Consecutive dateranges in PHP - php

Question

This is a follow-up question for my earlier question here:
Some help "syncing" two loops in PHP
I want to take a list of dates and show them as ranges if their date is the same or max 1 day apart.
This is the output of my database:
+-----+------------+
| uid | date |
+-----+------------+
| 39 | 2014-09-17 |
| 46 | 2014-09-18 |
| 40 | 2014-09-19 |
| 48 | 2014-09-19 |
| 45 | 2014-09-20 |
| 47 | 2014-12-05 |
+-----+------------+
This is the HTML I want to generate:
Contract from 17/09/2014 to 20/09/2014
UIDS: 39-46-40-48-45
Contract from 05/12/2014
UIDS: 47
This is my sourcecode
<?php
$output = '';
$list = array();
$lastitem = $lastdate = null;
$query = 'SELECT * FROM project_dates';
$sth = $dbh->prepare($query);
$sth->execute();
if($sth->rowCount() > 0) {
$i = 0;
while($row = $sth->fetch()) {
// CURRENT DATE
$date = new DateTime($row['date']);
// STORAGE
$item = array(
'date' => array(),
'var' => $row['uid'], // A '-' delimited variable of all the uids in the range (40-41-...)
'uids' => array() // An array of all the uids in the range
);
// IF THE DATE DIFF IS LESS THAN OR EQUAL TO ONE DAY
if ($item['date'] === $lastitem['date'] && $date->diff($lastdate)->days <= 1) {
// Problem here: looking for last date in set!
$list[$i-1]['date']['end'] = $date;
//Add current uid to the '-' delimited variable of uids of this range
$list[$i-1]['uid'] = $list[$i-1]['uid'].'-'.$item['uid'];
// Add current uid to the array of uids of this range
array_push($list[$i-1]['uids'],$item['uid']);
} else {
// Next range
$list[$i] = $item;
$list[$i]['date']['start'] = $date;
$lastitem = $item;
$lastdate = $date;
array_push($list[$i]['uids'],$item['uid']);
$i++;
}
}
}
if(count($list)){
// Show text with first date and last date of the range
$output .= 'Contract from '.$item['date']['start']->format('d/m/Y');
$output .= isset($item['date']['end']) ? ' to ' . $item['date']['end']->format('d/m/Y') : '';
$output .= '<br />Uids: '.$item['var'];
}
foreach ($list AS $item) {
// Loop over the dates in this range
$output .= $item['date'].'<br />';
}
if(count($list)) {
// Line under this range
$output .= '<hr />';
}
echo $output;
?>
For some reason, my code returns 4 ranges instead of 2. I've been trying to figure out for hours why. Can someone help me? This is the faulty HTML:
Contract from 17/09/2014 to 18/09/2014
UIDS: 39-46
Contract from 19/09/2014
UIDS: 40
Contract from 19/09/2014 tot 20/09/2014
UIDS: 48-45
Contract van 05/12/2014
UIDS: 47
Can anyone be of assistance?