Php/docs/mongodb.lasterror

• PHP Manual
• MongoDB
• Check if there was an error on the most recent db operation performed

MongoDB::lastError

(PECL mongo >=0.9.5)

MongoDB::lastError — Check if there was an error on the most recent db operation performed

说明

public MongoDB::lastError ( ) : array

This method is equivalent to:

<?phppublic function lastError() {    return $this->command(array('getlasterror' => 1));}?>

参数

此函数没有参数。

返回值

Returns the error, if there was one.

范例

Example #1 MongoDB::lastError() null error example

<?php$db->resetError();var_dump($db->lastError());?>

以上例程的输出类似于：

array(3) {
  ["err"]=>
  NULL
  ["n"]=>
  int(0)
  ["ok"]=>
  float(1)
}

Example #2 MongoDB::lastError() duplicate key example

<?php$c = $db->selectCollection("foo");// insert two documents with the same _id$c->insert(array("_id" => 1));$c->insert(array("_id" => 1));var_dump($db->lastError());?>

以上例程的输出类似于：

array(3) {
  ["err"]=>
  string(64) "E11000 duplicate key errorindex: foo.foo.$_id_  dup key: { : 1 }"
  ["n"]=>
  int(0)
  ["ok"]=>
  float(1)
}