Question

I have a problem when I pass a value to a function that is post into the document in PHP

This is the function definition,

function findstation($val){
   global $positions_table;
   var_dump($val);
   $id=$val;
   $query = array('uid'=> $id );
   $result = $positions_table->find($query);
   foreach ($result as $station){
      return $station['name'];
   }
}

This function queries a mongoDB database to find and return the key name from the DB
I have page which posts the id into the document as $_POST['id'].

This is how I search in it

if(isset($_POST['submit'])){
    echo "START!";
    $st = $_POST['station'];
    var_dump($t);
    findstation($st);
    echo "EXECUTED THE FUNCTION"; // Just added this to diagnose
}

When I search like this, i don’t get any results it just displays START!EXECUTED THE FUNCTION

But when i call the function like this

findstation(2);

I get a result. How can I get this to work when I pass it as a varible ?

PS: $_POST['id'] is passed as value of a <select> input.

Answer 1

if(isset($_POST['submit'])){
    echo "START!'; // < == there you use a double to start string and a single quote to end
    $st = $_POST['station'];
    $t = (int)$st;
    var_dump($t);
    findstation($st);
    echo "EXECUTED THE FUNCTION"; // Just added this to diagnose
}

Correct:

if(isset($_POST['submit'])){
    echo "START!"; // corrected string;
    $st = $_POST['station'];
    $t = (int)$st;
    var_dump($t);
    findstation($st);
    echo "EXECUTED THE FUNCTION"; // Just added this to diagnose
}