I am running an insert query using PDO and then getting the newly created Id with lastInsertId(). This is all working on my localhost environment.
When I move the exact same code onto a server, the lastInsertId() is always returning blank, even though the insert statement works and inserts the new row into the database. Would this be a setting in my configuration? Any help is appreciated.
$insertstmt = $dbinsert->prepare($insertsql);
// bindParams ...
$insertstmt->execute();
// always blank
$id = $dbinsert->lastInsertId();
$dbinsert = null;
我最终使用以下方法替换了lastInsertId(): http ://php.net/manual/en/pdo.lastinsertid.php#105580
$temp = $sth->fetch(PDO::FETCH_ASSOC);
I've describe a solution for this problem on my blog . I couldn't directly modify sql queries in the code, so I extended the PDO class in this way
class BetterPDO extends \PDO
{
protected $stmt;
protected $withIdentitySelect;
public function prepare($statement, $driver_options = null)
{
$this->$withIdentitySelect = false;
if (preg_match('/^insert/i', $statement)) {
$statement = "{$statement}; select SCOPE_IDENTITY() AS 'Identity';";
$this->$withIdentitySelect = true;
}
$this->stmt = parent::prepare($statement, is_array($driver_options) ? $driver_options : []);
return $this->stmt;
}
public function query($statement)
{
$this->$withIdentitySelect = false;
if (preg_match('/^insert/i', $statement)) {
$statement = "{$statement}; select SCOPE_IDENTITY() AS 'Identity';";
$this->$withIdentitySelect = true;
}
$this->stmt = parent::query($statement);
return $this->stmt;
}
public function lastInsertId($name = null)
{
$lastIndex = 0;
if (($this->$withIdentitySelect) && ($this->stmt->columnCount() > 0)) {
$lastIndex = $this->stmt->fetchColumn(0);
$this->stmt->closeCursor();
}
return $lastIndex;
}
}
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