php正则表达式匹配出想要的结果

如何写才能把


第一集#https://iqiyi.cdn9-okzy.com/20201104/43645634255.html
第二集#https://iqiyi.cdn9-okzy.com/20201104/75676457567.html

正则匹配出#的前后生成


<a src="https://iqiyi.cdn9-okzy.com/20201104/43645634255.html">第一集</a>
<a src="https://iqiyi.cdn9-okzy.com/20201104/75676457567.html">第二集</a>

类似


$content = preg_replace("第一集#https://iqiyi.cdn9-okzy.com/20201104/43645634255.html", '<a src="$1">$2</a>\n', $content);

昨天试了一天没成功

$content="第一集#https://iqiyi.cdn9-okzy.com/20201104/43645634255.html

第二集#https://iqiyi.cdn9-okzy.com/20201104/75676457567.html";
echo $content = preg_replace("/(.*?)\#(.*?)/iU", '<a src="$2">$1</a><br>', $content);

img


$content= "第一集#https://iqiyi.cdn9-okzy.com/20201104/43645634255.html"
$content = preg_replace("(.*)#(.*)","<a src='$2'>$1</a><br>",$content);



$content = preg_replace('/^(.*?)#(.*?)$/', '<a src="$2">$1</a>\n',"第一集#https://iqiyi.cdn9-okzy.com/20201104/43645634255.html");