j.smith1981 Posted May 6, 2011 Share Posted May 6, 2011 I was fiddling around with php and concerning data in a mysql database. All I was wanting to understand was being able to remove values with cheking multiple items in outputted html list. One that reads a set of values from a database, then displays a check box allowing the user to delete such values, that's it basically, here is my script I used to do it: <?php function deleteRow($value) { $sql = "DELETE FROM checkbox WHERE value LIKE '$value'"; $result = mysql_query($sql); } if(array_key_exists('delete', $_POST)){ if(isset($_POST['value'])) { $count = count($_POST['value']); $connect = mysql_connect('localhost', 'jeremy', 's56pj989'); if($connect) { $select_db = mysql_select_db('test'); if($select_db) { for($i=0; $i<$count; $i++){ // print 'This is item = '.$_POST['value'][$i]; // outputs fine if(strlen($_POST['value'][$i]) > 0) { deleteRow($_POST['value'][$i]); } } } } } } ?> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html lang="en"> <head> <title></title> </head> <body> <form id="myform" name="myform" action="<?=$_SERVER['PHP_SELF']; ?>" method="post"> <?php if($_SERVER['REMOTE_ADDR'] == '192.168.0.2') { // printf("<p>Yes you have connected to this script successfully!</p>"); $connect = mysql_connect('localhost', 'mydbuser', 'mydatabasepassword'); if($connect) { // printf("<p>You have now connected to the database, well done!</p>"); $select_db = mysql_select_db('test'); if($select_db) { // printf("<p>Selected database now</p>"); $sql = 'SELECT * FROM checkbox'; $result = mysql_query($sql); if($result) { if(mysql_num_rows($result)>0){ while($row = mysql_fetch_assoc($result)) { printf("%s <input type=\"checkbox\" name=\"value[]\" value=\"%s\">\n<br />\n", $row['value'], $row['value']); } } else { printf("<p>No rows in system!</p>"); } } } } } ?> <input type="submit" id="delete" name="delete" value="Delete" /> </form> </body> </html> There must be a better way shouldn't there? I am not too concerned with error checking, ie if result of removing the values doesnt work, since I will just use this as an example of how to do this. Going on from that, how would I allow it to update a set of say changed values, just purely out of interest, pretty happy since it works though this script. But I was also wondering if there's some easy way of updating a set of values perhaps? Hmm good though and I look forward to any replies, Jeremy. Quote Link to comment Share on other sites More sharing options...
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