无法弄清楚为什么PHP无法通过$ .ajax调用接收POST数据 [英] Can't figure out why PHP not receiving POST data from $.ajax call
问题描述
这不像我之前没有做过同样的过程,但是我不知道为什么我的PHP脚本的POST数据为空.这是我已经完成/发现的事情:
It's not like I haven't done this same process before, but I can't figure out why my PHP script's POST data is empty. Here's what I've done/found:
-
我已验证$ .ajax调用的数据"参数具有值(submitSearch函数中的警告和成功参数中的警告显示搜索变量的正确值).
I've verified that the $.ajax call's "data" parameter has a value (alerts in the submitSearch function and in the success parameter show the correct value of the search variable).
我知道该脚本已被找到"-在浏览器的js控制台中找不到未找到文件的消息.
I know that the script is being "found" - no file not found messages in the js console in the browser.
我没有任何数据库连接错误
I'm not getting any db connection errors
我还知道PHP脚本正在运行,因为$ .ajax调用的success参数中的警报正在PHP脚本的else子句中显示$ message值.
I also know that the PHP script is running because the alert in the $.ajax call's success parameter is displaying the $message value in the PHP script's else clause.
我在PHP脚本中设置的日志记录未显示POST数据
The logging I have set up in the PHP script is displaying nothing for the POST data
如果有人可以看一下并希望指出我所缺少的内容,我将不胜感激.
I'd greatly appreciate it if someone can take a look at this and hopefully point out what I'm missing.
以下是所有相关代码:
Javascript(位于HTML文件中的script标签中)
Javascript (in a script tag within the HTML file)
$('input#btnSubmitSearch').click(function() {
// Clear the text box in case an error was indicated previously
$('input#txtSearch').css({'background-color' : ''});
var search = $('input#txtSearch').val();
if (search == '' || search.length != 5) {
alert ('Not a valid entry!');
$('input#txtSearch').css({'background-color' : '#FDC3C3'});
return false;
}
else {
submitSearch(search);
return false;
}
});
function submitSearch(search) {
alert ('Sending ' + search + ' to the database.');
$.ajax({
type: 'POST',
url: 'scripts/search.php',
data: search,
cache: false,
success: function(response) {
alert ('search is: ' + search + ', Response from PHP script: ' + response);
},
error: function(xhr) {
var response = xhr.responseText;
console.log(response);
var statusMessage = xhr.status + ' ' + xhr.statusText;
var message = 'Query failed, php script returned this status: ';
var message = message + statusMessage + ' response: ' + response;
alert(message);
}
});
}
PHP脚本(scripts/search.php)
PHP script (scripts/search.php)
<?php
require_once ('logging.php');
$log = new Logging();
$dbc = @mysqli_connect([connection stuff])
OR die ('Could not connect to MySQL server: ' . mysqli_connect_error() );
$log->lwrite('$_POST[\'search\']: ' . $_POST['search']);
if (isset($_POST['search'])) {
$search = $_POST['search'];
$log->lwrite('$search: ' . $search);
$querySearch= "SELECT id, value
FROM table
WHERE value LIKE '%" . $search . "%'";
$log->lwrite('$querySearch: ' . $querySearch);
$resultSearch = @mysqli_query($dbc, $querySearch);
$numRowsSearch = mysqli_num_rows($resultSearch);
$log->lwrite('rows returned: ' . $numRowsSearch);
if ($numRowsSearch > 0) {
while ($rowSearch = mysqli_fetch_array($resultSearch, MYSQLI_ASSOC)) {
echo 'Value found: ' . $rowSearch['value'];
}
}
}
else {
$errorMessage ='$_POST[\'search\'] doesn\'t have a value!';
$log->lwrite($errorMessage);
echo ($errorMessage);
}
推荐答案
$.ajax({
type: 'POST',
url: 'scripts/search.php',
data: {'search': search},
...
我相信您需要如上所述设置$_POST['search']
.
I believe you need to set $_POST['search']
as above.
这篇关于无法弄清楚为什么PHP无法通过$ .ajax调用接收POST数据的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!