在PHP调用中使用Lampp mysqldump作为默认值

Question

tricky question and I don't know if SO is the good space (maybe AskUbuntu ? or SuperUser ?)

I've set my Lampp on my ubuntu in /opt/lampp/

Problem, when I need to call direct bin as mysqldump , I end up calling the default installed one on my ubuntu, not the one linked to my lampp :

$ mysqldump --user=root test

mysqldump: Got error: 2002: Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) when trying to connect

As you can see, it check for /var/run . If I want to use the good one, I should specify the path :

$ /opt/lampp/bin/mysqldump --user=root test

-- MySQL dump 10.13 Distrib 5.6.21, for Linux (x86_64)

I could use the full path in my PHP call, but my PHP prod server will then not work.

How can I set the Lampp bin as default to be used by php with exec('mysqldump') ?

Answer 1

You really have several choices to do what you want.

• You could create a configuration file that depends on your environement (local, dev, preprod, prod ...). This file may declare an array of configurations, one of which is the path of the executable you need. Your php code will know the environment by checking a global variable, for instance $_SERVER , which can be set in your web server's vhost file. I think that's the clean way of doing.

• You could hardcode a path for you executable (let's say /home/www/mysqldump ) and create a symbolic link with ln -s (if I remember right, or check the man page) between your environment's executable /opt/lampp/bin/mysqldump and /home/www/mysqldump . You have to prepare all your environments that way. I think it's a bit ugly but it's quick.

I am sure there are tons of other solutions.