html-table-row-export-php

functions.php

<?php function array2csv(array &$array)
{
   if (count($array) == 0) {
     return null;
   }
   ob_start();
   $df = fopen("php://output", 'w');
   fputcsv($df, array_keys(reset($array)));
   foreach ($array as $row) {
      fputcsv($df, $row);
   }
   fclose($df);
   return ob_get_clean();
}
function download_send_headers($filename) {
    // disable caching
    $now = gmdate("D, d M Y H:i:s");
    header("Expires: Tue, 03 Jul 2020 06:00:00 GMT");
    header("Cache-Control: max-age=0, no-cache, must-revalidate, proxy-revalidate");
    header("Last-Modified: {$now} GMT");

    // force download  
    header("Content-Type: application/force-download");
    header("Content-Type: application/octet-stream");
    header("Content-Type: application/download");

    // disposition / encoding on response body
    header("Content-Disposition: attachment;filename={$filename}");
    header("Content-Transfer-Encoding: binary");
}
add_action('wp_ajax_export_pdf','export_csv');
function export_csv() {
	$table_content =  $_POST['all_value']; 
 	download_send_headers("data_export_" . date("Y-m-d") . ".csv");
	// create a file pointer connected to the output stream
	echo array2csv($table_content);
	die;
} 
?>

jquery-with-ajax.js

$('.export-csv').click(function(){
				var nearestRow = $(this).closest('tr');
				// console.log(nearestRow);
				var allValue = [];
				nearestRow.each(function() {
					var eventDate = $(this).find('.event-date').text();
					
					allValue.push(eventDate.trim().replace(/["~!@#$%^&*\(\)_+=`{}\[\]\|\\:;'<>,.\/?"\- \t\r\n]+/g, '-'));
					var eventName = $(this).find('.event-name').text();
					// console.log(eventName.trim().replace(/["~!@#$%^&*\(\)_+=`{}\[\]\|\\:;'<>,.\/?"\- \t\r\n]+/g, '-'));
					allValue.push(eventName.trim().replace(/["~!@#$%^&*\(\)_+=`{}\[\]\|\\:;'<>,.\/?"\- \t\r\n]+/g, '-'));
					
					var eventLocation = $(this).find('.event-location').text();
					
					allValue.push(eventLocation.trim().replace(/["~!@#$%^&*\(\)_+=`{}\[\]\|\\:;'<>,.\/?"\- \t\r\n]+/g, '-'));
					
					var eventInstructor = $(this).find('.event-instructor').text();
					
					allValue.push(eventInstructor.trim().replace(/["~!@#$%^&*\(\)_+=`{}\[\]\|\\:;'<>,.\/?"\- \t\r\n]+/g, '-'));
					
					var approvedRegistration = $(this).find('.apvd-registration').text();
					
					allValue.push(approvedRegistration.trim().replace(/["~!@#$%^&*\(\)_+=`{}\[\]\|\\:;'<>,.\/?"\- \t\r\n]+/g, '-'));
					
					
					var pendingRegistration = $(this).find('.pend-registration').text();
					
					allValue.push(pendingRegistration.trim().replace(/["~!@#$%^&*\(\)_+=`{}\[\]\|\\:;'<>,.\/?"\- \t\r\n]+/g, '-'));
					var notApprovedRegistration = $(this).find('.noapvd-registration').text();
					
					allValue.push(notApprovedRegistration.trim().replace(/["~!@#$%^&*\(\)_+=`{}\[\]\|\\:;'<>,.\/?"\- \t\r\n]+/g, '-'));
					
					var totalAmount = $(this).find('.total-price').text();
					
					allValue.push(totalAmount.trim().replace(/["~!@#$%^&*\(\)_+=`{}\[\]\|\\:;'<>,.\/?"\- \t\r\n]+/g, '-'));
					
					var totalPaid = $(this).find('.total-paid').text();
					
					allValue.push(totalPaid.trim().replace(/["~!@#$%^&*\(\)_+=`{}\[\]\|\\:;'<>,.\/?"\- \t\r\n]+/g, '-'));
					
					var totalDue = $(this).find('.due-amount').text();
					
					allValue.push(totalDue.trim().replace(/["~!@#$%^&*\(\)_+=`{}\[\]\|\\:;'<>,.\/?"\- \t\r\n]+/g, '-'));

				});
/*ajax call*/
				var data = {
					'action': 'export_csv',
					'all_value': allValue
				};

				// since 2.8 ajaxurl is always defined in the admin header and points to admin-ajax.php
				$.post(ajaxurl, data, function(response) {
					console.log(response);
				});
/* ajax call end*/
});