3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = array(); for ($i = 0; $i < 1024 * 1024; ++$i) $array[$i] = 0; echo memory_get_peak_usage();
Output for 8.4.1
17168272
Output for 8.2.0 - 8.2.26, 8.3.0 - 8.3.14
17168248
Output for 8.1.0 - 8.1.1, 8.1.28 - 8.1.30
33945776
Output for 8.1.2 - 8.1.27
Fatal error: Out of memory (allocated 18878464) (tried to allocate 33554440 bytes) in /in/qGqOZ on line 5 mmap() failed: [12] Cannot allocate memory mmap() failed: [12] Cannot allocate memory
Process exited with code 255.
Output for 8.0.0 - 8.0.30
33945344
Output for 7.4.0 - 7.4.33
33945648
Output for 7.3.0 - 7.3.33
33945568
Output for 7.2.17 - 7.2.33
33941712
Output for 7.2.0 - 7.2.6
33941752
Output for 7.1.26 - 7.1.33
33905040
Output for 7.1.0, 7.1.7 - 7.1.20
33905112
Output for 7.1.5 - 7.1.6
33905160
Output for 7.0.0 - 7.0.20
33905128
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 32 bytes) in /in/qGqOZ on line 5
Process exited with code 255.
Output for 5.2.6 - 5.2.17
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 71 bytes) in /in/qGqOZ on line 5
Process exited with code 255.
Output for 5.2.1 - 5.2.5
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 24 bytes) in /in/qGqOZ on line 5
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0
Fatal error: Call to undefined function memory_get_peak_usage() in /in/qGqOZ on line 7
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: memory_get_peak_usage() in /in/qGqOZ on line 7
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4
Fatal error: Call to undefined function: memory_get_peak_usage() in /in/qGqOZ on line 7
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: memory_get_peak_usage() in /in/qGqOZ on line 7

preferences:
85.83 ms | 431 KiB | 5 Q