[php] Call to undefined function oci_connect()

I got this error.

Fatal error: Call to undefined function oci_connect()
$conn = oci_connect('localhost', 'username', 'password') or die(could not connect:'.oci_error)

that is the code.

This is the error I got.

Fatal error: Call to undefined function oci_connect() in C:\xampp\htdocs\org\org\php\myphp.php on line 51

I checked the PHP DLL files in ext folder.

Somebody help on this issue thanks in advance.

I had the same issue, the solution on this page helped me, it's caused by using incompatible oci ddl files.

Hope it helps.

try this

in the php.ini file uncomment this

extension_dir = "./" "remove semicolon"

Download from Instant Client for Microsoft Windows (x64) and extract the files below to "c:\oracle":

instantclient-basic-windows.x64-12.1.0.2.0.zip

instantclient-sqlplus-windows.x64-12.1.0.2.0.zip

instantclient-sdk-windows.x64-12.1.0.2.0.zip This will create the following folder "C:\Oracle\instantclient_12_1".

Finally, add the "C:\Oracle\instantclient_12_1" folder to the PATH enviroment variable, placing it on the leftmost place.

Then Restart your server.

Simple steps

You need to enable the below extension in your php.ini

;extension=php_oci8.dll
;extension=php_oci8_11.g.dll

by removing the ";" so that the results will below:

extension=php_oci8.dll
extension=php_oci8_11.g.dll

Download Oracle Instant Client:- Preferably 32 bit. 32 bit will also work on 64 bit. You can just google: download oracle instant client windows 32 bit. Use version 11 of the client because extension=php_oci8_11.g.dll won't work with 12. Unzip the package into a location such as C:\Oracle\instantclient_11_2.

Finally modify the System's PATH Environment Variable with end location, under system variables not user variables

Then you need to restart the System for PATH changes to fully propagate.

If you just restart XAMPP/WAMP without restarting the machine the Client's DLL files (i.e. OCL.dll) will not be loaded (nor found) by PHP's php_oci8_11g.dll extension.

Alright, folks.

First, use

<?php 
phpinfo();
?> 

and determine your PHP Version (located at the very top, e.g. 7.0.xxx) and also, your PHP Version architecture: x64 or x86 and also, Thread Safe or Not THread Safe (located in the first table as "Thread Safety".) "Disabled" obviously means "Not Thread Safe".

It is absolutely critical that the following three pieces of software that you will need are:

1. for the same major version of PHP (7.0 for 7.0.xxx)
2. same version of Oracle as the version you are accessing (11g, 12g, etc)
3. the same Not Thread Safe / Thread Safe version of PHP
4. all for the same architecture.

If any of the following are for a different architecture, Not Thread Safe/Thread Safe version, PHP major version number, or database version, you'll get errors:

 1. PHP for Windows
 2. OCI8 PECL Drivers for PHP (https://pecl.php.net/package/oci8)
 3. Oracle Instant Client

Remember: If you are connecting to an 11g Oracle instance, you need an 11g driver.

Second, install the correct PHP, OCI8 PECL Driver, and instant client.

I chose:

d:\php\ for php
d:\oci\ for instant client
unzip the contents of the OCI8 PECL Driver into d:\php\ext\

Third, modify d:\php\php.ini according the instructions given by Oracle:

1. set the extension directory
2. set only one of the following:
  a. for 11g drivers, use extension=php_oci8_11g.dll
  b. for 12c drivers, use extension=php_oci8_12c.dll
  c. for other oracle DB drivers, use the correct oracle extension.

Fourth: Add d:\oci\ (or whatever your instant client install location is) to your system PATH.

Fifth: reboot your PC.

Sixth, on a command prompt, type "where oci*" and verify that your Instant Client install path version of oci.dll is present.

Seventh, go to d:\php\ and type "php -m" and you should see OCI8 in the list.

If you do not see OCI8 in the list of modules after typing "php -m", open up d:\php\errorlog.txt

If you see something like:

PHP Warning:  PHP Startup: Unable to load dynamic library 'ext\php_oci8_11g.dll' - %1 is not a valid Win32 application.

then either instant client or your PECL driver download is not the same architecture as your PHP version.

If you see something like:

PHP Warning:  PHP Startup: Unable to load dynamic library 'ext\php_oci8_12c.dll' - The specified procedure could not be found.

then you are using the wrong OCI8 PECL driver for your version of instant client.

Hope this helps.

I just spend THREE WHOLE DAYS fighting against this issue.

I was using my ORACLE connection in Windows 7, and no problem. Last week I Just get a new computer with Windows 8. Install XAMPP 1.8.2. Every app PHP/MySQL on this server works fine. The problem came when I try to connect my php apps to Oracle DB.

Call to undefined function oci_pconnect()

And when I start/stop Apache with changes, a strange "Warning" on "PHP Startup" that goes to LOG with "PHP Warning: PHP Startup: in Unknown on line 0"

I did everything (uncommented php_oci8.dll and php_oci8_11g.dll, copy oci.dll to /ext directory, near /Apache and NOTHING it works. Download every version of Instant Client and NOTHING.

