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(PECL mongo >=0.9.3)
MongoDB::execute — Runs JavaScript code on the database server.
The Mongo database server runs a JavaScript engine. This method allows you to run arbitary JavaScript on the database. This can be useful if you want touch a number of collections lightly, or process some results on the database side to reduce the amount that has to be sent to the client.
Returns the result of the evaluation.
Beispiel #1 Simple MongoDB::execute() example
<?php
$response = $db->execute("function() { return 'Hello, world!'; }");
echo $response['retval'];
?>
Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:
Beispiel #2 Parameter MongoDB::execute() example
The optional array of parameters will be passed to the JavaScript function.
<?php
$response = $db->execute("function(greeting, name) { return greeting+', '+name+'!'; }", array("Good bye", "Joe"));
echo $response['retval'];
?>
Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:
Beispiel #3 Scope example
If a MongoCode object is used instead of a string for the first parameter, a scope can be passed in which the JavaScript will be executed.
<?php
$func =
"function(greeting, name) { ".
"return greeting+', '+name+', says '+greeter;".
"}";
$scope = array("greeter" => "Fred");
$code = new MongoCode($func, $scope);
$response = $db->execute($code, array("Goodbye", "Joe"));
echo $response['retval'];
?>
Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:
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