如何使用正则表达式提取尖括号之间的最后一个元素？
[英]How do I extract last element between angle brackets using regular expressions?
问题描述
How do I extract last element between angle brackets using regular expressions? 
如何使用正则表达式提取尖括号之间的最后一个元素？ The last element is the currency, I only need GBP or USD . 最后一个元素是货币，我只需要GBP或USD 。
<ABZ>-<BOS>-<Mon Dec 28 11:20:00 UTC 2015>-<Mon Dec 28 18:05:00 UTC 2015>-<EI>-<3241>-<EI>-<139>-<USBR>-<ROUND>-<GBP>
<ABZ>-<BOS>-<Mon Jan 04 11:20:00 UTC 2016>-<Mon Jan 04 18:05:00 UTC 2016>-<EI>-<3241>-<EI>-<139>-<NONE>-<ONEWAY>-<GBP>
<ABZ>-<BOS>-<Mon Jan 04 11:20:00 UTC 2016>-<Mon Jan 04 18:05:00 UTC 2016>-<EI>-<3241>-<EI>-<139>-<NONE>-<ROUND>-<USD>
<ABZ>-<BOS>-<Mon Jan 04 11:20:00 UTC 2016>-<Mon Jan 04 18:05:00 UTC 2016>-<EI>-<3241>-<EI>-<139>-<NSNS>-<ROUND>-<GBP>
<ABZ>-<BOS>-<Mon Jan 04 11:20:00 UTC 2016>-<Mon Jan 04 18:05:00 UTC 2016>-<EI>-<3241>-<EI>-<139>-<USBC>-<ONEWAY>-<GBP>
<ABZ>-<BOS>-<Mon Jan 04 11:20:00 UTC 2016>-<Mon Jan 04 18:05:00 UTC 2016>-<EI>-<3241>-<EI>-<139>-<USBC>-<ROUND>-<GBP>
<ABZ>-<BOS>-<Mon Jan 04 11:20:00 UTC 2016>-<Mon Jan 04 18:05:00 UTC 2016>-<EI>-<3241>-<EI>-<139>-<USBC>-<ROUND>-<USD>
I have tried /&\\<[AZ]+\\>(?=$)/ and /\\<[A-Za-z]+\\>$/ but it's not working. 我已经尝试过/&\\<[AZ]+\\>(?=$)/和/\\<[A-Za-z]+\\>$/但无法正常工作。
2 个解决方案
解决方案1
1 2015-10-27 09:56:09
<[^>]*>\s*$
Try this.See demo. 试试看。看演示。
https://regex101.com/r/vP2zF2/4 https://regex101.com/r/vP2zF2/4
$re = "/<[^>]*>\\s*$/m";
$str = "<ABZ>-<BOS>-<Mon Dec 28 11:20:00 UTC 2015>-<Mon Dec 28 18:05:00 UTC 2015>-<EI>-<3241>-<EI>-<139>-<USBR>-<ROUND>-<GBP>\n<ABZ>-<BOS>-<Mon Jan 04 11:20:00 UTC 2016>-<Mon Jan 04 18:05:00 UTC 2016>-<EI>-<3241>-<EI>-<139>-<NONE>-<ONEWAY>-<GBP>\n<ABZ>-<BOS>-<Mon Jan 04 11:20:00 UTC 2016>-<Mon Jan 04 18:05:00 UTC 2016>-<EI>-<3241>-<EI>-<139>-<NONE>-<ROUND>-<USD>\n<ABZ>-<BOS>-<Mon Jan 04 11:20:00 UTC 2016>-<Mon Jan 04 18:05:00 UTC 2016>-<EI>-<3241>-<EI>-<139>-<NSNS>-<ROUND>-<GBP>\n<ABZ>-<BOS>-<Mon Jan 04 11:20:00 UTC 2016>-<Mon Jan 04 18:05:00 UTC 2016>-<EI>-<3241>-<EI>-<139>-<USBC>-<ONEWAY>-<GBP>\n<ABZ>-<BOS>-<Mon Jan 04 11:20:00 UTC 2016>-<Mon Jan 04 18:05:00 UTC 2016>-<EI>-<3241>-<EI>-<139>-<USBC>-<ROUND>-<GBP>\n<ABZ>-<BOS>-<Mon Jan 04 11:20:00 UTC 2016>-<Mon Jan 04 18:05:00 UTC 2016>-<EI>-<3241>-<EI>-<139>-<USBC>-<ROUND>-<USD>";
preg_match_all($re, $str, $matches);
解决方案2
0 2015-10-27 10:57:45
I have used my own expression (without escaped characters) and used it like this: 我使用了自己的表达式（没有转义字符），并使用了它，如下所示：
$str = "<ABZ>-<BOS>-<Mon Dec 28 11:20:00 UTC 2015>-<Mon Dec 28 18:05:00 UTC 2015>-<EI>-<3241>-<EI>-<139>-<USBR>-<ROUND>-<GBP>";
preg_match("/<[A-Za-z]+>$/", $str, $match);
$match = str_replace(array('<', '>'), array('', ''), $match[0]);
$currency = $match;
echo $currency;
I didn't need /gm as it's not multiline, it's a CSV extracted line by line. 我不需要/gm因为它不是多行的，而是逐行提取的CSV文件。
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