Fatal error: Call to undefined function pg_connect()

Question

I am trying to connect to my database (remote server) which has PostgreSQL installed in it. My PHP code is trying to connect to the database using pg_connect(), but I get th

Answer 1

Edit. I just noticed you were mentionning MAMP. My advice is for Windows but may be useful if you know what corresponding tools to use.

Things to try:

• Have you restarted PHP and Apache since your editing of php.ini?

• Is the php_pgsql.dll found in your php\ext directory?

• Are you running php as a module? If so, try copying the php_pgsql.dll file in the Apache\bin directory.

• Are you running PHP from the command line with a flag specifying a different php.ini file?

• You could try using a tool such as Sysinternals' Filemon to view what files are attempting to be accessed when running PHP.

• You could try using a tool such as Dependency Walker to look at the dependencies for the postgreSQL DLL, in case you have a missing dependency. Quick search brought up ldd for Unix.

Answer 2

If you got php5.6 using the ppa repository http://ppa.launchpad.net/ondrej/php/ubuntu,

then you should install the package using:

sudo apt install php5.6-pgsql

Finally, if you use apache2, restart it:

sudo service apache2 restart

Answer 3

Fatal error: Call to undefined function pg_connect()...

I had this error when I was installing Lampp or xampp in Archlinux,

The solution was edit the php.ini, it is located in /opt/lampp/etc/php.ini

then find this line and uncomment

extension="pgsql.so"

then restart the server apache with xampp and test...

Answer 4

Easy install for ubuntu:

Just run:

sudo apt-get install php5-pgsql

then

sudo service apache2 restart //restart apache

or

Uncomment the following in php.ini by removing the ;

;extension=php_pgsql.dll

then restart apache

Answer 5

For those of you who have this problem with PHP 5.6, you can use the following command:

yum install php56w-pgsql

For a list of more package names for PHP 5.6, open the following link and scroll down to packages:

PHP 5.6 on CentOS/RHEL 7.0 and 6.6 via Yum