Form loop db insertion + javascript altering - php

Question

I basically need to check if there is an easier way to do this before I rewrite all the code. I have a fairly large form that I have each input named with []'s on the end so I can loop through via php for easy insertion.
<input type="hidden" name="currentdate[]" value="<?php echo date('mdY'); ?>">
<td><input style="width: 50px" type="text" name="jackname[]" /></td>
<td><input style="width: 20px" type="text" name="jackkey[]" /></td>
<td><input style="width: 50px" type="text" name="jackbeg[]" /></td>
<td><input style="width: 50px" type="text" name="jackend[]" /></td>
<td><input style="width: 50px" type="text" name="jackbegveh" /></td>
<td><input style="width: 50px" type="text" name="jackbegmon[]" /></td>
<td><input style="width: 50px" type="text" name="jackendveh" /></td>
<td><input style="width: 50px" type="text" name="jackendmon[]" /></td>
<td><input style="width: 50px" type="text" name="jacktx" disabled /></td>
There are quite a few more fields but you get the idea. I then use
foreach ($_POST['jackname'] as $row=>$name)
{
$jackname = $name;
$date = $_POST['currentdate'][$row];
$jackkey = $_POST['jackkey'][$row];
$jackbeg = $_POST['jackbeg'][$row];
$jackend = $_POST['jackend'][$row];
$jackbegveh = $_POST['jackbegveh'][$row];
$jackbegmon = $_POST['jackbegmon'][$row];
$jackendveh = $_POST['jackendveh'][$row];
$jackendmon = $_POST['jackendmon'][$row];
$jacktx = $_POST['jacktx'][$row];
if ($jacktx == '') {
$jacktx = '0';
}
if (empty($jackkey)) {
echo 'Skipped empty! <br />';
} else {
mysql_query("INSERT INTO `ticket_counts_jackson` VALUES('', '" . $date . "', '" . $jackname . "', '" . $jackkey . "', '" . $jackbeg . "', '" . $jackend . "', '" . $jackbegveh . "', '" . $jackbegmon . "', '" . $jackendveh . "', '" . $jackendmon . "', '" . $jacktx . "')", $mysql_link) or die(mysql_error());
echo 'Added the info the db! <br />';
}
}
I use the above to loop through the form and add it to the database. Now for my main question. I also want to add in some javascript to do a little math. Basically ($jackendveh - $jackbegveh) - ($jackendmon - $jackbegmon) and have that displayed in jacktx. Currently the only way I know of adding in the math calculations is to rename each input to a unique name and then rewrite my insert from 1 insert to 8 inserts.

Answer 1

I would add an ID to each input field like so
<td><input id="jackname" style="width: 50px" type="text" name="jackname[]" /></td>
<td><input id="jackkey" style="width: 20px" type="text" name="jackkey[]" /></td>
<td><input id="jackbeg" style="width: 50px" type="text" name="jackbeg[]" /></td>
<td><input id="jackend" style="width: 50px" type="text" name="jackend[]" /></td>
<td><input id="jackbegveh" style="width: 50px" type="text" name="jackbegveh" /></td>
<td><input id="jackname" style="width: 50px" type="text" name="jackbegmon[]" /></td>
<td><input id="jackname" style="width: 50px" type="text" name="jackendveh" /></td>
<td><input id="jackendmon" style="width: 50px" type="text" name="jackendmon[]" /></td>
<td><input id="jacktx" style="width: 50px" type="text" name="jacktx" disabled /></td>
and then using jQuery you should be able to do it like so
$(document).ready(function(){
$("input").change(function(){
var value = $("#jackendveh").val() - $("#jackbegveh").val() - $("#jackendmon").val() - $("#jackbegmon").val();
$("#jacktx").val(value);
});
});

Answer 2

i think this would be simple
// Function to save sql in array
function save_sql($table,$data,$ref)
{
if(!empty($data)) foreach($data as $k => $v) $str .= "$k = '$v',"; $str = substr($str,0,-1);
$sql = "INSERT INTO $table SET $str";
$run = mysql_query($sql) or die(mysql_error() . "-Ref# $ref");
return $run;
}
// Extract post arrays into variables
extract ($_POST);
foreach ($_POST['jackname'] as $row=>$name)
{
$jackname = $name;
$date = $currentdate[$row];
if ($jacktx[$row] == '') {
$jacktx[$row] = '0';
}
if (empty($jackkey)) {
echo 'Skipped empty! <br />';
} else {
save_sql("ticket_counts_jackson",array('date'=>$currentdata[$row],
'jackname'=>$name,'jackkey'=>$jackkey[$row],
'jackbeg'=>$jackbeg[$row], 'jackend'=>$jackend[$row])
,"An error while process your request");
}
}

Answer 3

I took from #Travis and modified his jquery to work with my situation as follows:
<script type="text/javascript">
$(document).ready(function(){
$("input").change(function(){
var value = $("#jackendveh").val() - $("#jackbegveh").val();
var valuetwo = $("#jackendmon").val() - $("#jackbegmon").val();
var valuethree = value - valuetwo;
$("#jacktx").val(valuethree);
});
});
</script>
So I will just have unique id's on each form section and have seperate jquery functions for each and use my original sql loop.