php preg_split简单模式任务

Question

Im not familiar with preg_split, but i need to split string '_bsdhh__1022232781' i need to get number value so i've tried preg_split but im not sure how to properly set patter i need to split this string by "_" and appending number from 0-9 for example "_1"But it's not working, and i need to get entire number value, so there is something like substring ? i was using explode, but it's useless in case more _ values. It's seems likes a newbie question,but i need to do fast fix on server side. Looking forward for helpful reply.

$exploded = preg_split('_\[0-9]', $str); 

Answer 1

A version without regex:

$string = '_bsdhh__1022232781';
$array = explode("_", $string);

function findNumber($values) {
    foreach($values as $value) {
        if(is_numeric($value)) {
            return $value;
        }
    }
}

$number = findNumber($array);