文字列を 2 つの部分に分割する解決策

文字列を 2 つの部分に分割します
先頭の www と A に従って文字列を 2 つの部分に分割します: 文字列を 2 つの文字列に分割します
$str = "www.asdfsfd.com、A:xiaohua、www.baidu.com、A:huanghuang、www.360buy.com、www.huahua.com、www.huanghuang.com、A:asdds、www.dd。 com"; この文字列を 2 つの文字列に分割すると、出力は $a="www.asdfsfd.com,www.baidu.com,www.360buy.com,www.huahua.com,www.huanghuang.com,www. .com";
$b ="A:小華、A:黄黄、A:asdds";

php、文字列処理
-----解決策---------
preg_match_all("/www.[ a-z ]*.[a-z]*/is", $str, $out);
preg_match_all("/A:[a-z]*/is", $str, $out2);
------解決策------ - ----
$str_arr =explode(',',$str);
foreach($str_arr as $key=>$val){
if(substr($val,0,3) == 'www'){
$a_str .= $val.',';
}その他{
$b_str .= $val.',';
}
}
$a = substr($a_str,0,-1);
$b = substr($b_str,0,-1);
------解法---------

$str = "www.asdfsfd.com,A:xiaohua,www.baidu.com,A:huanghuang,www.360buy.com,www.huahua.com,www.huanghuang.com,A:asdds,www.dd.com";<br />
preg_match_all("/(?:(www\..*?),<br><font color='#FF8000'>------解决方案--------------------</font><br>(A\:.*?)(?=,<br><font color='#FF8000'>------解决方案--------------------</font><br>$))/",$str,$match);<br />
$str1 = preg_replace("/,{2,}/",",",implode(",",$match[1]));<br />
echo preg_replace("/^,/","",$str1); <br />
echo "<br>";<br />
$str2 =preg_replace("/(,{2,})/",",",implode(",",$match[2])); <br />
echo preg_replace("/^,/","",$str2);

-----解決策---------

$str = "www.asdfsfd.com,A:xiaohua,www.baidu.com,A:huanghuang,www.360buy.com,www.huahua.com,www.huanghuang.com,A:asdds,www.dd.com";<br />
preg_match_all('/(www[\w.]+),?(A:\w+)?/',$str,$m);<br />
echo join(',',$m[1]);<br />
echo '<br>';<br />
echo join(',',array_diff($m[2],array('')));

------解決策----------------------

$str = "www.asdfsfd.com,A:xiaohua,www.baidu.com,A:huanghuang,www.360buy.com,www.huahua.com,www.huanghuang.com,A:asdds,www.dd.com";<br />
<br />
preg_match_all('/(www[^,]+)<br><font color='#FF8000'>------解决方案--------------------</font><br>(A:[^,]+)/', $str, $res);<br />
$a = join(',', array_diff($res[1], array('')));<br />
$b = join(',', array_diff($res[2], array('')));<br />
<br />