dongluolie3487 2014-10-30 14:18
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替换HTML代码块中的单词而不更改HTML

Let's say I have block of HTML where I want to do a find and replace on the content before echoing out to the screen.

How do I ensure I don't change the HTML but just change the content (in PHP).

For example, if I had this:

<div class='Hello'>Hello</div>

and I wanted to replace all the 'Hello' words in the content with 'Hi' I would want to get this result:

<div class='Hello'>Hi</div>

At the moment I am using preg_replace, e.g. 

$new_code = preg_replace(array("/Hello/"), array("Hi"), $code);

But this would give me the result

<div class='Hi'>Hi</div>
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  • duanji1026 2014-10-30 18:11
    关注

    Don't use regex to find text in HTML use a DOM parser instead:

    You could use DomDocument but be careful it will do strange things with partial HTML, but here's an example to get you going:

    $dom = new DOMDocument();
$dom->loadHTML("<html><body><p>Hello</p></body></html>");

$els = $dom->getElementsByTagName('*');

foreach ( $els as $el ) {

    if (preg_replace("/Hello/","Hi",$el->nodeValue))
    {
        $el->nodeValue =preg_replace("/Hello/","Hi",$el->nodeValue);
    }

} 

echo $dom->saveHTML();

    or Simple HTML DOM may meet your needs:

    Example from site:

    $html = str_get_html('<div class='Hello'>Hello</div>');

$html->find('div', 0)->innertext = 'Hi';

echo $html;
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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