我正在寻找使用 PHP 中的起始标记和结束标记来查找字符串的中间部分。
$str = 'Abc/hello@gmail.com/1267890(A-29)';
$agcodedup = substr($str, '(', -1);
$agcode = substr($agcodedup, 1);
agcode
的最终预期值:
$agcode = 'A-29';
答案 0 :(得分:4)
您可以使用preg_match
$str = 'Abc/hello@gmail.com/1267890(A-29)';
if( preg_match('/\(([^)]+)\)/', $string, $match ) ) echo $match[1]."\n\n";
输出
A-29
你可以在这里查看
http://sandbox.onlinephpfunctions.com/code/5b6aa0bf9725b62b87b94edbccc2df1d73450ee4
基本上正则表达式说:
\(
打开Paren literal ( .. )
[^)]+
以外的所有内容关闭Paren )
\)
关闭Paren literal 哦,如果你真的把心放在substr
上,你就去了:
$str = 'Abc/hello@gmail.com/1267890(A-29)';
//this is the location/index of the ( OPEN_PAREN
//strlen 0 based so we add +1 to offset it
$start = strpos( $str,'(') +1;
//this is the location/index of the ) CLOSE_PAREN.
$end = strpos( $str,')');
//we need the length of the substring for the third argument, not its index
$len = ($end-$start);
echo substr($str, $start, $len );
OUPUTS
A-29
你可以在这里测试一下
http://sandbox.onlinephpfunctions.com/code/88723be11fc82d88316d32a522030b149a4788aa
如果是我,我会对两种方法进行基准测试,看看哪种方法更快。
答案 1 :(得分:0)
这对你有帮助。
function getStringBetween($str, $from, $to, $withFromAndTo = false)
{
$sub = substr($str, strpos($str,$from)+strlen($from),strlen($str));
if ($withFromAndTo) {
return $from . substr($sub,0, strrpos($sub,$to)) . $to;
} else {
return substr($sub,0, strrpos($sub,$to));
}
$inputString = "Abc/hello@gmail.com/1267890(A-29)";
$outputString = getStringBetween($inputString, '(', ')');
echo $outputString;
//output will be A-29
$outputString = getStringBetween($inputString, '(', ')', true);
echo $outputString;
//output will be (A-29)
return $outputString;
}