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如何在单个回声中组合多个 foreach

how to combine multiple foreach in single echo?

本文关键字：组合 foreach 回声 单个 | 更新日期: 2023-09-27
<?php
include 'simple_html_dom.php';  
// Create DOM from URL 
$html = file_get_html('http://some site. com/'); ?>
<?php
foreach($html->find('a.cellMainLink') as $title) 
echo '<div class="title"><table class="title" cellspacing="0" cellpadding="0"><tr>
    <td style="font-size:12px;">'.$title->plaintext.'</td></tr></table></div>'; 
?>
<?php 
    foreach($html->find('td.nobr') as $size)
    echo '<div class="size"><table class="size" cellspacing="0" cellpadding="0"><tr>
    <td>'.$size.'</td></tr></table></div>'; 
    ?>
<?php 
foreach($html->find('td.green') as $seeds) 
echo '<div class="seeds"><table class="seeds" cellspacing="0" cellpadding="0"><tr> <td>'.$seeds.'</td></tr></table></div>'; ?>
<?php 
foreach($html->find('td.red') as $leechs) 
echo '<div class="leechs"><table class="leechs" cellspacing="0" cellpadding="0"><tr> <td>'.$leechs.'</td></tr></table></div>'; ?>
<?php 
foreach($html->find('strong a[1]') as $category) 
echo '<div class="cat"><table class="cat" cellspacing="0" cellpadding="0"><tr><td>'.$category->plaintext.'</td></tr></table></div>'; ?>
<?php 
foreach($html->find('a[class=idownload icon16]') as $down) 
echo '<div style="font-size:12px">'.$down->href.'</div><br />'; ?>
现在结果在多个回显中

..我希望所有这些结果在一个回显中，然后我将结果存储到我的数据库中。

在 php 变量中使用 .=。它是串联赋值运算符。

<?php
include 'simple_html_dom.php';  // Create DOM from URL 
$html = file_get_html('http://some site. com/');
$what_you_echo = "";
?>
<?php
foreach($html->find('a.cellMainLink') as $title) 
 $what_you_echo .= '<div class="title"><table class="title" cellspacing="0" cellpadding="0"><tr>
    <td style="font-size:12px;">'.$title->plaintext.'</td></tr></table></div>'; 
?>
<?php 
    foreach($html->find('td.nobr') as $size)
    $what_you_echo .= '<div class="size"><table class="size" cellspacing="0" cellpadding="0"><tr>
    <td>'.$size.'</td></tr></table></div>'; 
    ?>
<?php 
foreach($html->find('td.green') as $seeds) 
$what_you_echo .=  '<div class="seeds"><table class="seeds" cellspacing="0" cellpadding="0"><tr> <td>'.$seeds.'</td></tr></table></div>'; ?>
<?php 
foreach($html->find('td.red') as $leechs) 
$what_you_echo .=  '<div class="leechs"><table class="leechs" cellspacing="0" cellpadding="0"><tr> <td>'.$leechs.'</td></tr></table></div>'; ?>
<?php 
foreach($html->find('strong a[1]') as $category) 
$what_you_echo .=  '<div class="cat"><table class="cat" cellspacing="0" cellpadding="0"><tr><td>'.$category->plaintext.'</td></tr></table></div>'; ?>
<?php 
foreach($html->find('a[class=idownload icon16]') as $down) 
$what_you_echo .=  '<div style="font-size:12px">'.$down->href.'</div><br />'; ?>
<?php echo $what_you_echo; ?>

