我有以下代码（php），它将匹配img-src并替换为新的url
$rep = array('/', '+', '(', ')');
$with = array('\/', '\+', '\(', '\)');
$match_pattern = '/<img[^<]*src\s*=\s*\"'.str_replace($rep, $with, $source_url).'\"[^>]*>/iUu';
$img_replace_str = '<img src="'.$new_url.'" />';
$post_content = preg_replace($match_pattern, $img_replace_str, $post_content);
对于具有
srchttp://www.example.com/a.jpgsrchttp://www.example.com/b.jpg?height=900我想匹配带有和不带有查询字符串的图像标签。
preg_quote()str_replace()str_replace()?$match_pattern = '/<img[^<]*src\s*=\s*\"'.preg_quote($source_url, '/').'\"[^>]*>/iUu';
使用合法的 DOM 解析器轻松直观地替换包含任何方式属性的
src<img>src<img>代码：（演示）
$html = <<<HTML
<div>
Here is an img tag with no qs <img src="http://www.example.com/a.jpg">,
an img with no src <img title="to be determined">,
and here is another with a qs <img src="http://www.example.com/b.jpg?height=900">.
Here is a <iframe src="http://www.example.com/c.jpg?foo=bar"></iframe> and
a submit button <input type="image" src="http://www.example.com/d.jpg?boo=far&what=now" alt="Submit">
</div>
HTML;
$newUrl = 'https://www.example.com/new.jpg';
$dom = new DOMDocument();
libxml_use_internal_errors(true);
$dom->loadHTML($html, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);
$xpath = new DOMXPath($dom);
foreach ($xpath->query("//img/@src") as $src) {
$src->value = $newUrl;
}
echo $dom->saveHTML();
输出（两次合格替换后）：
<div>
Here is an img tag with no qs <img src="https://www.example.com/new.jpg">,
an img with no src <img title="to be determined">,
and here is another with a qs <img src="https://www.example.com/new.jpg">.
Here is a <iframe src="http://www.example.com/c.jpg?foo=bar"></iframe> and
a submit button <input type="image" src="http://www.example.com/d.jpg?boo=far&what=now" alt="Submit">
</div>