PHP

PHP website starter

A PHP website starter project is avalable at https://github.com/adamschricker/PHP-website-starter. Example file structure and starter pages with starter CSS.

Some Helpful Information

Declare an array

Indexed Array
$php_variable = array("value1", "value2", "value3");

Associated Array
$php_variable = array("key1"=>"value1", "key2"=>"value2", "key3"=>"value1");

General use DB function for query, insert, update, create, delete, etc.

function talk_to_db($dbQuery) {
  //DB Variables
  $hostname = '';
  $username = '';
  $password = '';
  $dbname = '';

  $dbConnection = mysqli_connect(
    $hostname,
    $username,
    $password,
    $dbname
  );

	if (!$dbConnection) {
    die('Could not connect: ' . mysqli_error());
  }

	$queryResult = mysqli_query($dbConnection, $dbQuery);

  if (!$queryResult) {
    printf('Error: %s\n', mysqli_error($dbConnection));
    exit();
  }

  $resultArray = array();
	while ($row = mysqli_fetch_array($queryResult)) {
    array_push($resultArray, $row);
  }

	mysqli_close($dbConnection);

	return $resultArray;
}

Redirect to https

if(!isset($_SERVER["HTTPS"]) || $_SERVER["HTTPS"] != "on") {
    header("Location: https://" . $_SERVER["HTTP_HOST"] . $_SERVER["REQUEST_URI"], TRUE, 301);
    exit;
}

Redirect to no www

if (substr($_SERVER['SERVER_NAME'], 0, 4) === 'www.') {
	header("Location: https://" . substr($_SERVER['SERVER_NAME'], 4) . $_SERVER["REQUEST_URI"], TRUE, 301);
	exit;
}

Redirect when URL does not end in /

if (substr($_SERVER['REQUEST_URI'], -1) !== "/") {
	header("Location: " . $_SERVER['REQUEST_URI'] . "/", TRUE, 301);
	exit;
}

Limit URL to alphanumeric, dash, and forward slash

if (preg_match('/[^a-z0-9\/\-]+/i', $_SERVER['REQUEST_URI'])) {
  http_response_code(404);
  // Change output to 404 page
}

$_SERVER Information
Put this on a test webpage and see what $_SERVER can give you. Useful if you need URL, Server, Client, URL vars, etc.
```
foreach ($_SERVER as $key => $value) {
	echo "key='" . $key . "', value='" . $value . "'<br>";
}
      
```

PHP

PHP website starter

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