Question

我试图确认一个特定的

以下是HTML的示例：

<div class="mgrRspnInline"> <div class="header"> David, Manager at The Pub, responded to this review </div> <p class="partial_entry"> <span id="response_232376288"> Thank you for taking the time to write a review and post feedback. We appreciate your comments, hope that you continue to visit us and be satisfied every time. Looking forward to seeing you again soon </span>

以下是我正在使用的代码：

$ret = $html->getElementByTagName('span');
//print_r($ret);
foreach($review_id as $value){
    if($ret->find($value)){
        echo "Yes"; 
    } else {
        echo "No";  
    }
}

$ review_id是数组IE中的审核ID列表 - response_232376288，如果找到echo Yes，我希望代码在此时执行response_232376288而不是{{1}}没有，但我得到的只是不是。

如果有人可以提供帮助吗？

Answer 1

是的，只需在循环内使用$value作为您的针，即可搜索具有相应ID的跨度：

$html_string = '
<div class="mgrRspnInline">
    <div class="header"> David, Manager at The Pub, responded to this review </div>
    <p class="partial_entry">
    <span id="response_232376288">
    Thank you for taking the time to write a review and post feedback. We appreciate your comments, hope that you continue to visit us and be satisfied every time. Looking forward to seeing you again soon
    </span>
</div>';

$html = str_get_html($html_string);
$review_id = array('response_232376288', 'response_99999999');
foreach($review_id as $value) {
    echo 'The current value is: <strong>' . $value . '</strong><br/>';
    echo 'Does it exist? <br/>';
    $span = $html->find("span#$value", 0);
    if($span != null) {
        echo 'Yes!';
    } else {
        echo 'No :) sorry';
    }
    echo '<hr/>';
}

或者，我建议你可以在这种情况下使用DOMDocument和xpath：

$html_string = '
<div class="mgrRspnInline">
    <div class="header"> David, Manager at The Pub, responded to this review </div>
    <p class="partial_entry">
    <span id="response_232376288">
    Thank you for taking the time to write a review and post feedback. We appreciate your comments, hope that you continue to visit us and be satisfied every time. Looking forward to seeing you again soon
    </span>
</div>';

$dom = new DOMDocument();
$dom->loadHTML($html_string);
$xpath = new DOMXpath($dom);

$review_id = array('response_232376288', 'response_99999999');
foreach($review_id as $value) {
    echo 'The current value is: <strong>' . $value . '</strong><br/>';
    echo 'Does it exist? <br/>';
    if($xpath->evaluate("count(//span[@id='$value'])") > 0) {
        echo 'Yes!';
    } else {
        echo 'No :) sorry';
    }
    echo '<hr/>';
}

Sample Demo

Answer 2

让我们清理一下@ ghost的回答。答案很简单：

echo $html->find('#response_232376288', 0) ? 'Yes' : 'No';

真的没有必要用一堆额外的胡扯*来混淆这么简单的答案（除非你碰巧考虑额外的胡扯我想）

PHP简单的HTML DOM解析器 - 查找跨度ID

2 个答案: