3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $cmds = array("alias", "apt-get", "aptitude", "aspell", "awk", "basename", "bc", "bg", "break", "builtin", "bzip2", "cal", "case", "cat", "cd", "cfdisk", "chgrp", "chmod", "chown", "chroot", "chkconfig", "cksum", "cmp", "comm", "command", "continue", "cp", "cron", "crontab", "csplit", "cut", "date", "dc", "dd", "ddrescue", "declare", "df", "diff", "diff3", "dig", "dir", "dircolors", "dirname", "dirs", "dmesg", "du", "echo", "egrep", "eject", "enable", "env", "eval", "exec", "exit", "expect", "expand", "export", "expr", "false", "fdformat", "fdisk", "fg", "fgrep", "find", "fmt", "fold", "for", "fsck", "function", "fuser", "gawk", "getopts", "grep", "groupadd", "groupdel", "groupmod", "groups", "gzip", "hash", "head", "history", "hostname", "iconv", "id", "if", "ifconfig", "ifdown", "ifup", "import", "install", "jobs", "join", "kill", "killall", "less", "let", "ln", "local", "locate", "logname", "logout", "look", "lpc", "lpr", "lprm", "ls", "lsof", "man", "mkdir", "mkfifo", "mknod", "more", "mount", "mtools", "mtr", "mv", "mmv", "nice", "nl", "nohup", "notify-send", "nslookup", "open", "op", "passwd", "paste", "ping", "pkill", "popd", "pr", "printf", "ps", "pushd", "pwd", "quota", "quotacheck", "quotactl", "ram", "rcp", "read", "readonly", "rename", "return", "rev", "rm", "rmdir", "rsync", "screen", "scp", "sdiff", "sed", "select", "seq", "set", "shift", "shopt", "shutdown", "sleep", "slocate", "sort", "source", "split", "ssh", "su", "sudo", "sum", "suspend", "symlink", "sync", "tail", "tar", "tee", "test", "time", "times", "touch", "top", "traceroute", "tr", "true", "tsort", "tty", "type", "ulimit", "umask", "unalias", "uname", "unexpand", "uniq", "units", "unset", "unshar", "until", "useradd", "userdel", "usermod", "users", "uuencode", "uudecode", "vi", "vmstat", "wait", "watch", "wc", "whereis", "which", "while", "who", "whoami", "write", "xargs", "xdg-open", "yes", ".", "!!", "###"); echo $cmd." => ".shell_exec("php");
Output for 5.0.4 - 5.6.28, 7.0.0 - 7.1.0
Notice: Undefined variable: cmd in /in/kXAZa on line 4 =>
Output for hhvm-3.12.0
Notice: Undefined variable: cmd in /in/kXAZa on line 3 => Failed to exec: `php'
Output for hhvm-3.10.0
Notice: Undefined variable: cmd in /in/kXAZa on line 4 => Failed to exec: `php'
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: cmd in /in/kXAZa on line 4 =>