Fatal error: Uncaught Error: Call to undefined function db2_connect() - php

Question

I have some problem. I have been looking it for almost a week. I have done include ibm_db2.dll, change php version but not working. When I run the db2 query, it shows Fatal error: Uncaught Error: Call to undefined function db2_connect() in C:\laragon\www\hpc_dev\db2_conn.php:15 Stack trace: #0 C:\laragon\www\hpc_dev\index.php(3): include() #1 {main} thrown in C:\laragon\www\hpc_dev\db2_conn.php on line 15
Currently I am using php version 7.4.12 64bit (ts) using laragon in Windows 10. I also have tested using Xampp and the same problem occur. Below are my codes to connect to ibm db2:
db2_conn.php:
<?php
ini_set("display_errors", 1);
$database = 'DB2';
$user = 'xxx';
$password = 'xxx';
$hostname = 'xx.xx.xx';
$port = 60000;
$conn_string = "DRIVER={IBM DB2 ODBC DRIVER};DATABASE=$database;" .
"HOSTNAME=$hostname;PORT=$port;PROTOCOL=TCPIP;UID=$user;PWD=$password;";
$conn = db2_connect($conn_string, '', '');
if ($conn) {
echo "Connection succeeded.";
db2_close($conn);
}
else {
echo "Connection failed.";
}
?>
My code to show data from db2:
<?php
include("db2_conn.php");
$sql = "SELECT * FROM EMPLOYER WHERE EMPR_LOGIN_NAME = 'xxxxx'";
if ($conn)
{
$stmt = db2_exec($conn, $sql);
$row = db2_fetch_assoc($stmt);
echo $row['SECTOR_DESC'];
db2_close($conn);
}
?>
I don't know either the problem comes from db2 extension or others. Please help me.
For information, I have download the ibm db2 extension here: https://github.com/ibmdb/php_ibm_db2
Thanks

Answer 1

Your question omits details of the command-lines and actions you performed.
Most likely you missed a step in the configuration.
Remember to open the laragon terminal and verify that the Db2 driver is loaded:
php -m | grep ibm
should return ibm_db2 if you have correctly configured the correct version of the extension.
If you do not see that the ibm_db2 extension is loaded then any db2_connect will fail until you resolve the missing module.
For information the current laragon_full (November 2020) delivers PHP 7.2 TS, and that works correctly with the php_ibm_db2.dll TS for v7.2.x "out of the box" (which you must first download and configure).
Additionally, if I upgrade the PHP version for laragon to PHP 7.4.12 TS, and subsequently download and configure the matching php_ibm_db2.dll TS for php v7.4.x, then it all "just works" without any issues on Win 10 x64 2020 to connect to Db2-LUW and run queries etc.
It helps to verify that your Db2 client is correctly configured. You can do that independently of PHP. If you are using the clidriver Db2-client (the smallest footprint driver) you can configure the db2dsdriver.cfg XML file and then run db2cli validate -connect -dsn -user ... -passwd ... to verify that the connection works. If you are using either the Db2-runtime-client or the Db2 full client, or a local Db2-server, you can run (in the laragon terminal):
(after configuring your Db2 node directory and Db2 db directory via appropriate configuration commands )::
set DB2CLP=**$$**
db2 connect to $yourdsn user ... using ...