Executes a batch of write operations

Description

final public array MongoWriteBatch::execute ( array $write_options )

Executes the batch of write operations.

Parameters

write_options: See MongoWriteBatch::__construct.

Return Values

Returns an array containing statistical information for the full batch. If the batch had to be split into multiple batches, the return value will aggregate the values from individual batches and return only the totals.

If the batch was empty, an array containing only the 'ok' field is returned (as TRUE) although nothing will be shipped over the wire (NOOP).

Array key	Value meaning	Returned for batch type
nInserted	Number of inserted documents	MongoWriteBatch::COMMAND_INSERT batch
nMatched	Number of documents matching the query criteria	MongoWriteBatch::COMMAND_UPDATE batch
nModified	Number of documents actually needed to be modied	MongoWriteBatch::COMMAND_UPDATE batch
nUpserted	Number of upserted documents	MongoWriteBatch::COMMAND_UPDATE batch
nRemoved	Number of documents removed	MongoWriteBatch::COMMAND_DELETE batch
ok	Command success indicator	All

Errors/Exceptions

A MongoWriteConcernException exception is thrown on failure.

Examples

Example #1 MongoWriteBatch::add() example

Batching up multiple insert operations


<?php
$mc = new MongoClient("localhost");
$collection = $mc->selectCollection("test", "test");


$docs = array();
$docs[] = array("my" => "demo");
$docs[] = array("is" => "working");
$docs[] = array("pretty" => "well");

$batch = new MongoInsertBatch($collection);
foreach($docs as $document) {
    $batch->add($document);
}
$retval = $batch->execute(array("w" => 1));
var_dump($retval);
?>

The above example will output:

array(2) {
  ["nInserted"]=>
  int(3)
  ["ok"]=>
  bool(true)
}

Example #2 MongoWriteBatch::add() example

Batching up multiple update operations


<?php
$mc = new MongoClient("localhost");
$collection = $mc->selectCollection("test", "test");


$item1 = array(
    "q" => array("my" => "demo"),
    "u" => array('$set' => array("try" => 1)),
    "multi"  => false, /* default value */
    "upsert" => false, /* default value */
);
$item2 = array(
    "q" => array("is" => "working"),
    "u" => array('$set' => array("try" => 2)),
    "multi" => true,
);
$item3 = array(
    "q" => array("created" => "new-document"),
    "u" => array('$set' => array("try" => 3)),
    "upsert" => true,
);

$batch = new MongoUpdateBatch($collection);
$batch->add($item1);
$batch->add($item2);
$batch->add($item3);
$retval = $batch->execute(array("w" => 1));
var_dump($retval);

?>

The above example will output:

array(4) {
  ["nMatched"]=>
  int(18)
  ["nModified"]=>
  int(2)
  ["nUpserted"]=>
  int(0)
  ["ok"]=>
  bool(true)
}

Example #3 MongoWriteBatch::add() example

Batching up multiple delete operations


<?php
$mc = new MongoClient("localhost");
$collection = $mc->selectCollection("test", "test");


$item1 = array(
    "q" => array("my" => "demo"),
    "limit" => 1,
);
$item2 = array(
    "q" => array("try" => 3),
    "limit" => 1,
);


$batch = new MongoDeleteBatch($collection);
$batch->add($item1);
$batch->add($item2);
$retval = $batch->execute(array("w" => 1));
var_dump($retval);
?>

The above example will output:

array(2) {
  ["nRemoved"]=>
  int(1)
  ["ok"]=>
  bool(true)
}