escapeshellarg PHP 4.0.3

string escapeshellarg(string arg)

 

Quotes and escapes an argument for use in a shell command.
escapeshellcmd PHP 3.0

string escapeshellcmd(string command)

 

Escapes shell metacharacters.
exec PHP 3.0

string exec(string command[, array output[, int return_value]])

  

Executes an external program.
passthru PHP 3.0

void passthru(string command[, int return_value])

  

Executes an external program and displays raw output.
proc_close PHP 4.3.0

int proc_close(resource process)

 

Closes a process opened by proc_open().
proc_open PHP 4.3.0

resource proc_open(string command, array descriptorspec, array &pipes)

 

Run a process with more control over its file descriptors.
shell_exec PHP 4.0

string shell_exec(string cmd)

  

Executes command via shell and returns complete output as string.