我正在尝试使用concat选择多个列,并将返回的数据放入一个文本框中。
我认为我对变量的定义有问题。但我无法弄清楚出了什么问题。以下是变量:
$id = isset($_POST['id'])?$_POST['id']:'';
$name = isset($_POST['firstname'])?$_POST['firstname']:'';
$name .= isset($_POST['insertion'])?$_POST['insertion']:'';
$name .= isset($_POST['lastname'])?$_POST['lastname']:'';
当我为$ name定义一个变量时,脚本可以工作。但这不是我想要的。
有人知道出了什么问题吗?
这是我脚本的另一部分。
首先我有一个文本框。需要将数据发送到此文本框:
<input type="text" class="form-control" id="name" name="name" placeholder="Name">
按钮调用发送&#39; 5&#39;作为ID并运行脚本getName():
<button type="button" rel="5" onclick="getName();"
<script type="text/javascript">
$('body').on('click', '.selectClass', function () {
var id = $(this).attr('rel');
$("#id").val(id);
modal.style.display = "none";
});
</script>
点击按钮后,会在此处部署ID:
<input type="text" class="form-control" id="id" name="id">
onClick事件运行以下脚本:
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script>
function getName(value) { // Do an Ajax request to retrieve the product price
console.log("getName before ajax", jQuery('#id').val());
jQuery.ajax({
url: './get/getname5.php',
method: 'POST',
data: {'id' : jQuery('#id').val()},
success: function(response){
console.log("getName after ajax", jQuery('#id').val());
jQuery('#name').val(response);
},
error: function (request, status, error) {
alert(request.responseText);
},
});
}
</script>
jquery脚本调用PHP,它不使用$ name
的多个变量<?php
session_start();
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "db";
$conn = new mysqli($servername, $username, $password, $dbname) ;
if ($conn->connect_error) {
die('Connection failed: ' . $conn->connect_error) ;
}else {
$id = isset($_POST['id'])?$_POST['id']:'';
$name = isset($_POST['firstname'])?$_POST['firstname']:'';
$name .= isset($_POST['insertion'])?$_POST['insertion']:'';
$name .= isset($_POST['lastname'])?$_POST['lastname']:'';
$query = 'SELECT concat(firstname, ' ', insertion, ' ', lastname) as name FROM users WHERE id="' . mysqli_real_escape_string($conn, $id) . '"';
$res = mysqli_query($conn, $query) ;
if (mysqli_num_rows($res) > 0) {
$result = mysqli_fetch_assoc($res) ;
echo $result['name'];
}else{
$result = mysqli_fetch_assoc($res) ;
echo $result['name'];
}
}
?>