3v4l.org

run code in 300+ PHP versions simultaneously
<?php function my_length(string $a): int { var_dump(memory_get_peak_usage()); return strlen($a); } $a = str_repeat("a", 100_000); var_dump(memory_get_peak_usage()); my_length($a);
Output for 8.5.0 - 8.5.3
int(563632) int(563960)
Output for 8.4.1 - 8.4.18
int(489616) int(489944)
Output for 8.2.0 - 8.2.30, 8.3.0 - 8.3.30
int(489576) int(489904)
Output for 8.1.0 - 8.1.34
int(489888) int(490216)
Output for 8.0.1 - 8.0.30
int(489392) int(489720)
preferences:
78.94 ms | 1100 KiB | 4 Q