crop-monitor/core/cache/includes/elements/modsnippet/30.include.cache.php

<?php
$con = mysqli_connect("localhost", "root", "R3M0T31", "cropmonitor");
// Check connection
if (mysqli_connect_errno())
	{
	echo "Failed to connect to MySQL: " . mysqli_connect_error();
	}

$result = mysqli_query($con, "SELECT * FROM `plant_specifications`");

// mysqli_query returns false if something went wrong with the query

if ($result === FALSE)
	{
	die(mysqli_error($con)); // TODO: better error handling
	}
  else
	{
?>

    <div class="col-md-4 form-group">
        <small id="lab_no" class="form-text text-muted">Crop Type <span class="error">*</span></small>
        <div><select class="form-control form-control-sm" name="crop_type" id="crop_type" required>
	    <option>Select the type of Crop...</option>

<?php
	while ($row = mysqli_fetch_array($result))
		{
		echo "<option id=" . $row['id'] . ">" . $row['plant_type'] . "</option>";
		}
?>

	</select></div>
	</div>
<?php
}

mysqli_close($con);
return;