如何在php mysql中获取结果的所有行？

Question

在我的表中我有2条记录companyid = 1,但是当我运行下面的php时,companyid = 1它只返回第一个!
我怎样才能获取所有记录？

php文件:

if (isset($_GET["companyid"])) {
$companyid = $_GET['companyid'];

// get a product from products table
$result = mysql_query("SELECT * FROM `products`         
                        WHERE companyid = $companyid;");

if (!empty($result)) {      

    if (mysql_num_rows($result) > 0) {

   while($row = mysql_fetch_assoc($result)){
      $product = array();
      $product["pid"] = $row["pid"];
      $product["productname"] = $row["productname"];        
    }

   $response["product"] = array();

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

        // success
       $response["success"] = 1;

   echo json_encode($response);

    } else {
        // no product found
        $response["success"] = 0;
        $response["message"] = "No product found";

        // echo no product JSON
        echo json_encode($response);
    }
} else {
    // no product found
    $response["success"] = 0;
    $response["message"] = "No product found";

    // echo no users JSON
    echo json_encode($response);
}
} else {
$response["success"] = 0;
$response["message"] = "Required field(s) is missing";

// echoing JSON response
echo json_encode($response);
}

使用mysql_fetch_array正在发生同样的事情.它返回{"product":[{"pid":"12371","productname":"test"}],"success":1} 当我运行没有参数的查询时select * from table使用mysql_fetch_array它返回所有行..

Answer 1

正如NikiC指出你不应该再使用mysql_函数,你可以在PDO和mysqli中获取整个数组.这是一个使用mysqli-> fetch_all函数获取所有行的示例,希望这有帮助!

//Database Connection
$sqlConn =  new mysqli($hostname, $username, $password, $database);

//Build SQL String
$sqlString = "SELECT * FROM my_table";

//Execute the query and put data into a result
$result = $sqlConn->query($sqlString);

//Copy result into a associative array
$resultArray = $result->fetch_all(MYSQLI_ASSOC);

//Copy result into a numeric array
$resultArray = $result->fetch_all(MYSQLI_NUM);

//Copy result into both a associative and numeric array
$resultArray = $result->fetch_all(MYSQLI_BOTH);

Answer 2

while ($row = mysql_fetch_assoc($result)) {
    echo $row["userid"];
    echo $row["fullname"];
    echo $row["userstatus"];
}

mysql_free_result($result);

php.net/mysql_fetch_assoc

我建议你使用PDO而不是mysql_

if (!empty($result)) {

可能 is_resource($result)

Answer 3

您需要循环遍历结果以提取所有行：

while($row = mysql_fetch_assoc($result)){
//Do stuff 
}

附带说明一下，您应该至少使用 mysqli 或 PDO 而不是 mysql_* 函数。