settings.php

<?php

	function getParameter($line) {
		$firstQuote = strpos($line, "'");
		$secondQuote = strpos($line, "'", $firstQuote+1);
		return(substr($line, $firstQuote + 1, ($secondQuote - $firstQuote - 1)));
	}

	if (file_exists('./connectvalues.php')) {
		$contents = file('./connectvalues.php', FILE_IGNORE_NEW_LINES);
		$valHost 		= getParameter($contents[1]);
		$valUsername 	= getParameter($contents[2]);
		$valPassword 	= getParameter($contents[3]);	
	}
	else 
	{
		$phHost		= "MySQL host name";	// input placeholder
		$phUsername	= "MySQL user account";
		$phPassword	= "MySQL password";
		$valHost		= ""; 					// input value 
		$valUsername	= "";
		$valPassword	= "";
		
	}

	require("./templates/header.php"); 
?>

	<div class="container">
			<?php require "./templates/nav.php" ?>
			<div class="card" style="width: 50%">
			<form method="post" style="padding: 20px" action="./savesettings.php">
				<div class="form-group">
					<label for="host" class="text-primary">DB Hostname</label>
					<input class="form-control" id="host" name="host" placeholder="<?php echo $phHost ?>" value="<?php echo $valHost?>" >
					<label for="name" class="text-primary">DB Username</label>
					<input class="form-control" id="name" name="name" placeholder="<?php echo $phUsername ?>" value="<?php echo $valUsername?>" >
					<label for="password" class="text-primary">DB Password</label>
					<input class="form-control" id="password" name="password" placeholder="<?php echo $phPassword ?>" value="<?php echo $valPassword?>">               
				</div>
					<input  type="submit" class="btn btn-primary" name="submit" value="Save Settings">
			</form>
			</div>
		</div> <!-- container -->
	
	<?php require("./templates/footer.php"); ?>