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Improve README.md file for script to insert load environment variable co… #22

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43 changes: 27 additions & 16 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -124,7 +124,7 @@ sudo sed -i 's/172.20.1.101/localhost/g' /var/www/html/index.php
Create an `.env` file in the root of your project folder.

```sh
cat > /var/www/html/.env <<-EOF
sudo tee /var/www/html/.env <<-EOF
DB_HOST=localhost
DB_USER=ecomuser
DB_PASSWORD=ecompassword
Expand All @@ -135,25 +135,28 @@ sudo sed -i 's/172.20.1.101/localhost/g' /var/www/html/index.php

Update the `index.php` file to load the environment variables from the `.env` file and use them to connect to the database.

```php
Create a temporary file /tmp/replacement_code_file with php function to load environment variables.

```sh
cat > /tmp/replacement_code_file <<-EOF
<?php
// Function to load environment variables from a .env file
function loadEnv($path)
function loadEnv(\$path)
{
if (!file_exists($path)) {
if (!file_exists(\$path)) {
return false;
}

$lines = file($path, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
foreach ($lines as $line) {
if (strpos(trim($line), '#') === 0) {
\$lines = file(\$path, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
foreach (\$lines as \$line) {
if (strpos(trim(\$line), '#') === 0) {
continue;
}

list($name, $value) = explode('=', $line, 2);
$name = trim($name);
$value = trim($value);
putenv(sprintf('%s=%s', $name, $value));
list(\$name, \$value) = explode('=', \$line, 2);
\$name = trim(\$name);
\$value = trim(\$value);
putenv(sprintf('%s=%s', \$name, \$value));
}
return true;
}
Expand All @@ -162,15 +165,23 @@ sudo sed -i 's/172.20.1.101/localhost/g' /var/www/html/index.php
loadEnv(__DIR__ . '/.env');

// Retrieve the database connection details from environment variables
$dbHost = getenv('DB_HOST');
$dbUser = getenv('DB_USER');
$dbPassword = getenv('DB_PASSWORD');
$dbName = getenv('DB_NAME');
\$dbHost = getenv('DB_HOST');
\$dbUser = getenv('DB_USER');
\$dbPassword = getenv('DB_PASSWORD');
\$dbName = getenv('DB_NAME');

?>

EOF
```
ON a multi-node setup, remember to provide the IP address of the database server in the .env file.

Insert the temporary file code block in index.php after line 104 and remove the file.

```sh
sudo sed -i -e '104r /tmp/replacement_code_file' /var/www/html/index.php

rm /tmp/replacement_code_file
```

7. Test

Expand Down