大家好:)我在编程领域很新,所以我真的需要你的帮助。我试图从一些数据库表中获取数据,不幸的是我的$ .getJson()函数出了问题。如果我运行php文件它可以工作,所以使用script.js中的函数。我的HTML也没问题,所以我认为这是$ get.JSON错误。我不太了解这么多javascript,所以我把所有的希望寄托在你身上:*
html文件:
<!doctype html>
<html>
<head>
<meta charset="utf-8" />
<title>jQuery Ajax - PHP</title>
<script type="text/javascript" src="jquery.js"></script>
</head>
<body>
<script src="script.js">
</script>
</body>
</html>
script.js文件:
$('document').ready( function() {
done();
}
);
function done() {
setTimeout(function() {
updates();
done();
}
, 200 );
}
function updates(){
$.getJSON( "read.php", function (data){
$.each(data.array, function () {
$("body").append("<li>Titlu: "+this['title']+"</li>
<li>Descriere: "+this['describtion']+"</li>");
}
);
$.each(data.array1, function () {
$("body").append("<li>Id: "+this['id']+"</li>
<li>Category_Id: "+this['category_id']+"</li>
<li>Titlu: "+this['title']+"</li>
<li>Descriere: "+this['describtion']+"</li>");
}
);
$.each(data.array2, function () {
$("body").append("<li>Id: "+this['id']+"</li>
<li>Titlu: "+this['title']+"</li>
<li>Latitudine: "+this['location_latitude']+"</li>
<li>Longitudine:"+this['location_longitude']+"</li>
<li>Numar de telefon: "+this['phone_number']+"</li>
<li>Descriere: "+this['describtion']+"</li>");
}
);
$.each(data.array3, function () {
$("body").append("<li>Id: "+this['id']+"</li>
<li>Interest_point_id:"+this['interest_point_id']+"</li>
<li>Pret: "+this['price']+"</li>
<li>Data: "+this['event1_time']+"</li>");
}
);
}
);
}
最后是read.php文件(这里显示了我的期望,所以我觉得一切都很好):
<?php
include_once ('db.php');
$query= "SELECT * FROM category";
$query1= "SELECT * FROM sub_category";
$query2= "SELECT * FROM interest_point";
$query3= "SELECT * FROM event1";
global $connect;
$result = mysqli_query($connect,$query);
$result1 = mysqli_query($connect,$query1);
$result2 = mysqli_query($connect,$query2);
$result3 = mysqli_query($connect,$query3);
$array = array();
$array1 = array();
$array2 = array();
$array3 = array();
while($row=mysqli_fetch_array($result))
array_push($array , array( 'id' => $row[0],
'title' => $row[1],
'describtion' => $row[2]
));
while($row1=mysqli_fetch_array($result1))
array_push($array1 , array( 'id' => $row1[0],
'category_id' => $row1[1],
'title' => $row1[2],
'describtion' => $row1[3]
));
while($row2=mysqli_fetch_array($result2))
array_push($array2 , array('id' => $row2[0],
'title' => $row2[1],
'location_latitude' => $row2[2],
'location_longitude'=> $row2[3],
'phone_number' => $row2[4],
'describtion' => $row2[5]
));
while($row3=mysqli_fetch_array($result3))
array_push($array3 , array(
'id' => $row3[0],
'interest_point_id'=> $row3[1],
'price' => $row3[2],
'event1_time' => $row3[3]
));
echo json_encode(array("array"=>$array)).'<br>'.'<br>';
echo json_encode(array("array1"=>$array1)).'<br>'.'<br>';
echo json_encode(array("array2"=>$array2)).'<br>'.'<br>';
echo json_encode(array("array3"=>$array3)).'<br>'.'<br>';
?>
答案 0 :(得分:1)
发送json时只能回显一次,只能有一个包含所有数据的php数组。您无法在此外打印任何内容,例如<br>
代码
尝试更改
echo json_encode(array("array"=>$array)).'<br>'.'<br>';
echo json_encode(array("array1"=>$array1)).'<br>'.'<br>';
echo json_encode(array("array2"=>$array2)).'<br>'.'<br>';
echo json_encode(array("array3"=>$array3)).'<br>'.'<br>';
要
$output = array(
"array1"=>$array1,
"array2"=>$array2,
"array3"=>$array3
);
echo json_encode($output);
另请注意<li>
是<body>
的无效儿童。使用<div>
或插入<ul>