How to get the result of a select count(*) query in PHP?

Question

I have this query to use in PHP:

mysql_query(\"select count(*) from registeredUsers where email=\".$_SESSION[\"username\"]);

When I use e

Answer 1

mysql_query returns a result resource. You can read the result with mysql_result

$res = mysql_query("select count(*) from registeredUsers where email='".mysql_real_escape_string($_SESSION["username"])."'");
echo mysql_result($res,0);

Answer 2

You need to use mysql_fetch_array() to return value in a user defined variable. Then have to print the returned value.

 $result=mysql_query("select count(*) from registeredUsers where email='{$_SESSION['username']}'")
 $COUNT_NUMBER=mysql_fetch_array($result); 
 echo "<br>1.Count=" .$COUNT_NUMBER[0]; 

Answer 3

Your code doesn't include any fetch statement. And as another answer notes, you need single quotes around $_SESSION["username"].

$result = mysql_query("select count(*) from registeredUsers where email='{$_SESSION['username']}'");

// Verify it worked
if (!$result) echo mysql_error();

$row = mysql_fetch_row($result);

// Should show you an integer result.
print_r($row);

Answer 4

mysql_query() returns a resource used to get information from the result set. Use a function such as mysql_fetch_array() to retrieve rows from the result set. In this case, there will only be one row.

Answer 5

You may want to echo out the query itself to determine that it is returning what you expect.

Answer 6

You need single quotes around the session variable in your query

$result = mysql_query("SELECT COUNT(*) 
                       FROM registeredUsers 
                       WHERE email = '".$_SESSION['username']."' ");