msg7086 · April 3, 2015 09:22
diff --git a/v2ex-181180.php b/v2ex-181180.php
 <?php
 $hash = [];

 foreach($rows as &$row) {
  $key = $row['period'] << 32 | $row['price'];
  if (isset($hash[$key]))
    $hash[$key]['num'] += $row['num'];
  else {
    unset($row['id']);
    $hash[$key] = $row;
  }
 }

 print_r($hash);
	<?php
	$hash = [];

	foreach($rows as &$row) {
	$key = $row['period'] << 32 \| $row['price'];
	if (isset($hash[$key]))
	$hash[$key]['num'] += $row['num'];
	else {
	unset($row['id']);
	$hash[$key] = $row;
	}
	}

	print_r($hash);