当我使用$time时,此处的null变量显示为var_dump。但是在分贝中,时间显示为上午9:00。我正在尝试通过电子邮件发送乘客想要上车的时间。为什么是$time null,我该如何解决?

<?php
    error_reporting(E_ALL);
    ini_set('display_errors',1);
    $host="localhost"; // Host name
    $username="user"; // Mysql username
    $password="password"; // Mysql password
    $db_name="mydb"; // Database name
    $tbl_name="pickuprequests"; // Table name

    // Connect to server and select database.
    $link = mysql_connect("$host", "$username", "$password")or die("cannot connect");
    mysql_select_db("$db_name", $link)or die("cannot select DB");

    //names of the passengers in option tags
    $name = $_POST['name'];

    //this query gets all the records from pickuprequests of the passenger selected
    $query="SELECT * FROM $tbl_name WHERE name = '$name'";
    $result=mysql_query($query, $link);

    // get the location of the passenger from $result
    $search_loc = mysql_fetch_array($result);
    $loc = $search_loc['location'];

    //get time of pickup
    $search_time = mysql_fetch_array($result);
    $time = $search_time['time'];

    //find how many rows are returned with the passenger name
    $search_row = mysql_query($query, $link);
    $count = mysql_num_rows($search_row);

    //deletes a record assoc with passenger name
    $delete_query = "DELETE FROM pickuprequests WHERE name = '$name'";

    //message for the passenger
    $msg_passenger = "Your driver is on the way! You will receive one last email when the driver arrives.";
    $subject_passenger = "Driver on the way";
    $mailheaders = "MIME-Version: 1.0"."\r\n";
    $mailheaders .= "Content-type: text/html; charset=iso-8859-1"."\r\n";
    $mailheaders .= "From: TripoZipo <tripozipo.com>"."\r\n";

    //passengers email in diff table assoc with name selected from option tags
    $query_email = "SELECT * FROM tzmember WHERE name = '$name'";
    $get_email = mysql_query($query_email,$link);
    $search_email = mysql_fetch_array($get_email);
    $email = $search_email['email'];

    //message for the driver
    $msg_driver = sprintf(
    "
    <html>
    <body>
    <table border='1'>
    <tr>
    <td>Passenger</td><td>Location</td><td>Time</td>
    </tr>
    <tr>
    <td>%s</td><td>%s</td><td>%s</td>
    </tr>
    </table>
    </body>
    </html>
    ",
    $name,
    $loc, $time);

    $subject_driver = "Passenger Location";

    //drivers email is the session name for driver.php
    $driver = $_SESSION['driver'];

    //on submit and if a passenger is selected run code
    if(isset($_POST['submit']) && isset($_POST['name'])) {

        //$count returns all the rows assoc with passenger name
        if($count) {
        //mail($email, $subject_passenger, $msg_passenger, $mailheaders); // email passenger your ride is on the way
        mail($driver, $subject_driver, $msg_driver, $mailheaders); // email driver the location
        //mysql_query($delete_query, $link); // finally delete the request as its not pending anymore
        //echo "<script type='text/javascript'> document.location = 'http://mobile.tripozipo.com/confirmation2.php'; </script>";
        }
        else {  //else if no rows are returned

        }
    }
    ?>

最佳答案

调用mysql_fetch_array会从结果集中返回完整的ROW,而不仅仅是单个列。因此,您只需要调用一次即可,而不必花时间尝试从行中获取值。

<?php
    error_reporting(E_ALL);
    ini_set('display_errors',1);
    $host="localhost"; // Host name
    $username="username"; // Mysql username
    $password="password"; // Mysql password
    $db_name="dbname"; // Database name
    $tbl_name="pickuprequests"; // Table name

    // Connect to server and select database.
    $link = mysql_connect("$host", "$username", "$password")or die("cannot connect");
    mysql_select_db("$db_name", $link)or die("cannot select DB");

    //names of the passengers in option tags
    $name = $_POST['name'];

    //this query gets all the records from pickuprequests of the passenger selected
    $query="SELECT * FROM $tbl_name WHERE name = '$name'";
    $result=mysql_query($query, $link);

    // get the location of the passenger from $result
    $row = mysql_fetch_array($result);
    $loc = $row['location'];

    //get time of pickup
    //$search_time = mysql_fetch_array($result);
    $time = $row['time'];

    //find how many rows are returned with the passenger name
    //$search_row = mysql_query($query, $link);
    $count = mysql_num_rows($result);





    //deletes a record assoc with passenger name
    $delete_query = "DELETE FROM pickuprequests WHERE name = '$name'";

    //message for the passenger
    $msg_passenger = "Your driver is on the way! You will receive one last email when the driver arrives.";
    $subject_passenger = "Driver on the way";
    $mailheaders = "MIME-Version: 1.0"."\r\n";
    $mailheaders .= "Content-type: text/html; charset=iso-8859-1"."\r\n";
    $mailheaders .= "From: TripoZipo <tripozipo.com>"."\r\n";

    //passengers email in diff table assoc with name selected from option tags
    $query_email = "SELECT * FROM tzmember WHERE name = '$name'";
    $get_email = mysql_query($query_email,$link);
    $search_email = mysql_fetch_array($get_email);
    $email = $search_email['email'];

    //message for the driver
    $msg_driver = sprintf(
    "
    <html>
    <body>
    <table border='1'>
    <tr>
    <td>Passenger</td><td>Location</td><td>Time</td>
    </tr>
    <tr>
    <td>%s</td><td>%s</td><td>%s</td>
    </tr>
    </table>
    </body>
    </html>
    ",
    $name,
    $loc, $time);

    $subject_driver = "Passenger Location";

    //drivers email is the session name for driver.php
    $driver = $_SESSION['driver'];

    //on submit and if a passenger is selected run code
    if(isset($_POST['submit']) && isset($_POST['name'])) {

        //$count returns all the rows assoc with passenger name
        if($count) {
        //mail($email, $subject_passenger, $msg_passenger, $mailheaders); // email passenger your ride is on the way
        mail($driver, $subject_driver, $msg_driver, $mailheaders); // email driver the location
        //mysql_query($delete_query, $link); // finally delete the request as its not pending anymore
        //echo "<script type='text/javascript'> document.location = 'http://mobile.tripozipo.com/confirmation2.php'; </script>";
        }
        else {  //else if no rows are returned

        }
    }
?>



  请不要使用mysql_数据库扩展名,该扩展名已弃用(PHP7中已永远消失)
  特别是如果您只是在学习PHP,请花精力学习PDOmysqli_数据库扩展,
  and here is some help to decide which to use

09-29 23:10