The MongoDuplicateKeyException class

(PECL mongo >= 1.5.0)

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Thrown when attempting to insert a document into a collection which already contains the same values for the unique keys.

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MongoDuplicateKeyException extends MongoWriteConcernException {
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protected string $message ;
protected int $code ;
protected string $file ;
protected int $line ;
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public MongoWriteConcernException::getDocument ( void ) : array
}

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Example #1 Catching MongoDuplicateKeyException

<?php
$mc = new MongoClient("localhost");

$c = $mc->selectCollection("test", "test");

$c->insert(array('_id' => 1));
try {
    $c->insert(array('_id' => 1));
} catch (MongoWriteConcernException $e) {
    echo $e->getMessage(), "\n";
}
?>

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localhost:27017: insertDocument :: caused by :: 11000 E11000 duplicate key error index: test.test.$_id_  dup key: { : 1 }