How do I change the shell for php's exec()

Question

I want to use php\'s exec() function on an ubuntu server. The problem is, I alway get an error, that the command is not found. For example using

exec(\"echo         


        

Answer 1

Try shell_exec() instead. exec should not invoke ANY shell to execute your program. Alternately, you can invoke bash with exec like

exec("/bin/bash -c \"echo $foo > bar.txt'\"")