您可以通过删除以下大量<?php来设置代码样式：

<?php
include 'simple_html_dom.php';  // Create DOM from URL
$html = file_get_html('http://some site. com/');
$what_you_echo = "";
foreach($html->find('a.cellMainLink') as $title) 
$what_you_echo .= '<div class="title"><table class="title" cellspacing="0" cellpadding="0"><tr><td style="font-size:12px;">'.$title->plaintext.'</td></tr></table></div>'; 
foreach($html->find('td.nobr') as $size)
$what_you_echo .= '<div class="size"><table class="size" cellspacing="0" cellpadding="0"><tr><td>'.$size.'</td></tr></table></div>'; 
foreach($html->find('td.green') as $seeds) 
$what_you_echo .=  '<div class="seeds"><table class="seeds" cellspacing="0" cellpadding="0"><tr> <td>'.$seeds.'</td></tr></table></div>';
foreach($html->find('td.red') as $leechs) 
$what_you_echo .=  '<div class="leechs"><table class="leechs" cellspacing="0" cellpadding="0"><tr> <td>'.$leechs.'</td></tr></table></div>';
foreach($html->find('strong a[1]') as $category) 
$what_you_echo .=  '<div class="cat"><table class="cat" cellspacing="0" cellpadding="0"><tr><td>'.$category->plaintext.'</td></tr></table></div>';
foreach($html->find('a[class=idownload icon16]') as $down) 
$what_you_echo .=  '<div style="font-size:12px">'.$down->href.'</div><br />';
echo $what_you_echo; ?>

使用变量，并附加值。

<?php
$out = '';
include 'simple_html_dom.php'; 
// Create DOM from URL
$html = file_get_html('http://some site. com/');
foreach ($html->find('a.cellMainLink') as $title) {
    $out .= '<div class="title"><table class="title" cellspacing="0" cellpadding="0"><tr>
    <td style="font-size:12px;">'.$title->plaintext.'</td></tr></table></div>';
}
foreach ($html->find('td.nobr') as $size) {
    $out .= '<div class="size"><table class="size" cellspacing="0" cellpadding="0"><tr>
    <td>'.$size.'</td></tr></table></div>';
}
foreach ($html->find('td.green') as $seeds) {
    $out .= '<div class="seeds"><table class="seeds" cellspacing="0" cellpadding="0"><tr>
    <td>'.$seeds.'</td></tr></table></div>';
}
foreach ($html->find('td.red') as $leechs) {
    $out .= '<div class="leechs"><table class="leechs" cellspacing="0" cellpadding="0"><tr>
    <td>'.$leechs.'</td></tr></table></div>';
}
foreach ($html->find('strong a[1]') as $category) {
    $out .= '<div class="cat"><table class="cat" cellspacing="0" cellpadding="0"><tr>
    <td>'.$category->plaintext.'</td></tr></table></div>';
}
foreach ($html->find('a[class=idownload icon16]') as $down) {
    $out .= '<div style="font-size:12px">'.$down->href.'</div><br />';
}
echo $out;
?>

我不确定，但也许是这个？

<?php
include 'simple_html_dom.php';  // Create DOM from URL
$html = file_get_html('http://some site. com/');
$el_arr['a.cellMainLink'] = $html->find('a.cellMainLink');
$el_arr['td.nobr'] = $html->find('td.nobr');
$el_arr['td.green'] = $html->find('td.green');
$el_arr['td.red'] = $html->find('td.red');
$el_arr['strong [1]'] = $html->find('strong [1]');
$el_arr['a[class=idownload icon16]'] = $html->find('a[class=idownload icon16]');
foreach($el_arr as $key=>$el)
{
 foreach($el as $node)
 {
  //echo your content accordingly here using $key and $node
  //$key represent the type of element and $node represent a node of that type from html
 }
}

创建一个 php 数组并将每个回显的结果放入该数组中，然后在回显数组之后 示例：

 <?php
    $results=array[];
    $our_var='';
    foreach($html->find('a.cellMainLink') as $title)
{ 
    $our_var='<div class="title"><table class="title" cellspacing="0" cellpadding="0"><tr>
        <td style="font-size:12px;">'.$title->plaintext.'</td></tr></table></div>';
    array_push($results,$our_var); 
}
    ?>

对其他人执行此操作，然后根据需要使用您的数组 

include 'simple_html_dom.php';  // Create DOM from URL 
$html = file_get_html('http://some site. com/');
$what_you_echo = "";
foreach($html->find('a.cellMainLink') as $title) 
    echo  '<div class="title"><table class="title" cellspacing="0" cellpadding="0"><tr><td style="font-size:12px;">'.$title->plaintext.'</td></tr></table></div>'; 
    $size = current($html->find('td.nobr'));
    echo '<div class="size"><table class="size" cellspacing="0" cellpadding="0"><tr>
    <td>'.$size.'</td></tr></table></div>'; 
    next($html->find('td.nobr'));

这个怎么样

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