Question

我有两个foreach循环：第一个：

        foreach ($items as $key => $item) 
        {   
        $keywords = explode(' ', $qsvarus);
        $title[$key] = preg_replace('/\b('.implode('|', $keywords).')\b(?![^<]*[>])/i', '<b>$0</b>', $title[$key]);
        $infoo[$key] = preg_replace('/\b('.implode('|', $keywords).')\b(?![^<]*[>])/i', '<b>$0</b>', $infoo[$key]);
        echo '<tr><td>'.$title[$key].$infoo[$key].$item.'</tr></td>';
}

第二个：

foreach ($linkai as $key => $linkas) {
    $i++;
    $a1 = $linkas[1];
$a2 = str_replace("download/", "files/", $a1);
$a3 = str_replace("&","&amp;", $a2);
$a4 = str_replace("amp;nbsp;","nbsp;", $a3);
echo "<div class=\"bgframe".str_replace("/i/", "/IMG/", $a4)."</div></div>";
}

问题是如何使这两个循环显示如下结果：

Result1 from Loop1
Result1 from Loop2
Result2 from Loop1
Result2 from Loop2
Result3 from Loop1
Result3 from Loop2
And so on...

而不是：

Result1 from Loop1
Result2 from Loop1
Result3 from Loop1
...
Result1 from Loop2
Result2 from Loop2
Result3 from Loop2

由于

Answer 1

您可以使用MultipleIterator：

$m = new MultipleIterator();
$m->attachIterator(new ArrayIterator($items), 'item');
$m->attachIterator(new ArrayIterator($linkai), 'linkas');

foreach ($m as $unit) {
    // $unit['item'] contains an entry from $items
    // $unit['linkas'] contains an entry from $linkai

    // your logic here
}

Answer 2

显而易见的解决方案：

$output1 = array();
$output2 = array();

foreach ($items as $key => $item) 
{   
    $keywords = explode(' ', $qsvarus);
    $title[$key] = preg_replace('/\b('.implode('|', $keywords).')\b(?![^<]*[>])/i', '<b>$0</b>', $title[$key]);
    $infoo[$key] = preg_replace('/\b('.implode('|', $keywords).')\b(?![^<]*[>])/i', '<b>$0</b>', $infoo[$key]);
    $output1[] = '<tr><td>'.$title[$key].$infoo[$key].$item.'</tr></td>';
}

foreach ($linkai as $key => $linkas) {
    $i++;
    $a1 = $linkas[1];
    $a2 = str_replace("download/", "files/", $a1);
    $a3 = str_replace("&","&amp;", $a2);
    $a4 = str_replace("amp;nbsp;","nbsp;", $a3);
    $output2[] = "<div class=\"bgframe".str_replace("/i/", "/IMG/", $a4)."</div></div>";
}

$output = array_map( null, $output1, $output2 );
foreach ( $output as $lines ) {
    $lines = array_filter( $lines );
    foreach ( $lines as $line ) {
        echo $line;
    }
}

Answer 3

最好的答案可能来自杰克，但我认为我的解决方案很有趣。我还试图改进你的代码：

do {
    if ($item = current($items)) {
        $key = key($items);
        $keywords = str_replace(' ', '|');
        list($infoo_str, $title_str) = preg_replace(
            "/\b({$keywords})\b(?![^<]*[>])/i",
            '<b>$0</b>',
            array($infoo[$key], $title[$key])
        );

        echo "<tr><td>{$infoo_str}{$title_str}{$item}</tr></td>";

        next($items);
    }

    if ($linkas = current($linkai)) {
        $characters = array('download/', '&', 'amp;nbsp;', '/i/');
        $replacements = array('files/', '&amp;', '&nbsp;', '/IMG/');
        $linkas = str_replace($characters, $replacements, $linkas);

        echo "<div class='bgframe{$linkas}'</div></div>";

        next($linkai);
    }
} while ($item or $linkas);

结合两个foreach循环

3 个答案: