function getSimpleImg($str = '')
{
if (!empty($str)) {
$result = preg_replace("/.*<img[^>]*src[=\s\"\']+([^\"\']*)[\"\'].*/", "$1", $str);
} else {
$result = '';
}
return $result;
}
从html中提取img标签
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转载自blog.csdn.net/Mr_Yanghao/article/details/82221432
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