sum all value in foreach loop php - php

Question

<?php foreach((array)$query as $row):?>
<td><?php echo $row->date ?></td>
<td><?php echo $row->cost ?></td>
<?php endforeach ;?>
I want to sum all values in $row->cost when $row->date=02-01-2016, like this in a table
Thanks.

Answer 1

echo array_sum(array_filter(array_map(function($row){
if($row->date == '02-01-2016')
return $row->cost;
}, $array)));
You can use
array_map: to compare and skip the values for which cost is not needed to add in sum.
array_filter: and then to remove the blank indexes
array_sum: and finally to sum cost
Note: if you are getting results from database, you can simply do sum there (see below):
$db->query("SELECT SUM(costs) FROM table_name WHERE `date`='2016-01-02'");
echo $db->fetchColumn();

Answer 2

Try below code:
<?php
$total = 0;
foreach((array)$query as $row):
$date = $row->date;
$cost = $row->cost;
if(date("M-d-Y", strtotime($date))==date("M-d-Y")) {
$total = $total+$cost;
}
?>
<td><?php echo $date ?></td>
<td><?php echo $cost ?></td>
<?php endforeach; ?>
<td colspan="2"><?php echo $total; ?></td>

Answer 3

<?php
$tot = 0;
foreach( (array)$query as $row ) {
if( $row->date=='02-01-2016' ) $tot = $tot+$row->cost;
?>
<tr>
<td><?php echo $row->date ?></td>
<td><?php echo $row->cost ?></td>
</tr>
<?php } ?>
<tr><td colspan="2"><?php echo $tot; ?></td></tr>
obviously, the comparison works if $row->date is formatted as dd-mm-yyyy

Answer 4

<table border=1>
<?php
$tot = 0;
foreach($query as $row ) {
if( $row->date=='2016-01-02' ) $tot += $row->cost;
?>
<tr>
<td><?php echo $row->date ?></td>
<td><?php echo $row->cost ?></td>
</tr>
<?php } ?>
<tr><td></td><td><?php echo $total; ?></td></tr>
</table>
It will work for you exctly what u want.