Re: Help with msql_fetch_array()

From: Date: Wed, 24 Jul 2002 17:50:58 +0000
Subject: Re: Help with msql_fetch_array()
References: 1  Groups: php.general 
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I can almost guarantee that it's not the second line that is "failing", the problem here is that $result is not containing naything, and that is normally due to the fact that you are not connecting to the db, or the table "tablename" is not there. I use the following format as my "standard" MySQL connect and query snippet: $link = @mysql_connect("localhost",$username,$password) or die ('Could not connect!'); //@ suppresses the default error message generated by this function and the "or die()" bit kills the script right then and there should it not be able to connect.
       mysql_select_db("YOUR_DB_NAME",$link);
       $sql = "select * from your_table_name";
       if ( $result = mysql_query($sql)) {  // checks to see if $result contains anything before it even tries to fetch an associative array from it.
            $row = mysql_fetch_assoc($result);
       } else {
       echo "Empty result set!";
Note also that I use mysql_fetch_assoc and NOT mysql_fecth_array, as 9 out of 10 times, you don't need the array element id's that is returned by mysql_fetch_array. Matthew Bielecki wrote:
I have a couple of scripts that fail with the error of: Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in... I'm new to both SQL and PHP and I'm wondering if I have some setting turned off or what. Here's the piece of code that is failing (the second line fails): $result = mysql_db_query($dbname, "SELECT * FROM tablename ORDER BY id");
       $row = mysql_fetch_array($result);
Thanks for your help in advance!!


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