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Warning: mysql_fetch_field(): supplied argument is not a valid MySQL result resource

Posted on 2007-12-05
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Last Modified: 2013-12-12
Can anyone see why I'm getting the following PHP error:
Warning: mysql_fetch_field(): supplied argument is not a valid MySQL result resource
The code block is as follows:
$conn = mysql_connect("$myHost","$myUsername","$myPassword");
$sql = "SELECT * FROM users";
$result = mysql_query($sql,$conn);
while ($field = mysql_fetch_field($result))
{
print "$field->name";
}
0
Comment
Question by:xamian
  • 3
4 Comments
 
LVL 21

Expert Comment

by:nizsmo
ID: 20415219
try this and see what error you get?

<?php
      $conn = mysql_connect("$myHost","$myUsername","$myPassword") or die(mysql_error());
$sql = "SELECT * FROM users";
$result = mysql_query($sql,$conn) or die(mysql_error());
while ($field = mysql_fetch_field($result))
{
print "$field->name";
}
?>
0
 
LVL 21

Accepted Solution

by:
nizsmo earned 125 total points
ID: 20415227
You forgot to select your database, replace the my_database_name with your database name:


<?php
      $conn = mysql_connect("$myHost","$myUsername","$myPassword") or die(mysql_error());
      mysql_select_db("your_database_name");
$sql = "SELECT * FROM users";
$result = mysql_query($sql,$conn) or die(mysql_error());
while ($field = mysql_fetch_field($result))
{
print "$field->name";
}
?>
0
 
LVL 1

Author Closing Comment

by:xamian
ID: 31412962
Worked like a charm.  Thank You so much.
0
 
LVL 21

Expert Comment

by:nizsmo
ID: 20423162
Glad to help :)
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