php simplexml在xml元素中查找html标签的文本

Question

如何为xml下面<STRONG>标签内的所有内容设置一个php变量：

<SAVED_EXPORT>
    <metatag_description>
    Some text here? The &lt;strong&gt; Cambro High-Impact 12" x 16" Dietary Tray&lt;/strong&gt; is the solution. Comprised of high-impact, ligh
    </metatag_description>
</SAVED_EXPORT>

<?    foreach( $xml as $SAVED_EXPORT ) {

        $header = $SAVED_EXPORT->metadescription;
        echo $header[0];
        } 
?>

我希望它只是吐出：Cambro High-Impact 12" x 16" Dietary Tray 而不是所有的描述

Answer 1

尝试添加以下表达式而不是您的回声：

if (preg_match("/\&lt\;strong\&gt\;(.*?)\&lt\;\/strong\&gt\;/si", $header[0], $match) == true)
{
    echo $match[1];
}

Answer 2

使用 strpos 和 substr：

$string = 'Some text here? The <strong> Cambro High-Impact 12" x 16" Dietary     Tray</strong> is the solution. Comprised of high-impact, ligh'; 

// Tag to look for
$tag       = 'strong';
$start_tag = '<' . $tag . '>';
$end_tag   = '</' . $tag . '>';

// Determine position of search pattern <strong>
$begin = strpos($string, $start_tag);
// Add the lenght of the tag string:
$begin += strlen($start_tag);
// Determine position of search pattern </strong>
$end   = strpos($string, $end_tag);
// Calculate length:
$length = $end - $begin;

// echo the trimmed substring
echo trim(substr($string, $begin, $length));