如何在一个 foreach 循环中使用多个 preg_match

发布于 2024-10-22 19:55:58 字数 596 浏览 2 评论 0原文

我有多个 preg 匹配表达式，并且我尝试使用每个表达式来输出不同的内容。我知道如何使用 foreach 一次输出一个。但我如何回显或将它们设置为变量？

preg_match_all("/\<div class=\"merchant_info\">\s*(\<div.*?\<\/div>\s*)?(.*?)\<\/div\>/is", $res[0], $matches );

   foreach($matches[0] as $titles)
{
    echo "<div class='titles' >".$titles."</div>";
}

preg_match_all("/\<a class=\"thumb\"(.*?)\<\/a\>/is", $res[0], $matches);

   foreach($matches[0] as $thumbs)
{
    echo "<div class='thumbs' >".$thumbs."</div>";
}

我希望能够将标题和拇指一起呼应。或者我是否可以将它们设置为变量然后将其输出到其他地方？

谢谢

原文

I have multiple preg match expressions, and I'm trying to use each to output something different. I know how to use foreach to output one at a time. but how do I echo or set them a variable?

preg_match_all("/\<div class=\"merchant_info\">\s*(\<div.*?\<\/div>\s*)?(.*?)\<\/div\>/is", $res[0], $matches );

   foreach($matches[0] as $titles)
{
    echo "<div class='titles' >".$titles."</div>";
}

preg_match_all("/\<a class=\"thumb\"(.*?)\<\/a\>/is", $res[0], $matches);

   foreach($matches[0] as $thumbs)
{
    echo "<div class='thumbs' >".$thumbs."</div>";
}

I want to be able to echo the titles and thumbs together. or if i can set them as a variable and then output it somewhere else?

Thanks

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

尾戒 2024-10-29 19:55:58

试试这个，

$title = array();
$thumb = array();

$string = '';

preg_match_all("/\<div class=\"merchant_info\">\s*(\<div.*?\<\/div>\s*)?(.*?)\<\/div\>/is", $res[0], $matches );
foreach($matches[0] as $titles){

    $title[] = "<div class='titles' >".$titles."</div>";

}
preg_match_all("/\<a class=\"thumb\"(.*?)\<\/a\>/is", $res[0], $matches);
foreach($matches[0] as $thumbs){

    $thumb[] = "<div class='thumbs' >".$thumbs."</div>";

}
for($i = 0; $i < count($title); $i++){

    $string .= $title[$i] . $thumb[$i];

}

echo $string;

Try this,

$title = array();
$thumb = array();

$string = '';

preg_match_all("/\<div class=\"merchant_info\">\s*(\<div.*?\<\/div>\s*)?(.*?)\<\/div\>/is", $res[0], $matches );
foreach($matches[0] as $titles){

    $title[] = "<div class='titles' >".$titles."</div>";

}
preg_match_all("/\<a class=\"thumb\"(.*?)\<\/a\>/is", $res[0], $matches);
foreach($matches[0] as $thumbs){

    $thumb[] = "<div class='thumbs' >".$thumbs."</div>";

}
for($i = 0; $i < count($title); $i++){

    $string .= $title[$i] . $thumb[$i];

}

echo $string;

回复收藏 0 原文

翻身的咸鱼 2024-10-29 19:55:58

如果匹配列表相互关联，您可以简单地以这种方式组合它：

preg_match_all("/\<div class=\"merchant_info\">\s*(\<div.*?\<\/div>\s*)?(.*?)\<\/div\>/is", $res[0], $matches );
preg_match_all("/\<a class=\"thumb\"(.*?)\<\/a\>/is", $res[0], $second);

foreach($matches[0] as $i => $titles)
{
    echo "<div class='titles' >".$titles."</div>";
    echo "<div class='thumbs' >".$second[$i]."</div>";
}

注意第二个 preg_match_all 如何使用结果变量 $second。 $i 是第一个 $matches 数组的数字索引，但按原样用于 $第二个数组。

顺便提一句。我完全赞成使用正则表达式。但考虑到匹配的复杂性，这可能是您的代码可能受益于使用 HTML 解析器的情况之一。 phpQuery 或 QueryPath 使提取内容变得更加简单并确保标题确实属于到缩略图。

Should the list of matches correlate, you could simple combine it this way:

preg_match_all("/\<div class=\"merchant_info\">\s*(\<div.*?\<\/div>\s*)?(.*?)\<\/div\>/is", $res[0], $matches );
preg_match_all("/\<a class=\"thumb\"(.*?)\<\/a\>/is", $res[0], $second);

foreach($matches[0] as $i => $titles)
{
    echo "<div class='titles' >".$titles."</div>";
    echo "<div class='thumbs' >".$second[$i]."</div>";
}

Note how the second preg_match_all uses the result variable $second. The $i is the numeric index of the first $matches array, but is used as-is for the $second.

Btw. I'm all for using regular expressions. But seeing the complexity of the match this might be one of the cases where your code might benefit from using a HTML parser instead. phpQuery or QueryPath make it much simpler to extract the contents and ensure that the titles really belong to the thumbnails.

回复收藏 0 原文

新一帅帅 2024-10-29 19:55:58

preg_match_all("/\<div class=\"merchant_info\">\s*(\<div.*?\<\/div>\s*)?(.*?)\<\/div\>/is", $res[0], $matches[] );
preg_match_all("/\<a class=\"thumb\"(.*?)\<\/a\>/is", $res[0],  $matches[]);

foreach($matches[0][0] as $i => $titles)
{
    echo "<div class='titles' >".$titles."</div>";
    echo "<div class='thumbs' >". $matches[1][0][$i]."</div>";
}

preg_match_all("/\<div class=\"merchant_info\">\s*(\<div.*?\<\/div>\s*)?(.*?)\<\/div\>/is", $res[0], $matches[] );
preg_match_all("/\<a class=\"thumb\"(.*?)\<\/a\>/is", $res[0],  $matches[]);

foreach($matches[0][0] as $i => $titles)
{
    echo "<div class='titles' >".$titles."</div>";
    echo "<div class='thumbs' >". $matches[1][0][$i]."</div>";
}

回复收藏 0 原文

~没有更多了~