* @link https://github.com/gzydong/hyperf-chat
*/
namespace App\Helpers;
/**
* 字符串助手类
* Class StringHelper
*
* @package App\Helper
*/
class StringHelper
{
/**
* 替换文本中的url 为 a标签
*
* @param string $str 字符串
* @return null|string|string[]
*/
public static function formatUrlLink(string $str)
{
$re = '@((https|http)?://([-\w\.]+)+(:\d+)?(/([\w/_\-.#%]*(\?\S+)?)?)?)@';
return preg_replace_callback($re, function ($matches) {
return sprintf('%s', trim($matches[0], '"'), $matches[0]);
}, $str);
}
/**
* 从HTML文本中提取所有图片
*
* @param string $content HTML文本
* @return array
*/
public static function getHtmlImage(string $content): array
{
$pattern = "//";
preg_match_all($pattern, htmlspecialchars_decode($content), $match);
$data = [];
if (!empty($match[1])) {
foreach ($match[1] as $img) {
if (!empty($img)) $data[] = $img;
}
return $data;
}
return $data;
}
}