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Home Backend Development PHP Tutorial php截取字符串问题!在线等 在线结贴

php截取字符串问题!在线等 在线结贴

Jun 23, 2016 pm 02:26 PM

yybb_cx.
yybb_xdf.

就像上面的字符串。我只需要_后面和.前面的字母  

比如以上两个  我需要的分别就是  cx 和 xdf   应该怎么处理?


回复讨论(解决方案)

$s=<<<htmlyybb_cx.yybb_xdf.html;preg_match_all('/_(.+?)\./s',$s,$m);print_r($m[1]);
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这是把原先的替换了吗?



$s=<<<htmlyybb_cx.yybb_xdf.html;preg_match_all('/_(.+?)\./s',$s,$m);print_r($m[1]);
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大哥我没搞过php 别搞那么复杂。

其实我要的很简单,就是说

$datas = $_POST["shujuku"]; //我这有个传送过来的字符串 赋给了 $datas 那个字符串就是yybb_xdf.这个样子的。

我现在是需要 把这个$datas按照我的要求把_和.之间的字符串截取出来 赋给一个新的变量。

preg_match('/_(.+?)\./s',$data,$m);$a=$m[1];  //$a 就是你要的变量
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preg_match('/_(.+?)\./s',$data,$m);$a=$m[1];  //$a 就是你要的变量
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大哥。。只有一个点。。。

我取的是 .之前和_之后的字母 我现在用你最后的变量$a 娶到的只有一个.

不可能吧,贴出你的代码看看。

不喜欢正则那就这样截取

$a = "yybb_cx.";$a = substr(substr($a,5),0,-1);echo $a;
Copy after login

不对不对 是我搞错了。 不应该是.之前。 只需要下划线之后的字母就可以!!!!

$a = "yybb_cx.";$a = substr($a,5);echo $a;
Copy after login

$s = 'yybb_cx.';strtok($s, '_');$a = strtok('.');echo $a; //cx
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