Retrieving Data From Single Cell In MySQL Table

You need to read the documentation for WPDB a bit closer. ??

You can use $wpdb->get_row($query) to get a row, or you can loop through the array returned by $wpdb->get_results();.

As Michael pointed out, all good points or you can change your code to this.

<?php
// Testing by Kirk
global $blog_id;
global $wpdb;
$thisblog = $blog_id;
echo ('Blog #' . $thisblog);
?>.' is at Level #'. <?php
$res = $wpdb->get_results("SELECT level FROM wp_pro_sites WHERE blog_ID = '$thisblog'");
if( is_array( $res ) ) {
   foreach( $res as $data ) {
       $level = $data->level;
       // If the above line fails try
       $level = $data['level']
       // If that line also fails do this
       print_r($data);
       // The above line will print our the contents of $data
   }
}
?>

Basically the error you are getting is because $wp->get_results will always return an array and your attempting to echo that array which you cannot do, instead you could change the line.

echo $res;

to

print_r($res)

and that will show you what is inside the array and then you can change up the echo statement to display the data, you might even get lucky and have it work by changing the

echo $res;

to simply be as

echo $res[0];

Hope that helps. However your best bet if your only returning one thing from the table is to change this line.

$res = $wpdb->get_results(

to this

$res = $wpdb->get_var(

That should also do the trick.

Thanks Michael,
Thanks Adam,

I apologize for not posting before I went to bed last night, but old geezers get worn out with this coding stuff. (I don’t see how you guys do it night and day!)

Anyhoo, after spending most all of the second day on it, I wound up with this

<?PHP
// Testing by Kirk
global $blog_id;
global $wpdb;
$thisblog = $blog_id;
echo ("Blog #".$thisblog);
?> is at Level #<?php
$level = $wpdb->get_var("SELECT level FROM wp_pro_sites WHERE blog_ID = '.$thisblog.' ");
// Echo the user's level
echo $level;
?>

The biggest change was using ->get_var instead of ->get_results

And, of course, finally realizing that I needed to keep that semi-colon after the MySQL query. I was getting confused after reading that an MySQL query wasn’t supposed to have a semi-colon behind it, until I realized that putting it in the parentheses did make it part of a PHP statement.

Another question, how do you guys remember all this stuff?

@kirkward – After developing and programming for 12 years you naturally remember a ton of stuff but you will never remember everything, you always forget things you haven’t used in awhile, every programmer will have to refer back to documentations once and awhile.

Basically there is too much to remember but as long as you have resources like the https://codex.www.ads-software.com/, https://codex.www.ads-software.com/Function_Reference/, and https://php.net/manual/en/ you can quickly refresh your memory and solve almost any problem.

Things like forgetting semi-colons will always be common but are minor because once you make the same mistake a thousand times over you’ll always know what not to do, that is the best and most frustrating thing about programming, if you want to become an expert in it you really need a strong passion for it (Especially if your self-taught).

Most people eventually give up due to the frustrations and errors they make along the way but they don’t realize we’ve all been there, it’s the errors you overcome that help you excel at this kinda work.

Hi
i am getting error here is my code

global $wpdb;
$result = $wpdb->get_var(
“SELECT visa_status from wp_v_detail where uniquecode = ‘$in_id'” );
echo $result;

i want to get only current status and display to page.i am not able to see anything after submitting button

Thanx
Sanket