The MongoDuplicateKeyException class

简介

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

类摘要

MongoDuplicateKeyException extends MongoWriteConcernException {

/* 继承的属性 */

protected string $message ;

protected int $code ;

protected string $file ;

protected int $line ;

/* 继承的方法 */

public array MongoWriteConcernException::getDocument ( void )

}

范例

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";
}
?>

以上例程的输出类似于：

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