[英]PHP (URL) matching regex issue
我正在尋找一個正則表達式來匹配給定的URL,其中包含類似
"/unknownnumber/knownstring1-unknownstring.html"
為了用PHP將其重定向到其他新網址,例如
"/unknownnumber/knownstring2-unknownstring"
使Google索引網址保持活動狀態。
我使用了next語句,但是$do_match
返回0
,所以我做錯了...
有人可以幫我做正則表達式嗎?
$myURL = "/unknownnumber/knownstring1-unknownstring.html";
$do_match = preg_match('~"([0-9]+)/knownstring1-(.*?)$.html"~', $myURL, $matches);
點(。),破折號(-)是具有特殊含義的元字符。
如果'unknownumber'是字符串的數字部分,則regexp模式如下所示:
$do_match = preg_match('/\/(\d+)\/knownstring1\-([^\.]+)\.html/', $input, $matches);
$
是行尾標記。 您需要將其放在正則表達式的末尾,也要表示文字.
你需要逃脫它。
preg_match('~"([0-9]+)/knownstring1-(.*?)\.html"$~'....
$myURL = "/unknownnumber/knownstring1-unknownstring.html";
if(preg_match('#"/(\d+)/knownstring1-(.*)\.html"#', $myURL, $matches))
var_dump($matches);
輸出:
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 >
試試看:
$myURL = "/123/knownstring1-unknownstring.html";
$do_matches = preg_match('#\/(\d+)\/(.*)\-(.*)\.html#', $myURL, $matches);
print_r($matches);
print_r輸出:
Array
(
[0] => /123/knownstring1-unknownstring.html
[1] => 123
[2] => knownstring1
[3] => unknownstring
)
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