我有一个大数组.
该数组的内容为：
Array
(
[0] => Array
(
[id] => 12
[user_id] => 1
[date] => 2013-10-21 23:01:52
[type] => 1
[quantity] => 0
[value] => 1700
)
[1] => Array
(
[id] => 13
[user_id] => 1
[date] => 2013-10-21 23:01:52
[type] => 0
[quantity] => 0
[value] => 90
)
[2] => Array
(
[id] => 16
[user_id] => 1
[date] => 2013-10-21 23:01:52
[type] => 0
[quantity] => 0
[value] => 0
[3] => Array
(
[id] => 19
[user_id] => 1
[date] => 2013-10-31 02:49:12
[type] => 0
[quantity] => 0
[value] => 0
[bills] => Array
(
[0] => Array
(
[id] => 5
[data_id] => 19
[quantity] => 10
[value] => 15
)
[1] => Array
(
[id] => 5
[data_id] => 19
[quantity] => 20
[value] => 1
)
[2] => Array
(
[id] => 5
[data_id] => 19
[quantity] => 1
[value] => 50
)
)
)
)
我想在 foreach 中显示这个数组。所以我有：
echo '<ol>';
foreach ( $this->data as $d )
{
echo '<li><strong>'.$d['name'].'</strong><br /></li>';
if ( $d['bills'] )
{
echo '<ul>';
foreach ( $d['bills'] as $b )
{
echo '<li>';
echo $b['name'];
echo '</li>';
}
echo '</ul>';
}
}
echo '</ol>';
这很简单，直到我只想显示包含键['type'] == 1的数组。我不知道我该怎么做。
在MySQL中，它只需要添加"WHERE type = 1"。我了解了 PHP 数组，如果过滤是简单的功能，我很抱歉。干杯！
如果你真的需要创建一个过滤数组，你可以使用带有回调的array_filter()：
$filtered = array_filter($this->data, function($element) {
return $element['type'] == 1;
});
否则，最简单的解决方案可能只是将这样的东西放在foreach循环的顶部：
if($d['type'] != 1) {
continue;
}
您可以使用
带有continue的简单 IF 语句来检查type是否等于 1。如果没有，您可以跳过它。
foreach ( $this->data as $d )
{
if ($d['type'] != 1) continue;