为什么我的代码不起作用?
<?php
session_start();
require_once("connecting-to-database.php");
$query = $pdo->prepare("SELECT * FROM `timetables` WHERE `who` = :who");
$query->execute(array(
":who" => $_SESSION["id"]["username"]));
if ($query->rowCount() > 0) {
$query = $pdo->prepare("UPDATE `timetables` SET `who` = :who, `day` = :day");
$result = $query->execute(array(
":who" => $_SESSION["id"]["username"],
":day" => $_GET["timetable"]));
} else {
$query = $pdo->prepare("INSERT into `timetables`(`who`, `day`) VALUES(:who, :day)");
$result = $query->execute(array(
":who" => $_SESSION["id"]["username"],
":day" => $_GET["timetable"]));
}
我看不到错误,因为我正在使用方法GET的AJAX。
在主网站上我有:
var rocket = JSON.stringify(timetable);
var xhttp = new XMLHttpRequest();
xhttp.open("GET", encodeURI("modify-timetable.php?timetable=" + rocket), true);
console.log(rocket);
如果你的信息较少,我可以再给你一些。
答案 0 :(得分:0)
了解如何使用IODKU。它可以替换您提供的所有代码。
INSERT into `timetables` (`who`, `day`)
VALUES (:who, :day)
ON DUPLICATE KEY UPDATE `day` = :day
(确实需要who
为PRIMARY
或UNIQUE
密钥。)