Home  >  Article  >  Backend Development  >  正则表达式 - 求助怎么写php的正则匹配

正则表达式 - 求助怎么写php的正则匹配

WBOY
WBOYOriginal
2016-06-06 20:32:411048browse

我要取出 字符串"user=asdasd; token=dwwewee; type=assdfs" 里的token值dwwewee,
php怎么写?
真的不会写。。

这样好像也不行

<code>preg_match("/(token=)(.*?)(;|$)/i","user=asdasd; token=dwwewee; type=assdfs", $matches);
foreach ($matches as $m)
{
    echo $m;echo "<br>";
}
</code>

回复内容:

我要取出 字符串"user=asdasd; token=dwwewee; type=assdfs" 里的token值dwwewee,
php怎么写?
真的不会写。。

这样好像也不行

<code>preg_match("/(token=)(.*?)(;|$)/i","user=asdasd; token=dwwewee; type=assdfs", $matches);
foreach ($matches as $m)
{
    echo $m;echo "<br>";
}
</code>

<code>(?</code>

<code>if (preg_match("/(token=)(.*?)(;|$)/i","user=asdasd; token=dwwewee; type=assdfs", $matches)) {
    print_r($matches[2]);
}
</code>

如果匹配成功,那么会把结果存放在$matches这个array中,index 0 是匹配的完整字符串,1 是你第一个括号, 2 是第二个括号,依次类推。从你的需求看,你需要的值是出现在第二个括号,所以取值 $matches[2]

<code>php</code><code>//php5.6 echo explode('=',explode(';',$str)[1])[1];//dwwewee
$arr = explode(';',"user=asdasd; token=dwwewee; type=assdfs");
$arr2 = explode('=',$arr[1]);
echo $arr2[1];//dwwewee
</code>
Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn