Online PHP editor | output for 2BUWE

Output for 8.3.0 - 8.3.6: Warning: popen(ls /,r): Cannot allocate memory in /in/2BUWE on line 1 Fatal error: Uncaught TypeError: fread(): Argument #1 ($stream) must be of type resource, false given in /in/2BUWE:1 Stack trace: #0 /in/2BUWE(1): fread(false, 31337) #1 {main} thrown in /in/2BUWE on line 1
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18: Warning: popen(ls /,r): Cannot allocate memory in /in/2BUWE on line 1 Fatal error: Uncaught TypeError: fread(): Argument #1 ($stream) must be of type resource, bool given in /in/2BUWE:1 Stack trace: #0 /in/2BUWE(1): fread(false, 31337) #1 {main} thrown in /in/2BUWE on line 1
Process exited with code 255.
Output for 7.3.16 - 7.3.33, 7.4.3 - 7.4.33: Warning: popen(ls /,r): Cannot allocate memory in /in/2BUWE on line 1 Warning: fread() expects parameter 1 to be resource, bool given in /in/2BUWE on line 1
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.36, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0, 7.3.12, 7.4.0
Output for 7.2.29 - 7.2.33: Warning: popen(ls /,r): Cannot allocate memory in /in/2BUWE on line 1 Warning: fread() expects parameter 1 to be resource, boolean given in /in/2BUWE on line 1