Aggregation Example
demo; $c = $d->articles; $c->drop();
$c->insert( [
"title" => "Profiling PHP Applications",
"url" => "http://derickrethans.nl/talks/profiling-phptourlille11.pdf",
"tags" => [ "php", "profiling" ]
] );
$c->insert( [
"title" => "Xdebug",
"url" => "http://derickrethans.nl/talks/xdebug-phpbcn11.pdf",
"tags" => [ "php", "xdebug" ]
] );
$m = $d->command( [
'aggregate' => 'articles',
'pipeline' => [
[ '$match' => [ 'tags' => 'php' ] ],
[ '$unwind' => '$tags' ],
[ '$project' => [
'title' => [ '$add' => [ '$title', ': ', '$url' ] ],
'tag' => '$tags'
] ]
]
] );
foreach( $m['result'] as $res ) { echo $res['title'], ' (', $res['tag'], ")\n"; }
?>]]>