i 有数组:
$array = array(
3 => array(
'first' => 'aaa',
'second' => '111',
'third' => '!!!'
),
7 => array(
'first' => 'bbb',
'second' => '222',
'third' => '###'
),
9 => array(
'first' => 'ccc',
'second' => '333',
'third' => '^^^'
),
);
和三个变量:
$first = 'bbb';
$second = '222';
$third = '###';
或者可以是数组:
$data = array(
'first' => 'bbb',
'second' => '222',
'third' => '###'
);
我想从$array那里获取这些值的密钥。在此示例中应返回 7。
如何将此数组与$first、$second和$third或数组$data进行比较,并从具有这些值的$array中获取密钥?
试试这个:
$array = array(
3 => array(
'first' => 'aaa',
'second' => '111',
'third' => '!!!'
),
7 => array(
'first' => 'bbb',
'second' => '222',
'third' => '###'
),
9 => array(
'first' => 'ccc',
'second' => '333',
'third' => '^^^'
),
);
$data = array(
'first' => 'bbb',
'second' => '222',
'third' => '###'
);
foreach ($array as $key => $val1) {
$arr_diff = array_diff($val1, $data);
if(empty($arr_diff))
{
echo $key;
}
}
对于每个循环,你会正确回答。