php - 解析“abc.q=dfd”字符串的正则表达式

Question

我有字符串作为abvd.qweqw.sdfs.a=aqwrwewrwerrew. 我需要解析这个字符串并在之前=和之后得到一块=。符号.可以出现多次。那么，请告诉我，我可以使用哪个正则表达式进行解析？谢谢你。

Answer 1

Purely based on your example:

/([a-z.]+)=([a-z]+)/

Edit

But actually:

/([a-z_.]+)=(.*)/i

The results are in memory groups 1 and 2. In code:

if (preg_match('/^([a-z_.]+)=(.*)/i', $str, $matches)) {
    // $matches[1] contains part before =
    // $matches[2] contains part after =
}

Btw, I've tweaked the expression by anchoring it (using ^). If that doesn't work, just remove it from the expression.

Answer 2

You can use simple string function for that.

list($first, $second) = explode('=', 'abvd.qweqw.sdfs.a=aqwrwewrwerrew);

Answer 3

这就是完整的代码。

<?php
   if(preg_match('/([a-z.]+)=([a-z]+)/', "abvd.qweqw.sdfs.a=aqwrwewrwerrew", $matches)){
      print $matches[1]."\n";
      print $matches[2]."\n";
   }
?>