[英]lastInsertID returning 0, even with a persistent Connection
im using the function PDO::lastInsertID (also happening with mysqli_insert_id), but it's always returning 0. 我使用函数PDO :: lastInsertID(也与mysqli_insert_id一起发生),但是它总是返回0。
I already looked up the problem and saw that this should've fixed the problem: MySQL: LAST_INSERT_ID() returns 0 by turning on persistentConnections in the phpmyadmin "config.inc.php" file, but the problem still remains... 我已经查看了问题,发现应该可以解决问题: MySQL:LAST_INSERT_ID()通过打开phpmyadmin“ config.inc.php”文件中的persistentConnections 返回0 ,但是问题仍然存在。
my table 'reservations' has a primary key which AUTO_INCREMENTs. 我的表“预订”有一个主键AUTO_INCREMENTs。
here is my code: 这是我的代码:
I got a button on my site which calls this javascript code: 我在网站上看到一个按钮,该按钮调用此javascript代码:
function sonderbuchung()
{
setReservationType();
getSonderbuchungID();
}
function getSonderbuchungID() {
$.ajax({
url:'sonderbuchungEditID.php',
complete: function (response) {
$('#output').html(response.responseText);
},
error: function () {
$('#output').html('Bummer: there was an error!');
}
});
return false;
}
function setReservationType()
{
$.ajax({
url: "reservationType.php",
type: "POST",
data: 'reservationtype=sonderbuchung',
success: function(data) {
$('#output').html(data);
},
error: function(data) {
$('#output').html(data.responseText)
},
});
}
On my mySQL server there is a random String generated after a Insert happend, and now I want to get the random String by looking at the last Inserted ID and taking it's randomString. 在我的mySQL服务器上,插入发生后生成了一个随机字符串,现在我想通过查看最后一个插入的ID并将其取为randomString来获取随机字符串。 (Not implemented yet obviously 'cause of this problem)
(尚未实施,显然是因为这个问题)
sonderbuchungEditID.php: sonderbuchungEditID.php:
<?php
require_once('bdd.php'); //Database connection
echo($bdd->lastInsertID());
?>
reservationType.php (all fine working, just for the sake of all code) ReservationType.php(一切正常,只是为了所有代码)
<?php
require_once('bdd.php');
if(isset($_POST['reservationtype'])){
$reservationtype = $_POST['reservationtype'];
$sql = "INSERT INTO reservations(reservationtype) values ('$reservationtype')";
$query = $bdd->prepare($sql);
if ($query == false) {
file_put_contents('LOGname.txt', print_r($bdd->errorInfo(), true));
die ('Error prepairing');
}
$sth = $query->execute();
if ($sth == false) {
file_put_contents('LOGname.txt', print_r($query->errorInfo(), true));
die ('Error executing');
}
}
?>
You would need to capture and store the ID when the row is inserted. 插入行时,您需要捕获并存储ID。
sonderbuchungEditID.php: sonderbuchungEditID.php:
<?php
echo isset($_SESSION['last_id']) ? $_SESSION['last_id'] : "-1";
?>
reservationType.php: reservationType.php:
<?php
require_once('bdd.php');
if(isset($_POST['reservationtype'])){
$reservationtype = $_POST['reservationtype'];
$sql = "INSERT INTO reservations(reservationtype) values ('$reservationtype')";
$query = $bdd->prepare($sql);
if ($query == false) {
file_put_contents('LOGname.txt', print_r($bdd->errorInfo(), true));
die ('Error prepairing');
}
$sth = $query->execute();
if ($sth == false) {
file_put_contents('LOGname.txt', print_r($query->errorInfo(), true));
die ('Error executing');
} else {
// Remember the last ID inserted.
$_SESSION['last_id'] = $bdd->lastInsertID();
}
}
?>
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