Help with php and regular expressions

Question

I am making a package and would like php to execute sed - command during setup (when user goes to installation php page and submits info). Like this:
exec("sed -i 's|^.*$db_host.*$|$db_host="$HOST";|' config.php");
exec("sed -i 's|^.*$db_user.*$|$db_user="$IPUSER";|' config.php");
exec("sed -i 's|^.*$db_password.*$|$db_password="$IPUSERPASS";|' config.php");
exec("sed -i 's|^.*$db_name.*$|$db_name="$DBNAME";|' config.php");
exec("sed -i 's|^.*$url_base.*$|$url_base="$URLBASE";|' config.php");
Apparently something is wrong with escapes because sed never gets any matches that it would replace.

Answer 1

phrakture wrote:
mmgm wrote:
cactus wrote:and there is no reason to stick a .* on the front of the regexp. Just make sure the variables have no blank space at the start of the line in front of them.
Making sure you have no blank space before the variable is quite a demand for people obsessed with tabbing, like me.
I swear, if my tab key ever breaks, I'm gonna start smashing things.
I'm such a clean-code-whore.
but this is a config file... do you really tab out your config files?
Config files are usually ment to be human-readable. This is why they usually contain comments and such. Tabbing makes code more readable and therefore I find it usefull in any file which contains text of any sort. In the end, it's going to make your life a whole lot easier.