Add sorting

sales-by-days-to-show-by-performance.php

@@ -1,4 +1,5 @@
 <?php
+date_default_timezone_set('UTC');
 
 require_once( 'generic-report-parser.php' );
 
@@ -30,11 +31,18 @@ function summarise_sales_report( $filename, $first_show_dates ) {
 		foreach( $_performances as $_performance => &$_weeks ) {
 			krsort( $_weeks );
 		}
+		uksort( $_performances, '_date_sort_helper' );
 	}
 
 	return $_summary;
 }
 
+function _date_sort_helper( $a, $b ) {
+	$_date_a = strtotime( $a );
+	$_date_b = strtotime( $b );	
+	return $_date_a - $_date_b;
+}
+
 function graph_sales_for_show( $show_sales, $sales_per_char = 25 ) {
 
 	foreach( $show_sales as $_show => $_performances ) {
@@ -82,6 +90,7 @@ function csv_sales_for_show( $show_sales, $show ) {
 		'A Dark & Stormy Night' => '2015-03-26',
 		'Its All Greek To Me' => '2016-03-31',
 		'Step Right Up' => '2017-03-23',
+		'In The Same Boat' => '2018-03-22',
 	)
 );
 graph_sales_for_show( $__summary );
@@ -91,14 +100,15 @@ function csv_sales_for_show( $show_sales, $show ) {
 		'A Dark & Stormy Night' => '2015-03-26',
 		'Its All Greek To Me' => '2016-03-31',
 		'Step Right Up' => '2017-03-23',
+		'In The Same Boat' => '2018-03-22',
 	)
 );
 */
 $__summary = summarise_sales_report(
-	realpath( 'Sales_Listing-_Online_-_Box_Office.csv' ),
+	realpath( 'Sales_Listing__Online___Box_Office.csv' ),
 	array(
-		'Step Right Up' => '2017-03-23',
+		'In The Same Boat' => '2018-03-22',
 	)
 );
 graph_sales_for_show( $__summary );
-csv_sales_for_show( $__summary,	'Step Right Up' );
+csv_sales_for_show( $__summary,	'In The Same Boat' );