3v4l.org

run code in 300+ PHP versions simultaneously
<?php function createInstance() { return eval('return new class {};'); } $startMemory = memory_get_peak_usage(); for ($i = 0; $i < 10000; $i++) { createInstance(); } var_dump((memory_get_peak_usage() - $startMemory) / 1024**2); // MB
Output for 8.3.0 - 8.3.6
float(8.144950866699219)
Output for 8.2.0 - 8.2.18
float(8.082450866699219)
Output for 8.1.0 - 8.1.28
float(9.63592529296875)
Output for 8.0.1 - 8.0.30
float(9.323013305664062)
preferences:
111.7 ms | 401 KiB | 89 Q