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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 8.4.1 - 8.4.14, 8.5.0
float(8.20745849609375)
Output for 8.4.15
/bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.
Output for 8.3.0 - 8.3.28
float(8.144950866699219)
Output for 8.2.0 - 8.2.29
float(8.082450866699219)
Output for 8.1.0 - 8.1.33
float(9.63592529296875)
Output for 8.0.1 - 8.0.30
float(9.323013305664062)
preferences:
116.68 ms | 412 KiB | 5 Q