MongoDB\Driver\Manager
PHP Manual

MongoDB\Driver\Manager::executeDelete

(mongodb >=0.2.0)

MongoDB\Driver\Manager::executeDeleteConvenience method for a single delete operation

Descrierea

final public MongoDB\Driver\WriteResult MongoDB\Driver\Manager::executeDelete ( string $namespace , array|object $filter [, array $deleteOptions [, MongoDB\Driver\WriteConcern $writeConcern ]] )

Convenience method to execute a MongoDB\Driver\BulkWrite with only one delete operation.

Parametri

namespace

A fully qualified namespace (databaseName.collectionName)

filter

The search filter.

deleteOptions

deleteOptions
Option Type Description Default
limit boolean Delete all matching documents (limit=0), or only the first matching document (limit=1) 0

writeConcern

Optionally, a MongoDB\Driver\WriteConcern. If none given, default to the Write Concern set by the MongoDB Connection URI.

Valorile întoarse

Returns MongoDB\Driver\WriteResult on success, throws exception (instanceof MongoDB\Driver\Exception) on failure.

Erori/Excepții

Exemple

Example #1 MongoDB\Driver\Manager::executeDelete() example

<?php
$filter 
= array(
    
"title" => "mongodb",
);
$deleteOptions = array(
    
"limit" => 1,
);
$writeConcern = new MongoDB\Driver\WriteConcern(MongoDB\Driver\WriteConcern::MAJORITY100);

$manager = new MongoDB\Driver\Manager("mongodb://localhost:27017");
$result $manager->executeDelete("mydb.collection"$filter$deleteOptions$writeConcern);

printf("Deleted %d document(s)\n"$result->getDeletedCount());

/* If the WriteConcern could not be fulfilled */
if ($writeConcernError $result->getWriteConcernError()) {
    
printf("%s (%d): %s\n"$writeConcernError->getMessage(), $writeConcernError->getCode(), var_export($writeConcernError->getInfo(), true));
}

/* If the write could not happen at all */
foreach ($result->getWriteErrors() as $writeError) {
    
printf("%s (%d)\n"$writeError->getMessage(), $writeError->getCode());
}
?>

Exemplul de mai sus va afișa ceva similar cu:

Deleted 1 document(s)

Note

Precauţie

A single delete operation may delete more then one document.

The optional limit deleteOption should be treated as mandatory to avoid accidents, or changes in the database defaults in the future.

Notă:

On write failure, MongoDB\Driver\WriteResult::getWriteErrors() will only ever have one MongoDB\Driver\WriteError in the array, and MongoDB\Driver\WriteError::getIndex() will always be 0 (the index of this operation in the batch).

A se vedea și


MongoDB\Driver\Manager
PHP Manual