hyperf-chat/app/Helper/StringHelper.php

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<?php
declare(strict_types=1);
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namespace App\Helper;
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/**
* 字符串助手类
* Class StringHelper
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*
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* @package App\Helper
*/
class StringHelper
{
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/**
* 替换文本中的url 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 ($matches) {
return sprintf('<a href="%s" target="_blank">%s</a>', trim($matches[0], '&quot;'), $matches[0]);
}, $str);
}
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/**
* 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
{
$pattern = "/<img.*?src=[\'|\"](.*?)[\'|\"].*?[\/]?>/";
preg_match_all($pattern, htmlspecialchars_decode($content), $match);
$data = [];
if (!empty($match[1])) {
foreach ($match[1] as $img) {
if (!empty($img)) $data[] = $img;
}
return $data;
}
return $data;
}
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}