我在我的php文件中有这个:
$response = array();
$user = $db->test($email);
if ($user) {
// user stored successfully
$response["success"] = 1;
$response["user"]["email"] = $user["email"];
$response["user"]["imagepath"] = $user["imagepath"];
$response["user"]["about"] = $user["about"];
echo json_encode($response);
} else {
// user failed to store
$response["error"] = 1;
$response["error_msg"] = "JSON Error occured in db";
echo json_encode($response);
}
测试函数为
public function test($email){
$result = mysql_query("SELECT * FROM activities WHERE email = '$email'");
// return user details
return mysql_fetch_array($result);
}
测试函数返回多行，但是php只发送json，其中包含与该电子邮件匹配的数据库中的第一行。我怎么能做一个foreach()或类似的东西来编码测试函数返回的一切?
首先你必须拒绝使用mysql_fetch_array()函数(读这个)。
接下来，您必须理解变量'user'包含所有找到的用户的列表(公平地说，它应该被称为'users')
$response = array();
$users = $db->test($email);
foreach($users as $user){
if ($user) {
// user stored successfully
$response["success"] = 1;
$response["users"][] = array(
"email" => $user["email"],
"imagepath" => $user["imagepath"],
"about" => $user["about"]
);
} else {
if( empty($response) ){
// user failed to store
$response["error"] = 1;
$response["error_msg"] = "JSON Error occured in db";
}
}
}
echo json_encode($response);
和更新测试功能:
public function test($email){
$result = mysql_query("SELECT * FROM activities WHERE email = '$email'");
// get all users details
$users = array();
while($user = mysql_fetch_array($result)){
$users[] = $user;
}
return $users;
}
您需要遍历用户数组。您还需要增加数组键，以便下一个条目不会覆盖前一个条目。
<?php
$response = array();
$user = $db->test($email);
if ($user) {
// user stored successfully
$response['success'] = 1;
$key = 0; // unique key
// Loop through user array
foreach($user as $row) {
$response[$key] = array(
'email' => $row["email"],
'imagepath' => $row["imagepath"],
'about' => $row["about"];
);
$key++; // increment key
}
} else {
// user failed to store
$response['error'] = 1;
$response['error_msg'] = "JSON Error occurred in db";
}
var_dump($response); // debugging
$json = json_encode($response);
echo($json);
?>
json_encode()之前的响应数组:
array(3) {
["success"]=> string(1) "1"
[0]=>
array(3) {
["email"]=> string(21) "someemail@address.com"
["imagepath"]=> string(13) "path/to/image"
["about"]=> string(26) "about content etc etc etc."
}
[1]=>
array(3) {
["email"]=> string(22) "someemail2@address.com"
["imagepath"]=> string(14) "path/to/image2"
["about"]=> string(26) "about content etc etc etc."
}
}
json_encode()后的响应:
string(227) "{"success":"1","0":{"email":"someemail@address.com","imagepath":"path'/to'/image","about":"about content etc etc etc."},"1":{"email":"someemail2@address.com","imagepath":"path'/to'/image2","about":"about content etc etc etc."}}"