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我想創建一個簡單的評論欄，使用PHP，AJAX，MySQL和json編碼。評論條mysql php和ajax
我有兩個文件用PHP編寫的，第一個是控制器與下面的代碼：
<?php
require("../includes/config.php");
if ($_SERVER["REQUEST_METHOD"] == "GET") {
$comments = query("SELECT comments.comment, comments.author, comments.time FROM comments WHERE workid = ?", $_GET["workid"]);
echo json_encode($comments);
}
else if ($_SERVER["REQUEST_METHOD"] == "POST") {
if (empty($_SESSION["userid"])) {
throw new Exception("Login");
}
else {
$result = query("INSERT INTO comments (comment, author, time, workid) VALUES(?, ?, ?, ?)", $_POST["text"], $_SESSION["userid"], date("Y-m-d H-i-s"), $_POST["workid"]);
if ($result !== false) {
echo "success";
}
}
}
?>
第二個被聲稱是從MySQL顯示記錄的基礎上，從數據控制器：
<script>
//loads the comments
$(document).ready(function(){
var comment;
$.ajax({
type: "GET",
url: "../html/comments.php",
data: {
workid: <?php echo $id;?>
},
dataType: "json",
success: function(e) {
var lis = "";
for (var i = 0; i < e.length; i++) {
comment = e[i];
lis +=
"<li class='comment'>" +
"<div class='well'>" +
"<p>" +
"<a class='username' href='#'>" + comments.author + ": " + "</a>" +
comments.comment +
"</p>" +
"<small class='pull-right'>" + comments.time + "</small>" +
"</div>" +
"</li>";
}
$("#comments").html(lis);
},
error: function(e) {
$("#comments").html(
"<li class='comment'> Couldn't load comments </li>"
);
}
});
});
</script>
<script>
$(document).ready(function(){
$("#comment-button").click(function(){
$.ajax({
type: "POST",
url: "../html/comments.php",
data: {
workid: <?php echo $id;?>,
text: $("#comment-textarea").val()
},
dataType: "text",
success: function(e) {
var comment;
$.ajax({
type: "GET",
url: "../html/comments.php",
data: {
workid: <?php echo $id;?>
},
dataType: "json",
success: function(e) {
var lis = "";
for (var i = 0; i < e.length; i++) {
comment = e[i];
lis +=
"<li class='comment'>" +
"<div class='well'>" +
"<p>" +
"<a class='username' href='#'>" + comments.author + ": " + "</a>" +
comments.domment +
"</p>" +
"<small class='pull-right'>" + comments.time + "</small>" +
"</div>" +
"</li>";
}
$("#comments").html(lis);
$("#comment-textarea").val("");
},
error: function(e) {
$("#comments").html(
"<li class='comment'> Couldn't load comments </li>"
);
}
});
}
});
});
});
</script>
一切工作都很好，除了最後一步;當顯示來自數據庫的數據時，唯一顯示的是「未定義」語句而不是corect數據。除此之外，正確顯示評論和表單的數量。我正在使用安裝了php的Apache服務器。
代碼的意思是PDO？ –
是的。 PDO也啓用。 –
我們能否請求方法/函數查詢的代碼（） –