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  1. <?php
  2.  
  3. $str = 'aaa.			86400
  4. ns1.dns.nic.aaa.	172800	IN	A	156.154.144.2
  5. ns1.dns.nic.aaa.	172800	IN	AAAA	2610:a1:1071:0:0:0:0:2
  6. abarth.			86400	IN	RRSIG	NSEC 8 1 86400 20180728050000 20180715040000 41656 . 
  7. a0.nic.abarth.		172800	IN	A	65.22.24.17
  8. a0.nic.abarth.		172800	IN	AAAA	2a01:8840:1a:0:0:0:0:17
  9. ai.	
  10. ns2.offshore.ai.	172800	IN	A	108.166.113.245
  11. whois.ai.		172800	IN	A	209.59.119.1
  12. xn--node.ns.anycast.pch.net.	172800	IN	A	204.61.216.88
  13. d.nic.xn--mxtq1m.	172800	IN	AAAA	2001:c50:ffff:1:0:0:0:185
  14. d.nic.
  15. xn--ngbc5azd.		172800	IN	NS	a.nic.xn--ngbc5azd.';
  16.  
  17. if (preg_match_all('/^[^.\r\n]+\.(?=\t)/m', $str, $m)) {
  18. 	print_r($m[0]);
  19. }
  20.  
Success #stdin #stdout 0.02s 24000KB
comments (?)
stdin 
Standard input is empty
stdout 
Array
(
    [0] => aaa.
    [1] => abarth.
    [2] => ai.
    [3] => xn--ngbc5azd.
)
https://ideone.com/w7uCXi
language:
PHP (php 7.3.5)
created:
7 years ago
visibility:
secret

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