PHP(URL)匹配正则表达式问题

时间:2012-12-28 07:42:39

标签: php regex url

我正在寻找一个正则表达式来匹配给定的内容,其中包含类似的内容     "/unknownnumber/knownstring1-unknownstring.html"
 为了将它与PHP重定向到其他新的URL,如
    "/unknownnumber/knownstring2-unknownstring"以保持Google索引网址有效。

我使用了下一个语句,但是$do_match返回0,所以我做错了什么......
有人可以用我的正则表达式帮助我吗?

$myURL = "/unknownnumber/knownstring1-unknownstring.html";
$do_match = preg_match('~"([0-9]+)/knownstring1-(.*?)$.html"~', $myURL, $matches);

4 个答案:

答案 0 :(得分:2)

点(。),短划线( - )是具有特殊含义的元字符。

如果'unknownumber'是你的字符串的数字部分,那么regexp模式将会像这样:

$do_match = preg_match('/\/(\d+)\/knownstring1\-([^\.]+)\.html/', $input, $matches);

答案 1 :(得分:2)

$是行尾标记。你需要把它放在正则表达式的末尾,也意味着你需要逃避它的文字.

preg_match('~"([0-9]+)/knownstring1-(.*?)\.html"$~'....

答案 2 :(得分:1)

$myURL = "/unknownnumber/knownstring1-unknownstring.html";
if(preg_match('#"/(\d+)/knownstring1-(.*)\.html"#', $myURL, $matches))
    var_dump($matches);

输出:

php > $exp = '#"/(\d+)/knownstring1-(.*)\.html"#';
php > $str = '"/23421/knownstring1-unknownstring.html"';
php > if(preg_match($exp, $str, $matches)) var_dump($matches); else echo 'nope' .     PHP_EOL;
array(3) {
  [0]=>
  string(40) ""/23421/knownstring1-unknownstring.html""
  [1]=>
  string(5) "23421"
  [2]=>
  string(13) "unknownstring"
}
php > 

答案 3 :(得分:0)

尝试一下:

$myURL = "/123/knownstring1-unknownstring.html";
$do_matches = preg_match('#\/(\d+)\/(.*)\-(.*)\.html#', $myURL, $matches);
print_r($matches);

print_r输出:

Array
(
    [0] => /123/knownstring1-unknownstring.html
    [1] => 123
    [2] => knownstring1
    [3] => unknownstring
)