PHP 文件只返回一个（最新的）JSON 对象

Question

在对我的服务器执行 GET 请求时，我设置的 .PHP 文件只返回最新的 JSON 对象，而不是整个数组。我认为它正在被数组覆盖，而不是添加到它，但我对 PHP 不是太强，可以指出正确的方向。

提前感谢您的帮助，代码如下。

<?php
$result = mysql_query("SELECT * FROM books WHERE uni_year = '$uni_year' AND uni_course = '$uni_course'") or die(mysql_error());

if(!empty($result)) {
    if (mysql_num_rows($result) > 0) {

        $result = mysql_fetch_array($result);
       // $result = mysql_fetch_array($result);

       // while($row = mysql_fetch_array($result)){
        // temp array
        $books = array();
        $books["list_id"] = $result["list_id"];
        $books["book_title"] = $result["book_title"];
        $books["uni_course"] = $result["uni_course"];
        $books["uni_year"] = $result["uni_year"];
        $books["book_author"] = $result["book_author"];
        $books["book_price"] = $result["book_price"];
        $books["book_year"] = $result["book_year"];
        $books["isbn"] = $result["isbn"];
    //}
        // success
        $response["success"] = 1;

        // user node
        $response["books"] = array();

        array_push($response["books"], $books);

    } else {
        $response["success"] = 0;
        $response["message"] = "num of rows bigger than zero";
    }
} else {
        $response["success"] = 0;
        $response["message"] = "No product found";

        echo json_encode($response);
}


    echo json_encode($response);
} else {
    $response["success"] = 0;
    $response["message"] = "Required field(s) is missing";

    echo json_encode($response);
}
?>

Answer 1

您只是从结果中获取第一条记录 ($result = mysql_fetch_array($result);)。

您需要循环获取它们：

<?php
$result = mysql_query("SELECT * FROM books WHERE uni_year = '$uni_year' AND uni_course = '$uni_course'") or die(mysql_error());

if(!empty($result)) {
    if (mysql_num_rows($result) > 0) {
        $books = array();

        while($row = mysql_fetch_array($result)){
            $book = array();
            $book["list_id"] = $row["list_id"];
            $book["book_title"] = $row["book_title"];
            $book["uni_course"] = $row["uni_course"];
            $book["uni_year"] = $row["uni_year"];
            $book["book_author"] = $row["book_author"];
            $book["book_price"] = $row["book_price"];
            $book["book_year"] = $row["book_year"];
            $book["isbn"] = $row["isbn"];
            $books[] = $book;
        }
        // success
        $response["success"] = 1;

        // user node
        $response["books"] = $books;
    } else {
        $response["success"] = 0;
        $response["message"] = "num of rows bigger than zero";
    }
} else {
    $response["success"] = 0;
    $response["message"] = "No product found";
}


echo json_encode($response);