如何在一个html表中显示两个php数组（不包括重复项）

Question

I have two arrays in my php script, let's suppose:

foreach( $orders_this_week as $this_week ){ 
    echo $this_week->day_of_week;
    echo $this_week->average_order;

    }

and the second one is

foreach( $orders_last_week as $last_week ){ 
    echo $last_week->day_of_week;
    echo $last_week->average_order;

    }

I want to display the above arrays result in 3 columns table, the first column will contain the day of the week, eg:

$last_week->day_of_week or $this_week->day_of_week

and will not be repeated, means if $last_week->day_of_week has sunday and also $this_week->day_of_week has sunday, then there will be one sunday in first column of HTML table.

In second column there will be $this_week->average_order corresponding to it's $this_week->day_of_week , and similarly in third column there will be $last_week->average_order corresponding to it's $this_week->day_of_week .

general example: let $this_week has {[sunday, monday],[5,4]} and $ last_week has { [sunday, tuesday], [3,5]} so the output html table will be looking like

 <table border="1" width="300px"> <tr> <th>Sunday</th> <td>5</td> <td>3</td> </tr> <tr> <th>monday</th> <td>4</td> <td></td> </tr> <tr> <th>tuesday</th> <td></td> <td>5</td> </tr> </table> 

How could this be done?

Answer 1

You can create an array, indexed on day, and fill it with the correct values, then iterate the array to build you html table:

$days = [
    'Monday'=>[],
    'Tuesday'=>[],
    'Wednesday'=>[],
    //... rest of the days here
];
foreach( $orders_this_week as $this_week ){
    $days[$this_week->day_of_week]['this_week']=$this_week->average_order;
}

foreach( $orders_last_week as $last_week ){
    $days[$last_week->day_of_week]['last_week']=$last_week->average_order;
}
?>
<table>
    <?php foreach ($days as $day => $value): if(!empty($value)):?>
        <tr>
            <td><?php echo $day;?></td>
            <td><?php echo isset($value['this_week'])?$value['this_week']:''?></td>
            <td><?php echo isset($value['last_week'])?$value['last_week']:''?></td>
        </tr>
    <?php endif; endforeach;?>
</table>