To Manage Schedule in PHP foreach loop - php

Question

I am having table like below
So there are priority and sqft, i want to start manufacturing schedule (from current date) that every day 1700 SQFT will be processed, like below image
but as you can see its not working
I have tried below code
foreach($priorityArraySum as $key=>$val)
{
$totalDays=ceil($val/1700);
$cutSQFT=$val;
for($j=1;$j<=$totalDays;$j++)
{
if($cutSQFT>1700)
{
echo '1700';
$cutDate=date('Y-m-d', strtotime($cutDate. ' + 1 days'));
$cutSQFT=$cutSQFT-1700;
}
else
{
echo $cutSQFT;
$cutSQFT=$cutSQFT-$cutSQFT;
}
}
}
#Nigel, to Make this dynamic, I have changed code to below, but its not working.
$pln_qry=mysql_query("select * from tbl_mfg_schedule where ms_date='".$today."'") or die(mysql_error());
$pln_data=mysql_fetch_array($pln_qry);
$max = $pln_data['ms_po_sqft'];
$dailyLeft = $max;
$current = reset($priorityArraySum);
$output = [];
//$day = date('Y-m-d');
$day = date('Y-m-d');
while (true) {
$pln_qry=mysql_query("select * from tbl_mfg_schedule where ms_date='".$today."'") or die(mysql_error());
$pln_data=mysql_fetch_array($pln_qry);
$max = $pln_data['ms_po_sqft'];
if ( $current >= $dailyLeft ) {
//$day=date('Y-m-d', strtotime($day. ' + 1 days'));
$output[] = ["priority" => key($priorityArraySum),
"amount" => $dailyLeft,
"day" => $day
];
$day=date('Y-m-d', strtotime($day. ' + 1 days'));
$current -= $dailyLeft;
$dailyLeft = $max;
}
else {
$output[] = ["priority" => key($priorityArraySum),
"amount" => $current,
"day" => $day
];
$dailyLeft -= $current;
if ( ($current = next($priorityArraySum)) === false ) {
break;
}
}
}

Answer 1

This code uses a while() loop to create an output array of the days work. It uses $current to keep track of each item and how much is left to allocate. It also uses $dailyLeft to keep track of how much capacity is left on a particular day. It checks the two and if the current is less than the daily capacity left, it allocates a full day to that item and resets the daily capacity. If there is extra capacity for that day it allocates this item to the day and gets the next item.
The day is only incremented (using $day++) when the capacity for that day is filled...
$max = 1700;
$dailyLeft = $max;
$current = reset($priorityArraySum);
$output = [];
$day = 1;
while (true) {
// echo $current."/".$dailyLeft."=".$day.PHP_EOL;
if ( $current >= $dailyLeft ) {
$output[] = ["priority" => key($priorityArraySum),
"amount" => $dailyLeft,
"day" => $day++
];
$current -= $dailyLeft;
$dailyLeft = $max;
}
else {
$output[] = ["priority" => key($priorityArraySum),
"amount" => $current,
"day" => $day
];
$dailyLeft -= $current;
if ( ($current = next($priorityArraySum)) === false ) {
break;
}
}
}
print_r($output);