Postgres pg_dump显示空文件

Question

我在wamp中使用此命令，但是我得到的是Mybackup.sql空文件，我知道我丢失了什么吗？

<?php    exec("pg_dump -U postgres taro-api > Mybackup.sql"); ?>

Answer 1

With the additional information from the comments, it becomes clear that you are on Windows and pg_dump is not on your PATH .

Either use the full absolute path for pg_dump or add the directory to the PATH environment variable.