(PECL mongo >=0.9.5)
MongoDB::lastError — Check if there was an error on the most recent db operation performed
This method is equivalent to:
<?php
public function lastError() {
return $this->command(array('getlasterror' => 1));
}
?>
此函数没有参数。
Returns the error, if there was one.
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)
}