PHP exec（）无法在AppServ上运行

Question

I'm now facing the following problem. Please help me out.

I have two file in the same directory: test.php and test.r

test.php

<?php
  exec("Rscript test.r");
?>

test.r

d=c(1:10);
write.csv(d, file="test.csv", fileEncoding="utf-8");

q();

While I access the test.php via chrome, it gives no test.csv.

Although it works fine on cmd Rscript test.r, it does not work while executing test.php.

Any suggestion?

Thanks

Answer 1

There are a few things to check:

• File permissions. Set them to 0777 temporarily to see if it's working
• Maybe the exec function is blocked. Check php.ini (or phpinfo()) for disabled_functions
• Third options - is one you really always need to consider - an error in your script.

Happy debugging !