为了实现您的目标,可能有几种方法可以做到这一点——我选择使用数组来存储新发现的事务编号和日期。通过测试一个项是否已经在数组中,您可以声明新的变量/对象,这些变量/对象随后将在呈现的输出中使用。
<?php
$data = array(
array('transaction_number' => 'AB-0001','date' => '2018-08-01', 'item_number' => '0101010', 'desc' => 'This is a', 'variant_code' => '002', 'quantity' => '2','cost' => '2000'),
array('transaction_number' => 'AB-0001','date' => '2018-08-01', 'item_number' => '0101010', 'desc' => 'This is a', 'variant_code' => '004', 'quantity' => '3','cost' => '2000'),
array('transaction_number' => 'AB-0001','date' => '2018-08-01', 'item_number' => '0101010', 'desc' => 'This is a', 'variant_code' => '005', 'quantity' => '4','cost' => '2000'),
array('transaction_number' => 'AB-0001','date' => '2018-08-01', 'item_number' => '0101010', 'desc' => 'This is a', 'variant_code' => '006', 'quantity' => '5','cost' => '2000'),
array('transaction_number' => 'AB-0001','date' => '2018-08-01', 'item_number' => '0101010', 'desc' => 'This is a', 'variant_code' => '008', 'quantity' => '1','cost' => '2000'),
array('transaction_number' => 'AB-0002','date' => '2018-08-02', 'item_number' => '0101010', 'desc' => 'This is b', 'variant_code' => '013', 'quantity' => '2','cost' => '2000'),
array('transaction_number' => 'AB-0002','date' => '2018-08-02', 'item_number' => '0101010', 'desc' => 'This is b', 'variant_code' => '020', 'quantity' => '3','cost' => '2500'),
array('transaction_number' => 'AB-0002','date' => '2018-08-02', 'item_number' => '0101010', 'desc' => 'This is b', 'variant_code' => '022', 'quantity' => '4','cost' => '2500'),
array('transaction_number' => 'AB-0003','date' => '2018-08-03', 'item_number' => '0101010', 'desc' => 'This is c', 'variant_code' => '007', 'quantity' => '1','cost' => '2500'),
array('transaction_number' => 'AB-0003','date' => '2018-08-03', 'item_number' => '0101010', 'desc' => 'This is c', 'variant_code' => '015', 'quantity' => '7','cost' => '2500')
);
$symbol='£';
?>
<!doctype html>
<html>
<head>
<meta charset='utf-8' />
<title>HTML table based upon PHP array data</title>
<style>
table{ border:1px solid gray;font-family:calibri,verdana,arial;float:none;margin:auto; }
th{background:gray;color:white;padding:0.5rem;}
td{padding:0.5rem;border:1px dotted gray;}
td[colspan]{background:whitesmoke;}
.currency:before{
content:'<?=$symbol;?>';
color:green;
font-weight:bold;
}
</style>
</head>
<body>
<table>
<tr>
<th>transaction_number</th>
<th>date</th>
<th>item_number</th>
<th>desc</th>
<th>variant_code</th>
<th>quantity</th>
<th>cost</th>
</tr>
<?php
$trans=array();
$dates=array();
$total=new stdClass;
$total->qty=0;
$total->cost=0;
foreach( $data as $index => $a ){
/*
Transaction number & date variables
- empty unless not in array
*/
$tn='';
$dt='';
/* check if current transaction is already in the array - if not add it and create a new subtotal object */
if( !in_array( $a['transaction_number'], $trans ) ) {
/* assign `$dt` variable to newly discovered transaction and add to array */
$tn = $trans[] = $a['transaction_number'];
$subtotal=new stdClass;
$subtotal->qty=0;
$subtotal->cost=0;
}
/* Check if the date is in it's array - if not, add it */
if( !in_array( $a['date'], $dates ) ) {
/* assign `$dt` var to newly discovered date and add to array */
$dt = $dates[] = $a['date'];
}
/* update subtotals */
$subtotal->qty += floatval( $a['quantity'] );
$subtotal->cost += floatval( $a['cost'] );
/* output the table row with data including vars defined above */
printf('
<tr>
<td>%s</td>
<td>%s</td>
<td>%s</td>
<td>%s</td>
<td>%s</td>
<td>%s</td>
<td>%s</td>
</tr>', $tn, $dt, $a['item_number'], $a['desc'], $a['variant_code'], $a['quantity'], $a['cost'] );
/* Show the sub-total for current transaction number */
if( ( $index < count( $data ) - 1 && $trans[ count( $trans )-1 ] != $data[ $index + 1 ]['transaction_number'] ) or $index==count( $data )-1 ){
printf('
<tr>
<td colspan=4> </td>
<td>SUB-TOTAL</td>
<td>%s</td>
<td class="currency">%s</td>
</tr>', $subtotal->qty, $subtotal->cost );
$total->qty += floatval( $subtotal->qty );
$total->cost += floatval( $subtotal->cost );
}
}
/* Show the final totals */
printf('
<tr><td colspan=7> </td></tr>
<tr>
<td colspan=4> </td>
<td>TOTAL</td>
<td>%s</td>
<td class="currency">%s</td>
</tr>', $total->qty, $total->cost );
?>
</table>
</body>
</html>
Or a live proof of concept can hopefully be found here
