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<?php $s = "Example of valid matches: NE1, NE17, NE49 Invalid matches: NE61, NE70"; if (preg_match_all('~\bNE(?!(?:6[1-9]|7[01])\b)\d{1,2}\b~', $s, $matches)) { print_r($matches[0]); }
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
Array ( [0] => NE1 [1] => NE17 [2] => NE49 )
preferences:
143.83 ms | 407 KiB | 5 Q