Question

我正在尝试使用PHP执行以下操作：

$user_agent = "Mozilla/5.0 (Linux; Android 4.4.2; SAMSUNG-GT-I9505 Build/KOT49H) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.96 Mobile Safari/537.36"

if (preg_match('/android/i', $user_agent)) {
$version = preg_split('Android (.*?);', $user_agent); //regex should be `Android (.*?);` which would give me 4.4.2
}

但我真的不知道如何正确使用代码，$ version之后的部分是猜测。有人可以帮帮我吗？也许用preg_split？我希望4.4.2存储在$ version中。

Answer 1

这就是你需要的：

$user_agent = "Mozilla/5.0 (Linux; Android 4.4.2; SAMSUNG-GT-I9505 Build/KOT49H) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.96 Mobile Safari/537.36";

preg_match('/Android ([\d\.]+)/im', $user_agent, $matches);
$version = $matches[1];

echo $version;
//4.4.2

DEMO

<强>说明：

Android ([\d\.]+)
-----------------

Match the character string “Android ” literally (case insensitive) «Android »
Match the regex below and capture its match into backreference number 1 «([\d\.]+)»
   Match a single character present in the list below «[\d\.]+»
      Between one and unlimited times, as many times as possible, giving back as needed (greedy) «+»
      A “digit” (any decimal number in any Unicode script) «\d»
      The literal character “.” «\.»

使用带有PHP的regex将特定数据存储在另一个变量的变量中

1 个答案: