Loops with PHP shell_exec() : Use php for() or bash for-do-done?
bash, for-loop, loops, php, shell-exec
Solution
Go for bash loop, because `shell_exec` function is called only once. It will be faster than calling `shell_exec` multiple times. Enabling functions like exec, shell_exec itself a huge security issue. If someone managed to upload a PHP shell in your server then he can hack your server.
Problem
Let's say I want to execute the command `mycommand` with PHP `shell_exec()` 10 times. Should I do a bash loop: ``` shell_exec('for i in {1 .. 10} do mycommand -i done'); ``` or rather a PHP loop: ``` for($i = 1; $i <=10; ++$i) { shell_exec('mycommand -'.$i); } ``` What are the reasons (security, performance, style, ...) to choose one over the other?