comparing array of values to database

Database Development

User Name:

Password:

Remember me

Dev Articles Community Forums Sponsor:

Stay one step ahead of the competition. Evaluate and give feedback on some of the hottest web development tools on the market today. Make your opinion heard! Click Here

September 27th, 2002, 08:04 PM

Decoy

Registered User

Join Date: Aug 2002

Posts: 28

Time spent in forums: < 1 sec
Reputation Power: 0

comparing array of values to database

Hi

I need to be able to compare an array of values to a database tables before actually entering them in the db (to prevent duplicate entries).

I know how to compare specific values like this...

PHP Code:


		
			
 $sql = "SELECT * FROM users WHERE user_name = '$user' and password = '$password'";

$result = mysql_query($sql);

$num = mysql_numrows($result);

if($num != '0')

{

  echo 'Values entered';

}

but not an array. The code below is what I have, 'winners' is the array.

PHP Code:


		
			
if(is_array($winners))

{

  for($i=0; $i < count($winners); $i++)

  {

    $add = addslashes($winners[$i]); 

    $result = mysql_query("INSERT INTO winners VALUES(NULL, $weekid,'$add', now())");

  }

  TeamsPicked();    

}

else

{

  echo Error();

}

Could someone point me in the right direction?

Thanks

September 27th, 2002, 08:52 PM

Ben Rowe

Guest

Posts: n/a
Time spent in forums:
Reputation Power:

you would need something like this

foreach($winners as $key=>$value)
{
$query = mysql_query("SELECT * FROM table WHERE value = $value");

if(mysql_num_rows($query) == 0)
{
//insert into database

}
}

September 27th, 2002, 09:41 PM

Decoy

Registered User

Join Date: Aug 2002

Posts: 28

Time spent in forums: < 1 sec
Reputation Power: 0

Thank you Ben!

Much appreciated

Viewing: Dev Articles Community Forums > Databases > Database Development > comparing array of values to database

« Previous Thread | Next Thread »

Thread Tools	Search this Thread
Email this Page	Search this Thread: Advanced Search
Display Modes	Rate This Thread
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode	Rate This Thread:

Posting Rules
You may not post new threads You may not post replies You may not post attachments You may not edit your posts vB code is On Smilies are On [IMG] code is On HTML code is Off

View Your Warnings | New Posts | Latest News | Latest Threads | Shoutbox

Forum Jump

Free IT White Papers!

Accelerating Trading Partner Performance
One in five. That's how many partner transactions have at least one error. That is an amazing statistic, particularly given the extraordinary leaps in innovation across the global supply chain during the past two decades. Download this white paper to learn more.

Competing on Analytics
This Tech Analysis is designed to help identify characteristics shared by analytics competitors, and includes information about 32 organizations that have made a commitment to quantitative, fact-based analysis.

Cost Effective Scaling with Virtualization and Coyote Point Systems
An overview of the industry trend toward virtualization, how server consolidation has increased the importance of application uptime and the steps being taken to integrate load balancing technology with virtualized servers.

Five Checkpoints to Implementing IP Telephony
Implementation planning for IP PBX software and IP telephony has become vital as businesses replace discontinued legacy PBX phone systems. This informative whitepaper outlines five "checkpoints" for any implementation plan that will help make IP communications a successful proposition.

Hosted Email Security: Staying Ahead of New Threats
In the last two years, email has become a fierce battleground between the nefarious forces of spam and malware, and the heroes of messaging protection. The spam volumes increased alarmingly every month, bringing clever new forms of phishing and virus propagation attacks.

More Free IT White Papers!