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正则表达式 - 求助怎么写php的正则匹配

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Release: 2016-06-06 20:32:41
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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>
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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 $m;echo "<br>";
}
</code>
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<code>(?</code>
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<code>if (preg_match("/(token=)(.*?)(;|$)/i","user=asdasd; token=dwwewee; type=assdfs", $matches)) {
    print_r($matches[2]);
}
</code>
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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>
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