--- report2.php.backup	2020-02-28 21:41:24.444108716 +0100
+++ report2.php	2020-02-28 21:52:02.705565974 +0100
@@ -42,6 +42,7 @@
 	'filter_set' =>		[T_ZBX_STR,			O_OPT,	P_SYS,			null,		null],
 	'from' =>			[T_ZBX_RANGE_TIME,	O_OPT,	P_SYS,			null,		null],
 	'to' =>				[T_ZBX_RANGE_TIME,	O_OPT,	P_SYS,			null,		null],
+	'exportFile' =>         [T_ZBX_STR,     O_OPT,  P_SYS,                  null,           null]
 ];
 check_fields($fields);
 validateTimeSelectorPeriod(getRequest('from'), getRequest('to'));
@@ -192,6 +193,7 @@
 					AVAILABILITY_REPORT_BY_TEMPLATE => _('By trigger template')
 				])
 			])
+		->addItem(new CSubmit('exportFile', _('Export to CSV')))
 	));
 
 	/*
@@ -456,6 +458,18 @@
 
 	CArrayHelper::sort($triggers, ['host_name', 'description']);
 
+        if(hasRequest('exportFile')) {
+        	$csvText = "Host Name Problems Ok\n";
+           	foreach ($triggers as $trigger) {
+               	$availability = calculateAvailability($trigger['triggerid'], getRequest('filter_timesince'), getRequest('filter_timetill'));
+               	$csvText .= $trigger['hosts'][0]['name'].";".$trigger['description'].";".sprintf('%.4f%%', $availability['true']).";".sprintf('%.4f%%', $availability['false'])."\n";
+           	}
+           	$filename = 'temp/report2_'.time().".csv";
+           	$file = fopen($filename,'w+');
+           	fwrite($file,$csvText);
+           	fclose($file);
+       	}
+
 	$paging = getPagingLine($triggers, ZBX_SORT_UP, new CUrl('report2.php'));
 
 	foreach ($triggers as $trigger) {
@@ -501,4 +515,25 @@
 		->show();
 }
 
+if (hasRequest('exportFile')) {
+?>
+<script type="text/javascript">
+        function downloadFile(url)
+        {
+            var iframe;
+            iframe = document.getElementById("download-container");
+            if (iframe === null)
+            {
+                iframe = document.createElement('iframe');
+                iframe.id = "download-container";
+                iframe.style.visibility = 'hidden';
+                document.body.appendChild(iframe);
+            }
+            iframe.src = url;
+        }
+        downloadFile('<?=$filename?>');
+</script>
+<?php
+}
+
 require_once dirname(__FILE__).'/include/page_footer.php';