Question

// ReSharper disable once UnusedMember.Global

第1行正在打印所有记录，但第2行只打印一条记录。为什么吗

Answer 1

<?php
// if your products array is like this then it will result successfully
$array1 = Array
            (
                '0' => Array
                    (
                        'messageId' => 9,
                        'userId' => 47,
                        'petId' => 68,
                        'message' => 'how hello',
                        'senderId' => 48,
                        'senderPetId' => 66,
                        'messageCreateTime' => '2015-07-31 11:44:59'
                    ),
                '1' => Array
                    (
                        'messageId' => 8,
                        'userId' => 49,
                        'petId' => 69,
                        'message' => 'pppppppppp',
                        'senderId' => 48,
                        'senderPetId' => 67,
                        'messageCreateTime' => '2015-07-31 11:15:16'
                    ),
                '2' => Array
                    (
                        'messageId' => 6,
                        'userId' => 48,
                        'petId' => 67,
                        'message' => 'gggg',
                        'senderId' => 49,
                        'senderPetId' => 69,
                        'messageCreateTime' => '2015-07-31 11:13:42'
                    ),                  
                '3' => Array
                    (
                        'messageId' => 2,
                        'userId' => 48,
                        'petId' => 67,
                        'message' => 'aaaaaaaa',
                        'senderId' => 47,
                        'senderPetId' => 68,
                        'messageCreateTime' => '2015-07-31 11:15:33'
                    )

            );

?>
<table border="1">
<?php foreach($array1 as $product){ 
?>
<tr>
    <td align="center"><?php echo $product['messageId'] ?></td>
    <td align="center"><?php echo $product['userId'] ?></td>
    <td align="center"><?php echo $product['senderId'] ?></td>
    <td align="center"><?php echo $product['messageCreateTime'] ?></td>
    <td align="center">Edit / Delete</td>               
</tr>
<?php } exit;?>
</table>

Answer 2

其实朋友的问题在我的变量中。 <{1}}在我$product时返回两个数组行和行，然后打印全部。

Answer 3

In [37]: s*= 1000

In [38]: timeit s[:2]+"."+s[2:]
1000000 loops, best of 3: 860 ns per loop

In [39]: timeit r.sub(r"\1.",s,1)
 100000 loops, best of 3: 6.73 µs per loop

foreach在echo中制造麻烦

3 个答案: