Bulk Exporting Data from Codeigniter to CSV using Database Utility Class

问题

Here is my code:

function export_csv()
{
$st = $this->input->get('st');   //Start Date 
$en = $this->input->get('en');   //End Date

$sTable = 'TABLE_NAME';

$this->load->dbutil();

$aColumns = array('tempdisplayid AS ucid','uui','campaign_name','location','caller_id','skill','calltime','answertime','TIMEDIFF(answertime,calltime) as timetoanswer','endtime','talktime','duration','fallback_rule','dialed_number','type','agent','agent_did','disposition','status','hangup_by','transfer','transfer_to','comments','dial_status','customer_status','agent_status','audio','AgentStatus','CustomerStatus','user_response');

$this->db->select('SQL_CALC_FOUND_ROWS '.str_replace(' , ', ' ', implode(', ', $aColumns)), false);

$query = $this->db->get_where($sTable, array('date(calltime) >=' =>$st,'date(calltime) <=' =>$en));

$new_report = $this->dbutil->csv_from_result($query);

write_file('/csv/records-'.$st.'to'.$en.'.csv', $new_report);

$this->load->helper('download'); 

force_download('records-'.$st.'to'.$en.'.csv', $new_report); 

}

There is 64,145 Records in last 30 days. When I try to download the link becomes dead.is there any other method to bulk export unlimited record to csv.

I tested this code upto 30000 after setting ini_set('max_execution_time', 0);It works fine.

Anything other than CSV like xls which can show bulk records.

回答1:

// top of your controller
ini_set('max_execution_time', 0);

// Also you can increase memory
ini_set('memory_limit','2048M');

Download this helper and place in system/helpers/

and finally create csv like this

$this->db->select('*'); 
$query = $this->db->get('your_table');
$this->load->helper('csv');
query_to_csv($query, TRUE, 'filename.csv');

回答2:

I think there is problem in max_execution_time of codeignator

You can increase it by using below code

Go to the file

system/core/CodeIgniter.php

Ans search for set_time_limit you find below code. Here you can increse your time

if (function_exists("set_time_limit") == TRUE AND @ini_get("safe_mode") == 0)
{
    @set_time_limit(300);// increase according to your requirmrnt
}

来源：https://stackoverflow.com/questions/30724404/bulk-exporting-data-from-codeigniter-to-csv-using-database-utility-class