[英]Regular expression for fixed string
I have following string. 我有以下字符串。
?page=1&sort=desc¶m=5&parm2=25
I need to check whether the enter string url is in strict format except variable value. 我需要检查输入字符串url是否是严格格式,变量值除外。 Like page=, sort=, param=, param2.
像page =,sort =,param =,param2。
Please suggest regular expression. 请建议正则表达式。 Thanks
谢谢
Maybe this : 也许这个:
\?page=\d+&sort=.+¶m=\d+¶m2=\d+
which translates to : 这意味着:
?page= followed by any digit repeated 1 or more times
?page =
followed by any digit repeated 1 or more times
&sort= followed by any character repeated 1 or more times
&sort =
followed by any character repeated 1 or more times
¶m= followed by any digit repeated 1 or more times
&param =
followed by any digit repeated 1 or more times
¶m2= followed by any digit repeated 1 or more times
&param2 =
followed by any digit repeated 1 or more times
I think Alin Purcaru 's suggestion is better 我认为Alin Purcaru的建议更好
EDIT: 编辑:
(\?|&)(page=[^&]+|sort=[^&]+|param=[^&]+|parm2=[^&]+)
This way the order doesn't matter 这样顺序无关紧要
If you care about the order of parameters, something like this: 如果你关心参数的顺序,就像这样:
\?page=[^&]+&sort=[^&]+param=[^&]+param2=[^&]+$
But Alin Purcaru is right - use the parse_str function already written to do this 但是Alin Purcaru是对的 - 使用已经编写的parse_str函数来执行此操作
You could use the following regx /\\?page=[^&]*sort=[^&]*param=[^&]*param2=/` to match: 您可以使用以下regx / \\?page = [^&] * sort = [^&] * param = [^&] * param2 = /`来匹配:
if (preg_match("/\?page=([^&]*)sort=([^&]*)param=([^&]*)param2=([^&]*)/i", $inputstr, $matches))
{
echo "Matches:";
print_r($matches); // matches will contain the params
}
else
echo "Params nor found, or in wrong order;
正则表达式将是^\\?([\\w\\d]+=[\\w\\d]+(|&))*$
只要您的值是Alpha数字,但也许您想看看过滤器是否你想验证一个网址http://www.php.net/manual/en/book.filter.php
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