Question

我要解析此示例记录：

@2013-01-19 02:45:00,1.32927,1.33029,1.32909,1.33018,464
@2013-01-19 03:00:00,1.33019,1.33142,1.33019,1.33081,637
@2013-01-19 03:15:00,1.33083,1.33129,1.33069,1.33095,425
@2013-01-19 03:30:00,1.33092,1.3317,1.33045,1.33144,500
@2013-01-19 03:45:00,1.33146,1.33211,1.33095,1.33196,480
@2013-01-19 04:00:00,1.33197,1.33291,1.33166,1.33264,593
@2013-01-19 04:15:00,1.33267,1.33308,1.33234,1.33238,366
@2013-01-19 04:30:00,1.33239,1.33278,1.33236,1.33263,335

使用这个php代码，iam尝试将每行存储在一个包含五个索引的数组中（行以逗号分隔）：

foreach($lines as $line){
    $data = explode('@', $line);
    foreach($data as $record){
        $val = explode(',',$record);
        echo '<pre>';
        print_r($val);
        echo '</pre>';
    }
}

其中 $ lines 包含记录..

但问题是，它显示：

    Array
(
    [0] => 

)
Array
(
    [0] =>  

)
Array
(
    [0] =>     

)
Array
(
    [0] => 

)
Array
(
    [0] => 

)
Array
(
    [0] => 
)
Array
(
    [0] => 2013-01-19 03:00:00
    [1] => 1.33019
    [2] => 1.33142
    [3] => 1.33019
    [4] => 1.33081
    [5] => 637

)
Array
(
    [0] => 2013-01-19 03:15:00
    [1] => 1.33083
    [2] => 1.33129
    [3] => 1.33069
    [4] => 1.33095
    [5] => 425

)

......

我不知道零（空数组）的来源。

代码有问题吗？谢谢你的帮助......

Answer 1

删除第一个@而不是将其展开：

foreach($lines as $line){
    // remove the first character
    $record = substr($line,1);
    $val = explode(',',$record);
    echo '<pre>';
    print_r($val);
    echo '</pre>';

}

@上的爆炸在您的$data数组中产生空值 - see here

Answer 2

删除$ data = explode（'@'，$ line）;如果不需要或改变你的需要

$lines[] = '2013-01-19 02:45:00,1.32927,1.33029,1.32909,1.33018,464';
    foreach($lines as $line){
        $data = explode('@', $line);
        foreach($data as $record){
            $val = explode(',',$record);
            echo '<pre>';
            print_r($val);
            echo '</pre>';
        }
    }

无论空值如何，都会在数组中爆炸和存储值

2 个答案: