php正则字符串提取preg_match_all,output multiple line

<?php  
    $pattern = "/<[^>]+>(.*)<\/[^>]+>/U";
    $subject=
<<<EOF
<b>example1</b><div align = left>this is a test</div><div>how are you</div><div>how2332ou</div>
<b>example2</b><div align = left>3this is a test</div><div>how are you</div><div>444how2332ou</div>
EOF;
    if(preg_match_all($pattern,$subject,$arr)){
       
        foreach($arr[1] as $k=>$v){
            print_r($arr[1][$k]);
            print_r('<br />');
        }
    }
    else{
    echo("匹配失败");
    }  
?>

输出结果：

example1
this is a test
how are you
how2332ou
example2
3this is a test
how are you
444how2332ou