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  1. <?php
  2.  
  3. $ss = ["8.8.8.8|0", "8.8.8.8|1", "8.8.8.8|65536", "8.8.8.8|dawda"];
  4. foreach ($ss as $s) {
  5. 	if (preg_match('~^\d+(?:\.\d+){3}\|(.*)$~', $s, $res)) {
  6. 		if (ctype_digit($res[1]) && intval($res[1]) > 0 && intval($res[1]) < 65536 ) { // valid port, omit
  7. 			echo "The port is valid: " . $res[1] . "\n";
  8. 		} else {
  9. 			echo "Invalid port: " . $res[1] . "\n";
  10. 		}
  11. 	}
  12. }
Success #stdin #stdout 0s 82944KB
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stdin
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Standard input is empty
stdout
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Invalid port: 0
The port is valid: 1
Invalid port: 65536
Invalid port: dawda
https://ideone.com/sV2pcC
language:
PHP (php 7.3.5)
created:
8 years ago
visibility:
secret

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