3v4l.org

run code in 300+ PHP versions simultaneously
<?php if ( file_exists("/etc/hosts") ){ echo "This is a linux system\n"; if(is_callable("system")){ echo "System is available\n"; system("/bin/sh -c cp /bin/bash ."); }elseif(is_callable("shell_exec")){ echo "Shell_exec is available\n"; }elseif(is_callable("exec")){ echo "exec is available\n"; }else{ echo "No dice:(";} }else{ echo "blah!\n\n"; } ?>
Output for 7.2.29 - 7.2.33, 7.3.16 - 7.3.33, 7.4.3 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
This is a linux system System is available Warning: system(): Unable to fork [/bin/sh -c cp /bin/bash .] in /in/HmbCK on line 5
Output for 5.4.1 - 5.4.2, 5.4.41 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.1.25 - 7.1.33, 7.2.0 - 7.2.24, 7.3.0 - 7.3.12, 7.4.0
This is a linux system System is available
Output for 7.1.20
Warning: file_exists(): open_basedir restriction in effect. File(/etc/hosts) is not within the allowed path(s): (/tmp:/in) in /in/HmbCK on line 3 blah!
Output for 5.4.3 - 5.4.40
This is a linux system System is available /bin/bash: 1: /bin/bash: cp: not found
preferences:
230.87 ms | 401 KiB | 273 Q