In this example we are going to show you how to How to import excel and CSV file in CodeIgniter framework MySQL PHP.
Here we using 3 files for import data in CodeIgniter framework MySQL PHP:
<?php 
	class Crud extends CI_Controller 
{
	public function __construct()
	{
		parent::__construct();/* call CodeIgniter's default Constructor */
		$this->load->database();/* load database libray manually */
		$this->load->model('Crud_model');/* load Model */
	}
	public function importdata()
	{ 
		$this->load->view('import_data');
		if(isset($_POST["submit"]))
		{
			$file = $_FILES['file']['tmp_name'];
			$handle = fopen($file, "r");
			$c = 0;//
			while(($filesop = fgetcsv($handle, 1000, ",")) !== false)
			{
				$fname = $filesop[0];
				$lname = $filesop[1];
				if($c<>0){					/* SKIP THE FIRST ROW */
					$this->Crud_model->saverecords($fname,$lname);
				}
				$c = $c + 1;
			}
			echo "sucessfully import data !";
				
		}
	}
    	
}
?>
<?php
class Crud_model extends CI_Model 
{
	function saverecords($fname,$lname)
	{
		$query="insert into user values('$fname','$lname')";
		$this->db->query($query);
	}
	
}
<!DOCTYPE html>
<html>
<body>
<form enctype="multipart/form-data" method="post" role="form">
<div class="form-group">
<label for="exampleInputFile">File Upload</label>
<input type="file" name="file" id="file" size="150">
<p class="help-block">Only Excel/CSV File Import.</p>
</div>
<button type="submit" class="btn btn-default" name="submit" value="submit">Upload</button>
</form>
</body>
</html>
Run the program on your browser with URL:
http://localhost/codeIgniter/index.php/Crud/importdata
Here codeIgniter is my folder name. Put your folder name instead of codeIgniter.Rest of things are same.