tidak dapat memuat oci8 -> Kesalahan fatal:Panggilan ke fungsi yang tidak ditentukan oci_connect()

Di Ubuntu 16.04, menggunakan PHP 5.6, dengan os 64bit, coba ini:

Instal paket:

sudo apt-get install php5.6-dev build-essential php-pear libaio1

Unduh paket versi terbaru dari:

http://www.oracle.com/technetwork/topics/linuxx86-64soft-092277.html

Cari paket-paket ini, sesuai dengan versi terbaru:

oracle-instantclientXX.X-basic-XX.X.X.X.X-X.x86_64.rpm
oracle-instantclientXX.X-devel-XX.X.X.X.X-X.x86_64.rpm

Mengonversi paket:

sudo apt-get install alien
sudo alien oracle-instantclientXX.X-basic-XX.X.X.X.X-X.x86_64.rpm
sudo alien oracle-instantclientXX.X-devel-XX.X.X.X.X-X.x86_64.rpm

Memasang:

sudo dpkg -i oracle-instantclientXX.X-basic_XX.X.X.X.X-X_amd64.deb
sudo dpkg -i oracle-instantclientXX.X-devel_XX.X.X.X.X-X_amd64.deb

Menginstal oci8:

sudo pecl install oci8-2.0.12

*Build process completed successfully
Installing '/usr/lib/php/20131226/oci8.so'
install ok: channel://pecl.php.net/oci8-2.0.12
configuration option "php_ini" is not set to php.ini location
You should add "extension=oci8.so" to php.ini*

Tambahkan ekstensi ke php:

sudo gedit /etc/php/5.6/apache2/php.ini

tambahkan ekstensi:

extension=oci8.so

Mulai ulang apache:

sudo service apache2 restart

Itu dia.