mysql_num_rows() expects parameter 1 to be resource, boolean given

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Hi! So I'm a super noob beginner in pHp and I'm just doing my best to understand all of this.
I've managed to fix every problem that I've come in contact with except this one.

mysql_num_rows() expects parameter 1 to be resource, boolean given

I get this error from trying to run this

PHP

if(isset($_POST['search_name'])) {
    $search_name = $_POST['search_name'];
    if(!empty($search_name)) {
        $query = "SELECT guild, focus, website, leader, members, voip, post, yes_no_website, single_multiple_leadersw FROM guilds WHERE guild LIKE '%".mysql_real_escape_string($search_name)."%'";

        $query_run = mysql_query($query);
                if (mysql_num_rows($query_run)>=1) {
                    while ($query_row = mysql_fetch_assoc($query_run))  {
                        echo $query_row['guild'];
                    }


                 }else{
                echo 'No results found.';
            }
        }
}

And I have no idea how to fix this, I apologize if I didn't post in the correct format or something.

Thanks for any help

Posted 31-Mar-13 15:45pm

Ashton Thorsen

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Matej Hlatky · Answer 1 · 2013-03-31T16:12:00

According to documentation,for SELECT and other statements returning resultset, mysql_query()[^] returns a resource on success, or FALSE on error. Check your query in console or any MySQL gui tool.
Place breakpoint (if you are using some intelligent IDE) or var_dump($query_run) after mysql_query($query) and you will see, what the function call returned.