Php web application can't process clearDB mysql service on bluemix - php

Question

I'm trying to deploy a php web application on bluemix. So I have bound a clearDB mysql service to my application. The vcap_service variable are provided to me. but when I use those variable to perform simple sql query, the application page does nothing, while same code is doing well with xamp localhost.
please help me.
here is the code :
<?php
$servername = "us-cdbr-iron-east-02.cleardb.net";
$username = "b23807********";
$password = "********";
$dbname = "ad_70723170af1****";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
// sql to create table
$sql = "CREATE TABLE flybird (
id INT(6) UNSIGNED AUTO_INCREMENT PRIMARY KEY,
firstname VARCHAR(30) NOT NULL,
lastname VARCHAR(30) NOT NULL,
email VARCHAR(50),
reg_date TIMESTAMP
)";
if ($conn->query($sql) === TRUE) {
echo "Table flybird created successfully";
} else {
echo "Error creating table: " . $conn->error;
}
$conn->close();
?>
The following error is showing:
Got error 'PHP message: PHP Fatal error: Class 'mysqli' not found in /home/vcap/app/htdocs/table.php on line 8\n.

Answer 1

There is an issue with the php buildpack, you need to explicitly add the mysqli function in your application.
Create a file called .bp-config/options.json. You can customize the php buildpack extensions, check this out for more info.
The contents should contain the following.
{
"PHP_EXTENSIONS": ["mysqli"]
}

Answer 2

you should specify mysqli dependency on composer.json config.
{"require": {
"ext-mysqli": "*"
}
}

Answer 3

I think you need to explicitly add the mysqli function in your application
You have to enable the library in .bp-config/options.json file. Like the example below
EX:
{
"PHP_EXTENSIONS": ["mysqli"]
}
If you don't have this file in your aplication just create it, add the extension and push it to your Bluemix app. (link)
Check this page on developerworks for more information , i think it is the same issue you are having (link)