3v4l.org

run code in 300+ PHP versions simultaneously
<?php ini_set('memory_limit', 2048); register_shutdown_function(function () { $y = []; for ($i = 0; $i < 1000000000; $i++) { $y[] = $i; } var_dump([ 'total count is' => count($y) ]); }); $x = []; for ($i = 0; $i < 1000000000; $i++) { $x[] = $i; }
Output for 8.1.0 - 8.1.1, 8.1.28 - 8.1.30, 8.2.18 - 8.2.25, 8.3.5 - 8.3.14, 8.4.1
Warning: Failed to set memory limit to 2048 bytes (Current memory usage is 2097152 bytes) in /in/HDkRc on line 3 Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 67108872 bytes) in /in/HDkRc on line 14 Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 33554440 bytes) in /in/HDkRc on line 7
Process exited with code 255.
Output for 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Warning: Failed to set memory limit to 2048 bytes (Current memory usage is 2097152 bytes) in /in/HDkRc on line 3 Fatal error: Out of memory (allocated 18878464 bytes) (tried to allocate 33554440 bytes) in /in/HDkRc on line 14 Fatal error: Out of memory (allocated 27271168 bytes) (tried to allocate 16777224 bytes) in /in/HDkRc on line 7 mmap() failed: [12] Cannot allocate memory mmap() failed: [12] Cannot allocate memory mmap() failed: [12] Cannot allocate memory
Process exited with code 255.
Output for 8.1.2 - 8.1.27
Warning: Failed to set memory limit to 2048 bytes (Current memory usage is 2097152 bytes) in /in/HDkRc on line 3 Fatal error: Out of memory (allocated 18878464) (tried to allocate 33554440 bytes) in /in/HDkRc on line 14 Fatal error: Out of memory (allocated 27271168) (tried to allocate 16777224 bytes) in /in/HDkRc on line 7 mmap() failed: [12] Cannot allocate memory mmap() failed: [12] Cannot allocate memory mmap() failed: [12] Cannot allocate memory mmap() failed: [12] Cannot allocate memory
Process exited with code 255.
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
Fatal error: Allowed memory size of 2097152 bytes exhausted (tried to allocate 2097160 bytes) in /in/HDkRc on line 14 Fatal error: Allowed memory size of 2097152 bytes exhausted (tried to allocate 528384 bytes) in /in/HDkRc on line 7
Process exited with code 255.

preferences:
57.98 ms | 412 KiB | 5 Q