使用数组元素运行SQL查询

Question

what I am trying to do is extract elements of an array and running an sql query with the array element as the condition. The problem what I am facing is that the query does not return anything. The code is given below

//extracting the array elements
      foreach ($t as $value) {
      extract($value);

     }
 $sql = "SELECT * FROM daily_log where employee_log_id='$employee_log_id' AND log_date='$value'</br>";
            $result = mysql_query($sql);
            $row = mysql_fetch_array($result);
        echo $row['in_time'];
        echo $row['out_time'];

The echo $row['in_time'] and echo $row['out_time']; does not show anything.

Can anybody help me to figure out what the problem is Thanks in advance.

Answer 1

The problem is your sql query code is outside the foreach loop. The $value variable doesn't exist in that scope.
Try this:

foreach ($t as $value) {
    extract($value);
    $sql = "SELECT * FROM daily_log where employee_log_id='$employee_log_id' AND log_date='$value'</br>";
    $result = mysql_query($sql);
    $row = mysql_fetch_array($result);
    echo $row['in_time'];
    echo $row['out_time'];
}

EDIT:
But I can't understand what you are trying to do. I think you either need the extract() function or the foreach loop. Also, why is there a </br> html tag in your sql query string?
Do you want something like this?

foreach ($t as $key -> $value) {
    $sql = "SELECT * FROM daily_log where employee_log_id='$key' AND log_date='$value'";
    $result = mysql_query($sql);
    $row = mysql_fetch_array($result);
    echo $row['in_time'];
    echo $row['out_time'];
}