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run code in 300+ PHP versions simultaneously
<?php var_dump(rand(5, 1));
Output for 5.6.1 - 5.6.2, 5.6.5 - 5.6.6, 5.6.27 - 5.6.29, 5.6.33 - 5.6.34, 5.6.38 - 5.6.39, 7.0.4 - 7.0.6, 7.0.8 - 7.0.9, 7.0.25, 7.0.29, 7.0.31, 7.0.33, 7.1.1, 7.1.7, 7.1.16 - 7.1.17, 7.1.19, 7.1.30, 7.1.33, 7.2.6, 7.2.13, 7.2.20, 7.2.26, 7.2.28 - 7.2.29, 7.2.31, 7.2.33, 7.3.0, 7.3.5, 7.3.7, 7.3.13, 7.3.16, 7.3.18 - 7.3.19, 7.4.5 - 7.4.7, 7.4.12
int(3)
Output for 7.1.6, 7.1.9, 7.1.13, 7.1.20, 7.1.22, 7.1.25, 7.1.28, 7.1.31, 7.2.3, 7.2.5, 7.2.8, 7.2.10, 7.2.16 - 7.2.19, 7.3.9, 7.3.11 - 7.3.12, 7.3.20, 7.4.0, 7.4.4, 7.4.9, 7.4.11
int(1)
Output for 5.6.0, 5.6.8 - 5.6.10, 5.6.12 - 5.6.14, 5.6.16 - 5.6.19, 5.6.21, 5.6.23 - 5.6.24, 5.6.31, 5.6.35 - 5.6.36, 5.6.40, 7.0.3, 7.0.11 - 7.0.12, 7.0.14, 7.0.17, 7.0.19 - 7.0.21, 7.0.24, 7.0.26, 7.0.28, 7.0.30, 7.0.32, 7.1.0, 7.1.2, 7.1.8, 7.1.14, 7.1.18, 7.1.21, 7.1.26, 7.1.32, 7.2.0 - 7.2.2, 7.2.9, 7.2.11, 7.2.14, 7.2.23 - 7.2.24, 7.3.4, 7.3.6, 7.3.17, 7.3.21, 7.4.3, 7.4.10
int(4)
Output for 7.1.3, 7.1.10 - 7.1.11, 7.1.24, 7.1.29, 7.2.15, 7.2.22, 7.2.30, 7.2.34, 7.3.1, 7.3.8, 7.3.14, 7.3.22 - 7.3.24, 7.4.8
int(2)
Output for 5.6.3 - 5.6.4, 5.6.7, 5.6.11, 5.6.15, 5.6.20, 5.6.22, 5.6.25 - 5.6.26, 5.6.30, 5.6.32, 5.6.37, 7.0.0 - 7.0.2, 7.0.7, 7.0.10, 7.0.13, 7.0.15 - 7.0.16, 7.0.18, 7.0.22 - 7.0.23, 7.0.27, 7.1.4 - 7.1.5, 7.1.12, 7.1.15, 7.1.23, 7.1.27, 7.2.4, 7.2.7, 7.2.12, 7.2.21, 7.2.25, 7.2.27, 7.2.32, 7.3.2 - 7.3.3, 7.3.10, 7.3.15, 7.4.1 - 7.4.2
int(5)

preferences:
126.02 ms | 408 KiB | 187 Q