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  1. PO
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    <p>This should at least get you started. Keep in mind I don't know the structure of your DB so you may have to change some things. Also this is <em>by FAR</em> not the most efficient way to do it, but it is easy to follow, you can do this in a single MySQL query instead of looping over each user id (which I show an <em>untested</em> example of see ---faster way---), but again I don't know about your DB structure so you'll have to play with it, plus this way does exactly what you do now, one at a time so hopefully it's easier to follow and you can mod it to be more efficient later. Backup your db before playing with this.</p> <p>PHP script to do what you want:</p> <pre><code>&lt;?php //put your search terms in this array $search_terms = array('yahoo', 'google', 'bing'); //conenct to your DB $db_conn = mysql_connect('yourdbhost', 'yourdbuser', 'yourdbpassword'); mysql_select_db('yourdbname', $db_conn); //query the db for each search term foreach($search_terms as $search_term) { //----slow but clear way---- $result = mysql_query("SELECT user_id FROM user WHERE EXISTS ( SELECT user_id FROM userinfo WHERE essay like '%{$search_term}%' AND user.user_id = userinfo.user_id)", $db_conn); //for eachr user id returned, delete them from your users table //as you would have done manually. I don't know about your users //table so you will have to edit this query as you see fit. while($row = mysql_fetch_array($result, MYSQL_ASSOC)) { $user_del_result = mysql_query("DELETE FROM user WHERE user_id = {$row['user_id']} LIMIT 1", $db_conn); //might want to check here to see if the query executed successfully } //----faster way---- $result = mysql_query("DELETE FROM user WHERE EXISTS ( SELECT user_id FROM userinfo WHERE essay like '%{$search_term}%' AND user.user_id = userinfo.user_id)", $db_conn); } ?&gt; </code></pre> <p>To call it periodically you need to have a look at cron jobs (<a href="http://www.unixgeeks.org/security/newbie/unix/cron-1.html" rel="nofollow">read this</a>) and then just call the PHP script periodically with something like this in your crontab (this would run once per day at midnight for instance):</p> <pre><code>0 0 * * * /path/to/php-cli /path/to/the/above/php/file.php </code></pre>
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    1. POHow to use cron, PHP and MySQL code to delete records with multiple search terms
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    1. USFunk Forty Niner
    1. USshannonman
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    1. POHow to use cron, PHP and MySQL code to delete records with multiple search terms
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      1. VTUpMod
    1. COBTW, you should be using the mysqli library for new code instead of mysql_* library calls, which is inefficient and insecure :)
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      1. USshannonman
    2. COthanks shannonman. sorry for my ignorance, where can I get more information about mysqli library in contrast to mysql_*? Your help would be really appreciated. BTW, you should be using the mysqli library for new code instead of mysql_* library calls, which is inefficient and insecure :)
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      1. USIgor Amarya
    3. COHi shannonman, I'm trying to use your script for my cron jobs but having no luck at all. the problem might be with actual path to the script, which is (* * * * * /usr/local/bin/php -q /home/gofishda/public_html/_cron/-cron-user-userinfo.php) I set it up to run every minute just to test but it's not running and there is even no email notification, which I've set up to notify me when the script runs. I'm not quite sure how to create the correct path. the one I've provided I copied from other cron tasks. if you know anything or can point me to some tutorials i would really appreciate. cheers
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      1. USIgor Amarya
 

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