",
  
"talks" => [
    [
      
"title" => "Profiling PHP Applications",
      
"url" => "http://derickrethans.nl/talks/profiling-phptour.pdf",
    ],
    [
      
"title" => "Xdebug",
      
"url" => "http://derickrethans.nl/talks/xdebug-phpbcn11.pdf",
    ]
  ]
];

$m = new MongoClient();
var_dump$m->demo->talks->insert$document ) );
?>
Output

Fatal error: Uncaught Error: Class "MongoClient" not found in /local/Web/sites/talks.php.net/display.php(573) : eval()'d code:18 Stack trace: #0 /local/Web/sites/talks.php.net/display.php(573): eval() #1 /local/Web/sites/talks.php.net/objects.php(128): html->_example() #2 /local/Web/sites/talks.php.net/display.php(92): _tag->display() #3 /local/Web/sites/talks.php.net/objects.php(128): html->_presentation() #4 /local/Web/sites/talks.php.net/show.php(122): _tag->display() #5 {main} thrown in /local/Web/sites/talks.php.net/display.php(573) : eval()'d code on line 18