how to read csv file in jquery using codeigniter framework

Question

suppose this is my csv file

fileempId,lastName,firstName,middleName,street1,street2,city,state,zip,gender,birthDate,ssn,empStatus,joinDate,workStation,locati         


        

Answer 1

Based on your comment that actually you want to upload your CSV file first to your server then check if the CSV fields/headers match to one of your database table fields to insert the row, here the sample code I made:

CSV Reader (based from this library with some adjustments):

parse_lines($lines);
    }

    /**
     * Parse a file containing CSV formatted data.
     *
     * @access    public
     * @param    string
     * @return    array
     */
    function parse_file($p_Filepath) {
        $lines = file($p_Filepath);
        return $this->parse_lines($lines);
    }
    /**
     * Parse an array of text lines containing CSV formatted data.
     *
     * @access    public
     * @param    array
     * @return    array
     */
    function parse_lines($p_CSVLines) {    
        $content = FALSE;
        foreach( $p_CSVLines as $line_num => $line ) {                        
            if( $line != '' ) { // skip empty lines
                $line = trim($line);

                $elements = explode($this->separator, $line);

                if( !is_array($content) ) { // the first line contains fields names
                    $this->fields = $elements;
                    $content = array();
                } else {
                    $item = array();
                    foreach( $this->fields as $id => $field ) {
                        if( isset($elements[$id]) ) {
                            $item[$field] = $elements[$id];
                        }
                    }
                    $content[] = $item;
                }
            }
        }
        return $content;
    }

    /**
     * Get fields
     */
    public function get_fields(){
        return $this->fields;
    }
}

Do upload handler on CI:

public function do_upload()
{
    $config['upload_path'] = './uploads/';
    $config['allowed_types'] = 'csv';
    $config['max_size'] = '100';
    $config['max_width']  = '1024';
    $config['max_height']  = '768';

    $this->load->library('upload', $config);

    if ( ! $this->upload->do_upload('csvfile'))
    {
        $error = array('error' => $this->upload->display_errors());
        $this->load->view('csv_upload', $error);
    }
    else
    {
        $upload_data = $this->upload->data();

        // start to read the CSV file
        $this->load->library('csvreader');
        $file_path = $upload_data['full_path'];

        $csv_data = $this->csvreader->parse_file($file_path); 
        $csv_fields = $this->csvreader->get_fields();

        // list your database table
        $tables = $this->db->list_tables();
        foreach($tables as $table)
        {
            $fields = $this->db->list_fields($table);

            if($fields == $csv_fields) // match to one of database table
            {
                // insert the record
                foreach($csv_data as $row){                        
                    $this->db->insert($table, $row);
                }
            }
        }

        $data = array(
            'upload_data' => $upload_data,
            'csv_data' => $csv_data,
        );

        $this->load->view('upload_success', $data);
    }
}

Download full sample HERE. You can find sample of CSV file inside folder uploads.