foreach多维数组

问题描述

  Product1 date1 time1 
 product2 date2 time2 $ b $ product3 date3 time3 
 product4 date4 time4 
  

I一直在挣扎和挣扎，我尝试了双重的foreaches等，但不知何故，我不明白它的工作...

任何人都可以解释给我吗？数组
（
[product] =>数组
（
[


$ 0] => product1
[1] => product2
[2] => product3
[3] => product4
）

[date] => Array
（
[0] => date1
[1] => date2
[2] => date3
[3] => date4
）

[time] => Array
（
[0] => time1
[1 ] => time2
[2] =>时间3
[3] => time4
）

）

解决方案

$ p
$ b

  $ count = count（$ data ['product']）; 
（$ i = 0; $ i <$ count; $ i ++）{
 echo $ data ['product'] [$ i]。 ''。 $ data ['date'] [$ i]。 ''。$ data ['time'] [$ i]。 '< br />'; 
 
 
 
 $ b $要添加数据验证/完整性（停止 undefined index  errors），还要检查每个索引是否存在于子数组中： 
 
 
  $ count = count（$ data ['product']）; 
 for（$ i = 0; $ i <$ count; $ i ++）{
 $ date = isset（$ data ['date'] [$ i]）？ ''。 $ data ['date'] [$ i]：''; 
 $ time = isset（$ data ['time'] [$ i]）？ ''。 $ data ['time'] [$ i]：''; 
 echo $ data ['product'] [$ i]。 $日期。 $时间。 '< br />'; 
} 
  
 
How do i loop through the following array with a foreach, so it gets printed like this:
Product1 date1 time1
product2 date2 time2
product3 date3 time3
product4 date4 time4
I have been struggling and strugling, i tried double foreaches etc, but somehow i don't get it to work...
Is Anyone able to explain it to me?
Array
(
    [product] => Array
        (
            [0] => product1
            [1] => product2
            [2] => product3
            [3] => product4
        )

    [date] => Array
        (
            [0] => date1
            [1] => date2
            [2] => date3
            [3] => date4
        )

    [time] => Array
        (
            [0] => time1
            [1] => time2
            [2] => time3
            [3] => time4
        )

)
 解决方案 
Something like this should work:
$count = count($data['product']);
for ($i = 0; $i < $count; $i ++) {
    echo $data['product'][$i] . ' ' . $data['date'][$i] . ' ' .$data['time'][$i] . '<br />';
}
To add data-verification/integrity to it (to stop undefined index errors), also check if each index exists in the sub-arrays:
$count = count($data['product']);
for ($i = 0; $i < $count; $i++) {
    $date = isset($data['date'][$i]) ? ' ' . $data['date'][$i] : '';
    $time = isset($data['time '][$i]) ? ' ' . $data['time '][$i] : '';
    echo $data['product'][$i] . $date . $time . '<br />';
}
                        
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