PHP从字符串中提取单词[关闭]

Question

In PHP I have a string like this:

$string = "frame= 7840 fps= 53 q=0.0 size=  651693kB time=00:04:19.99 bitrate=20533.9kbits/s eta=00:00:22.63"

I need to extract the number 7840 into its own string. The problem is the number 7840 can be any number, like 1 or 2034321. The point is, whatever number is after frame= needs to be extracted to its own string. In PHP how would I accomplish this?

Answer 1

here is regex the right tool:

if (preg_match("#frame=\s*(\d+)#", $string, $match)) {
    $number = $match[1];
}