Question

这是我用来通过html dom php删除数据并以表格形式回显数据的代码所有数据都以完美的表格形式出现。但是我想在table.at中显示所有数据回显中只有5个最后我使用表来回显一个内容或数据我想只回显5个数据显示出来但我不知道编码这个...任何人都可以帮我这么做吗？

<?php
include('simple_html_dom.php');

$html         = file_get_html('http://www.discoverhongkong.com/us/see-do/events-festivals/events-calendar/index.jsp');
$eventRowData = array();

class eventRecord
{
    public $dates;
    public $eventDescription;
}
;
foreach ($html->find('#event_table tr') as $eventItem) {
    $eventDateArray = array();
    $oneEventData   = new eventRecord;

    foreach ($eventItem->find('.date') as $eventDate) {
        $oneDateData = array();
        $dom         = new domDocument('1.0', 'utf-8');
        $dom->loadHTML($eventDate);

        $dom->preserveWhiteSpace = true;
        $hTwo                    = $dom->getElementsByTagName('div')->item(0);
        foreach ($hTwo->childNodes as $dateElement) {
            array_push($oneDateData, $dateElement->nodeValue);

        }
        //print_r ($oneDateData);
        array_push($eventDateArray, $oneDateData);

    }

    //
    $oneEventData->dates = $eventDateArray;

    $eventData = null;
    foreach ($eventItem->find('.event_name') as $eventName) {

        $dom = new domDocument('1.0', 'utf-8');

        $dom->loadHTML($eventName);

        $dom->preserveWhiteSpace = true;
        $baseLink                = "http://www.discoverhongkong.com";

        $img = $dom->getElementsByTagName('a')->item(0);

        $relativeLink = $img->attributes->getNamedItem("href")->value;
        $eventLink    = $baseLink . $relativeLink;

        $eventData = '<strong><a href="' . $eventLink . '" title="' . $img->textContent . '">' . $img->textContent . '</a></strong><br />';

        $oneEventData->eventDescription = $eventData;
        //echo $oneEventData->eventDescription;
    }

    array_push($eventRowData, $oneEventData);
}
$arr = array_values($eventRowData);
//Print_r ($eventRowData);
//echo "----------";
//echo $arr[0]->eventDescription;
//echo "----------";
echo '</br>';




echo '<h2>Events In HongKong</h2>';
echo '<table class="table-bordered">';
echo '<tr>';
echo '<th class="abc">EVENT NAME</th>';
echo '<th>START DATE</th>';
echo '<th>END DATE</th>';
echo '</tr>';

foreach ($arr as $xyz) {
    //print_r ($xyz);
    echo '<tr>';
    echo '<td>';
    echo ($xyz->eventDescription);
    echo '</td>';


    //$mydates = array_values($xyz->dates);
    //print_r ($mydates);
    foreach ($xyz->dates as $datevalue) {
        //echo '<tr>';
        echo '<td>';
        foreach ($datevalue as $datevalueitem) {
            echo $datevalueitem;
            echo '/';
        }

        echo '</td>';

    }
    echo '</tr>';



}

echo '</table>';
?>

Answer 1

您要限制哪一个循环？无论哪一个，结构都是一样的。像这样：

$i = 0;
foreach ($collection as $item) {
    $i++;
    if ($i > 5) {
        break;
    }
    // the rest of your loop code
}

所以你基本上存储在$i（或你想要调用变量的任何东西）中循环执行次数的计数。 5次之后，无论剩下多少记录，都使用break;退出循环。

如何从html表中过滤数据

1 个答案: