我有以下字符串:
"http://add.co" id="num_1"
如何从此字符串中仅获取"http://add.co"
?
我尝试使用模式:
^http:\/\/(+s)*
答案 0 :(得分:2)
你可以使用这个几乎捕获你网址的正则表达式^"http:\/\/[^"]+(?=")
。
String : "http://add.co" id="num_1"
Matches : "http://add.co
您可以在比赛中追加最后"
来修复它。也许有人可以编辑我的正则表达式以包含最后一个"
。
答案 1 :(得分:1)
像这样:
1)explode()
函数根据分隔符将字符串分解为数组。
2)。preg_replace()
替换与定义的正则表达式匹配的字符串的包含。
$string = '"http://add.co" id="num_1"';
$array = explode(':',$string);
echo preg_replace('/\"/','',$array[0]);
输出:
http
和
$string = '"http://add.co" id="num_1"';
$array = explode(' ',$string);
echo preg_replace('/\"/','',$array[0]);
输出:
http://add.co
答案 2 :(得分:1)
@echo off
rem // Change to the working directory `C:\` once:
pushd "C:\" || exit /B 1 & rem/ ("C:\" is the root directory of drive "C:")
rem // Ensure `OldDir.txt` exists by appending nothing:
>> "OldDir.txt" rem/
rem // Create new log file `NewDir.txt`:
> "NewDir.txt" dir /B "C:\Spektra\Gelen"
rem // Process all newly added items in `NewDir`:
for /F "eol=| delims=" %%F in ('
findstr /V /X /I /G:"OldDir.txt" "NewDir.txt"
') do (
rem // Do whatever you want with each file in `%%F`:
unzip "%%F" -d "C:\some\destination\folder"
)
rem // Move new log file onto old one, suppress report message:
> nul move /Y "NewDir.txt" "OldDir.txt"
rem // Restore previous working directory:
popd
O / P
http://add.co //在我的机器上测试
答案 3 :(得分:1)
有几种方法可以达到你想要的效果:
使用preg_match:
$str = '"http://add.co" id="num_1"';
preg_match('/^"(.*?)"/', $str, $matches);
echo $matches[1];
$str = '"http://add.co" id="num_1"';
$url = str_replace("\"", "", explode(" ", $str)[0]);
echo $url;