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AJAX call to a PHP/MySQL script failes if a dynamic table name has a space in it.

21 New Member

Below I have some Ajax and the page it points to. This code works great if $_SESSION['find'] has no spaces in it (for example, if it is "elpaso"). However, if $_SESSION['find'] has a space in it (for example, "el paso"), then the Ajax fails.

What can I do to make this Ajax work when $_SESSION['find'] has a space in it?


Expand|Select|Wrap|Line Numbers
  1. <?php
  4. ob_start();
  5. session_start();
  6. $find = strip_tags($_POST['find']);
  7. $find = trim ($find);
  8. $find = strtolower($find);
  9. $_SESSION['find'] = $find;
  10. ?>
  12. $.ajax({
  13.             type: "POST",
  14.             data: "action=vote_up&id="+$(this).attr("id"),
  15.             url: "votes12.php",
  16.             success: function(msg)
  17.             {
  18.                 $("span#votes_count"+the_id).html(msg);
  19.                 //fadein the vote count
  20.                 $("span#votes_count"+the_id).fadeIn();
  21.                 //remove the spinner
  22.                 $("span#button"+the_id).remove();
  23.             }
  24.         });

Then, on votes12.php:
Expand|Select|Wrap|Line Numbers
  1. <?php
  2. session_start();
  3. ?>
  5. <?php
  6. mysql_connect("mysqlv10", "username", "password") or die(mysql_error());
  7. mysql_select_db("database") or die(mysql_error());
  9. function getAllVotes($id)
  10.     {
  11.     /**
  12.     Returns an array whose first element is votes_up and the second one is votes_down
  13.     **/
  14.     $votes = array();
  15.     $q = "SELECT * FROM {$_SESSION['find']} WHERE id = $id";
  16.     $r = mysql_query($q);
  17.     if(mysql_num_rows($r)==1)//id found in the table
  18.         {
  19.         $row = mysql_fetch_assoc($r);
  20.         $votes[0] = $row['votes_up'];
  21.         $votes[1] = $row['votes_down'];
  22.         }
  23.     return $votes;
  24.     }
  25. ?>
Jun 8 '09 #1
2 2843
21 New Member
Someone else told me to put backticks around the session variable and it solved the problem, so

$q = "SELECT * FROM `{$_SESSION['find']}` WHERE id = $id";
Jun 8 '09 #2
5,058 Recognized Expert Expert
Yep, that would do it.

MySQL doesn't allow table/database/procedure names with spaces, or other special characters, unless you enclose them in back-ticks.

Anyways, glad you found a solution, and thanks for sharing it!

I change the title of the thread to reflect the actual problem... might make it easier for somebody suffering the same problem to find an answer ;)
Jun 8 '09 #3

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