God came into my help. When I download ORACLE Instant Client 32 bits, everything works fine. phpinfo() displays oci8 info, and my app works fine.

So, NEVER MIND THAT YOUR WINDOWS VERSION BE x64. The link are between XAMPP and ORACLE Instant Client.

1. Check your php –version as like as PHP 5.6.32 (cli) (built: Oct 25 2017 16:02:15).

2. Using the OCI8 extension to access Oracle Database. So Download php_oci8.dll from 1https://pecl.php.net/package/oci8/2.0.8/windows. (5.6 Thread Safe (TS) x86 ) php_oci8.dll must be the same version with your php version.Then unzipped it and you will find 1.php_oci8.dll 2.php_oci8_11g.dll (as per your oralce version) these two file pasted into your
   (xampp\php\ext) folder.

3. Open your php.ini file and add these extension=php_oci8.dll extension=php_oci8_11g.dll

4. Check your oracle version and service name using these commands

   1. Open your cmd
   2. sqlplus / as sysdba
   3. select * from v$version; Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production, our oracle version is 11g so we can use instantclient_11_1 (Instant Client 32-bit) downloads from https://www.oracle.com/technetwork/topics/winsoft-085727.html

5. show parameter service_name; service_name is orcl (you should remember this service name)

6. After downloading instantclient_11_1 unzipped it and then pasted in your Local Disk. And copy the path C:\instantclient_11_1 and then set this path as your user variable & system variable. Note is that my code is working without setting path variable.

7. Open your cmd and enter into SQL, create your schema following these commands

   1. sqlplus / as sysdba
   2. create user dbname identified by pass123;

   3. grant connect,resource to dbname;

   4. Create table user_info and insert data into your table and commit out. Note: you must commit your data either data is not inserted.

   5. Then this script run in your htdocs

<html>_x000D_
<head><title>Oracle demo</title></head>_x000D_
<body>_x000D_
<?php_x000D_
_x000D_
// Create connection to Oracle_x000D_
$conn = oci_connect("dbname", "pass123", "//localhost/orcl");  // orcl is your service_name_x000D_
_x000D_
$query = 'select * from user_info';_x000D_
$stid = oci_parse($conn, $query);_x000D_
$r = oci_execute($stid);_x000D_
_x000D_
// Fetch each row in an associative array_x000D_
print '<table border="1">';_x000D_
while ($row = oci_fetch_array($stid, OCI_RETURN_NULLS+OCI_ASSOC)) {_x000D_
   print '<tr>';_x000D_
   foreach ($row as $item) {_x000D_
       print '<td>'.($item !== null ? htmlentities($item, ENT_QUOTES) : '&nbsp').'</td>';_x000D_
   }_x000D_
   print '</tr>';_x000D_
}_x000D_
print '</table>';

I installed Wamp & expected everything to work out of the box. Not so. I have 2 Oracle clients on my x64 Windows machine (instant and full). If anyone else has a similar setup, the trick is to make sure the instant client is (a) in your Path environment variable and (b) precedes the full client in the Path variable. There's a really brief section on Windows here but it gave the answer.

Things to Make sure

1. Whenever you connecting Oracle Database , try to use 32 Bit oracle client libraries, Since XAMP PHP is compiled with 32 Bit(Though you have 64 Bit windows Machine)

2. Download Oracle Client from Download From here

3. Paste it in C:\instantclient_12_1

4. Then Set the path to above in System Environment Variable
5. Then Go to C:\xampp\php\php.ini and uncomment extension=php_oci8_12c.dll
6. Then Restart the XAMP and it should work without any Issue.

You need to enable that extension in your php.ini file. See Oracle Installation:

extension=oci8.so

I installed WAMPServer 2.5 (32-bit) and also encountered an oci_connect error. I also had Oracle 11g client (32-bit) installed. The common fix I read in other posts was to alter the php.ini file in your C:\wamp\bin\php\php5.5.12 directory, however this never worked for me. Maybe I misunderstood, but I found that if you alter the php.ini file in the C:\wamp\bin\apache\apache2.4.9 directory instead, you will get the results you want. The only thing I altered in the apache php.ini file was remove the semicolon to extension=php_oci8_11g.dll in order to enable it. I then restarted all the services and it now works! I hope this works for you.

• Download xampp and uncomment oracle 12c extension or 11c 'extension=oci8_11g' for xampp 7.2.9
• Download instant client 32 bit and set its path
• Download instant client 32 bit SDK package and set its path
• Copy instant clients and SDK dll files to xamp\php\ext, xampp\php\ and xampp\appache\bin\
• Download php-oci of same php version of tread safe x86 then copy its files to php\ext*.dll, php version is written on top of phpinfo tab of xampp admin.
• OCI8 will appear on phpadmin page or apache admin then phpadmin tab. It means phpOCI has been installed.