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<?php $min = 17; $max = $min + 48; // 48 is to fit the results in my console for ($testseed=$min; $testseed<$max; $testseed++) { mt_srand( $testseed ); $r = rand(); printf( "rand() == 8x + %d\n", $testseed, $r ); } ?>
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 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.24, 7.3.0 - 7.3.12
rand() == 8x + 17 rand() == 8x + 18 rand() == 8x + 19 rand() == 8x + 20 rand() == 8x + 21 rand() == 8x + 22 rand() == 8x + 23 rand() == 8x + 24 rand() == 8x + 25 rand() == 8x + 26 rand() == 8x + 27 rand() == 8x + 28 rand() == 8x + 29 rand() == 8x + 30 rand() == 8x + 31 rand() == 8x + 32 rand() == 8x + 33 rand() == 8x + 34 rand() == 8x + 35 rand() == 8x + 36 rand() == 8x + 37 rand() == 8x + 38 rand() == 8x + 39 rand() == 8x + 40 rand() == 8x + 41 rand() == 8x + 42 rand() == 8x + 43 rand() == 8x + 44 rand() == 8x + 45 rand() == 8x + 46 rand() == 8x + 47 rand() == 8x + 48 rand() == 8x + 49 rand() == 8x + 50 rand() == 8x + 51 rand() == 8x + 52 rand() == 8x + 53 rand() == 8x + 54 rand() == 8x + 55 rand() == 8x + 56 rand() == 8x + 57 rand() == 8x + 58 rand() == 8x + 59 rand() == 8x + 60 rand() == 8x + 61 rand() == 8x + 62 rand() == 8x + 63 rand() == 8x + 64

preferences:
176.79 ms | 406 KiB | 262 Q