Show SINGLE RECORD with newest expiration date - php

Question

I am using a FFDB database (flat File Database).
This script works as long as $vinc field has the same value, but I have 5 different types of $vinc values R1, R2, R3, R4, R5 - if I add new record where $vinc is not R1, a blank page appears instead.
<?php
function getbyfunction($selectfn, $orderby = NULL, $includeindex = false)
{
if (!$this->isopen)
{
user_error("Database not open.", E_USER_ERROR);
return false;
}
// If there are no records, return
if ($this->records == 0)
return array();
if (!$this->lock_read())
return false;
// Read the index
$index = $this->read_index();
// Read each record and add it to an array
$rcount = 0;
foreach($index as $offset)
{
// Read the record
list($record, $rsize) = $this->read_record($this->data_fp, $offset);
// Add it to the result if the $selectfn OK's it
if ($selectfn($record) == true)
{
// Add the index field if required
if ($includeindex)
$record[FFDB_IFIELD] = $rcount;
$result[] = $record;
}
++$rcount;
}
$this->unlock();
// Re-order as required
if ($orderby !== NULL)
return $this->order_by($result, $orderby);
else
return $result;
}
function returnRec($item){
if($item)
return true;
}
$db = new FFDB();
if (!$db->open("foo"))
{
$schema = array(
array("key", FFDB_INT, "key"),
array("status", FFDB_STRING),
array("vinc", FFDB_STRING),
array("month", FFDB_STRING),
array("day", FFDB_INT),
array("year", FFDB_INT)
);
// Try and create it...
if (!$db->create("foo", $schema))
{
echo "Error creating database\n";
return;
}
}
$result = $db->getbyfunction("returnRec", "vinc");
show_rec(end($result));
function show_rec($record){
$number = $record["key"];
$Rvinc = $record["vinc"];
$Rstatus = $record["status"];
$Rday = $record["day"];
$Rmonth = $record["month"];
$Ryear = $record["year"];
$tday = getdate();
$current_year = $tday['year'];
$current_month = $tday['month'];
if (($status == ON) && ($vinc == R1) && ($month >= $current_month) && ($year == current_year)){
echo "myrecord $vinc $status $day $month $year";
}
?>
Any help?!
Thanks
Yegge, using show_rec($result[0]); it shows 1 record but instead the most recent expiration date is showing the latest expiration date:
i.e.:
1 record expire 08/01/2011
2 record expire 11/01/2011
show_rec($result[0]); is showing the record with expiration date 11/01/2011 instead of 08/01/2011
Yegge
show_rec(end($result)); worked as long as $vinc == R1 only, if adding another record where vinc is not R1 then shows a blank page, any ideas?

Answer 1

<?php
function getbyfunction($selectfn, $orderby = NULL, $includeindex = false)
{
if (!$this->isopen)
{
user_error("Database not open.", E_USER_ERROR);
return false;
}
// If there are no records, return
if ($this->records == 0)
return array();
if (!$this->lock_read())
return false;
// Read the index
$index = $this->read_index();
// Read each record and add it to an array
$rcount = 0;
foreach($index as $offset)
{
// Read the record
list($record, $rsize) = $this->read_record($this->data_fp, $offset);
// Add it to the result if the $selectfn OK's it
if ($selectfn($record) == true)
{
// Add the index field if required
if ($includeindex)
$record[FFDB_IFIELD] = $rcount;
$result[] = $record;
}
++$rcount;
}
$this->unlock();
// Re-order as required
if ($orderby !== NULL)
return $this->order_by($result, $orderby);
else
return $result;
}
function returnRec($item){
if($item)
return true;
}
$db = new FFDB();
if (!$db->open("foo"))
{
$schema = array(
array("key", FFDB_INT, "key"),
array("status", FFDB_STRING),
array("vinc", FFDB_STRING),
array("month", FFDB_STRING),
array("day", FFDB_INT),
array("year", FFDB_INT)
);
// Try and create it...
if (!$db->create("foo", $schema))
{
echo "Error creating database\n";
return;
}
}
$result = $db->getbyfunction("returnRec", "vinc");
foreach($result as $item) {show_rec($item);break;}
function show_rec($record){
$number = $record["key"];
$Rvinc = $record["vinc"];
$Rstatus = $record["status"];
$Rday = $record["day"];
$Rmonth = $record["month"];
$Ryear = $record["year"];
$tday = getdate();
$current_year = $tday['year'];
$current_month = $tday['month'];
if (($status == ON) && ($vinc == R1) && ($month >= $current_month) && ($year == current_year)){
echo "myrecord $vinc $status $day $month $year";
}
?>
i think you need to use break in loop, like above.

Answer 2

select product, expirationdate from your_table
where expirationdate > {current_date} order by expirationdate ASC limit 1
{current_date} is variable that should be passed from php or you can use mysql function instead

Answer 3

If I understood your code correctly, instead of
foreach($result as $item) {show_rec($item);break;}
//use
show_rec($result[0]); //only show the very first item in the result array
Edit: Then use this:
show_rec(end($result));

Answer 4

SOLUTION:
I just want to make sure to post the solution:
$result = $db->getall(lp_month,lp_year);
$i = 0;
foreach ($result as $row){
print_r (show_record($row));
if ($i >= 1)
break;
$i++;
}
Not a lot different from what I initially had, but print_r instead of echo did the trick:
print_r (show_record($row));
Thanks