Question

我需要知道如何遍历这个数组并获取html内容，以便我可以使用它来创建另一个数组。我拥有的数组就是：

$arr = array(
     "<span class='inside'>inside1</span> this is outside",
     "<span class='inside'>inside2</span> this is outside",
     "<span class='inside'>inside3</span> this is outside"
     );

我希望得到以下结果：

$result = array(
   "inside1",
   "inside2",
   "inside3"
   );

我尝试了以下但没有结果：

foreach ( $arr as $html){
   $dom = new DOMDocument();
   $dom->loadHTML($html);
   $xpath = new DOMXpath($dom);
   $result = $xpath->query('//span[@class="inside"]');
   echo $result
}

请帮助。

Answer 1

你可以这样做

$arr = array(
    "<span class='inside'>inside1</span> this is outside",
    "<span class='inside'>inside2</span> this is outside",
    "<span class='inside'>inside3</span> this is outside"
);

$insideHTML = array();
foreach($arr as $string) {
    $pattern = "/<span ?.*>(.*)<\/span>/";
    preg_match($pattern, $string, $matches);
    $insideHTML[] = $matches[1];
}
var_dump($insideHTML);

这将为您提供以下数组

array(3) {
  [0]=>
  string(7) "inside1"
  [1]=>
  string(7) "inside2"
  [2]=>
  string(7) "inside3"
}

Answer 2

$arr = array(
     "<span class='inside'>inside1</span> this is outside",
     "<span class='inside'>inside2</span> this is outside",
     "<span class='inside'>inside3</span> this is outside"
     );

function clean($var)
{
$var=strip_tags($var);
$chunk=explode(' ',$var);
return $chunk[0];

}    

$inside = array_map("clean", $arr);
print_r($inside);

Answer 3

对于完全示例，这可行：

$arr = array(
     "<span class='inside'>inside1</span> this is outside",
     "<span class='inside'>inside2</span> this is outside",
     "<span class='inside'>inside3</span> this is outside"
     );

$inside = array();

foreach($arr as $k=>$v){

    $expl1 = explode("<span class='inside'>", $v);

    foreach($expl1 as $k2=>$v2){

        $v2 = trim($v2);

        if(strpos($v2, '</span>') !== false){

            $expl2 = explode('</span>', $v2);

            $inside[] = $expl2[0];
        }

    }

}

print_r($inside);

产生：

Array
(
    [0] => inside1
    [1] => inside2
    [2] => inside3
)

Answer 4

如果这是您唯一需要做的事情（例如，它们总是被构造为<span>Inside</span>Oustide）您可以这样做：

$result=array();
foreach($arr as $html) {
    $result[]=substr(strstr(strstr($html,'>'),'<',true),1);
}

在php中从字符串数组中获取HTML元素

4 个答案: