4wt667KNXI
3J8fnObHjG
XZKB9rnvZU
Rx1VJu8sx5
MiAo8FaCOx
JB2RC2oFnq
上面六组字符串，是随机变化的，现在我想获取这六组字符串的第一个数字，如上面的六组我想最后得到：439182，请问应该怎么写代码？
$s = <<<TXT4wt667KNXI3J8fnObHjGXZKB9rnvZURx1VJu8sx5MiAo8FaCOxJB2RC2oFnqTXT;$arr = preg_split('/[\s]+/s', $s);$str = '';foreach($arr as $v){ preg_match('/\d/', $v, $m); $str .= $m[0];}echo $str;
$s =<<< TXT4wt667KNXI3J8fnObHjGXZKB9rnvZURx1VJu8sx5MiAo8FaCOxJB2RC2oFnqTXT;preg_match_all('/(\d+?).*$/m', $s, $m);echo join('', $m[1]);
Advantages of plc control system
delete folder in linux
Introduction to article tag attributes
How to type the inscription on the coin circle?
What does MLM coin mean? How long does it usually take to crash?
Common usage of Array.slice
Top ten digital currency exchanges
Windows 10 activation key list
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
