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<?php function testWordCount ($in) { $is_match = preg_match('/^(\b[^\s]+\s*){2,10}$/', $in); return (boolean)$is_match; } echo ("Three words returns:\r\n".print_r(testWordCount('This is three'), true)."\r\n"); echo ("Fourty words returns:\r\n".print_r(testWordCount('1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40'), true)."\r\n");
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.32, 7.1.0 - 7.1.24, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Three words returns: 1 Fourty words returns:

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266.16 ms | 406 KiB | 422 Q