Added monitor.php

This file is used in the ajax call that runs every second while a job
is running to retrieve the last line of progress.info which is then
broken into an array and used to display status information

www/public_html/monitor.php

@@ -0,0 +1,49 @@
+<?php
+$line = '';
+
+$f = fopen('/etc/osid/system/progress.info', 'r');
+$cursor = -1;
+
+fseek($f, $cursor, SEEK_END);
+$char = fgetc($f);
+
+/**
+ * Trim trailing newline chars of the file
+ */
+while ($char === "\n" || $char === "\r") {
+    fseek($f, $cursor--, SEEK_END);
+    $char = fgetc($f);
+}
+
+/**
+ * Read until the start of file or first newline char
+ */
+while ($char !== false && $char !== "\n" && $char !== "\r") {
+    /**
+     * Prepend the new char
+     */
+    $line = $char . $line;
+    fseek($f, $cursor--, SEEK_END);
+    $char = fgetc($f);
+}
+
+//explode returned line into array
+$LineArray = explode(" ", $line);
+
+//create percentage integer
+$PercentCompleted = str_replace("[", "", $LineArray[0]);
+$PercentCompleted = str_replace("%", "", $PercentCompleted);
+
+//create total file size
+$TotalFileSize = str_replace("Mb]", "", $LineArray[2]);
+
+//create file size written
+$FileSizeWritten = str_replace("(", "", $LineArray[5]);
+$FileSizeWritten = str_replace("Mb)", "", $FileSizeWritten);
+
+//create time remaining
+$TimeRemaining = $LineArray[7];
+
+//output delimited string
+echo $PercentCompleted . "|" . $TotalFileSize . "|" . $FileSizeWritten . "|" . $TimeRemaining;
+?>