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+--TEST--
+Bug #51096: Test for "first day" vs "first day of".
+--FILE--
+<?php
+$tests = array(
+ 'first day',
+ 'last day',
+ 'next month',
+ 'first day next month',
+ 'last day next month',
+ 'first day of next month',
+ 'last day of next month'
+);
+
+foreach ( $tests as $test )
+{
+ $result = date_parse( $test );
+ $rel = $result['relative'];
+ echo $test, "\n- month: ", $rel['month'], '; day: ', $rel['day'],
+ '; first-day-of: ', isset( $rel['first_day_of_month'] ) ? 'true' : 'false',
+ '; last-day-of: ', isset( $rel['last_day_of_month'] ) ? 'true' : 'false', "\n";
+ $date = new DateTime( '2010-03-06 15:21 UTC' );
+ echo '- ', $date->format( DateTime::ISO8601 );
+ $date->modify( $test );
+ echo ' -> ', $date->format( DateTime::ISO8601 ), "\n\n";
+}
+?>
+--EXPECT--
+first day
+- month: 0; day: 1; first-day-of: false; last-day-of: false
+- 2010-03-06T15:21:00+0000 -> 2010-03-07T15:21:00+0000
+
+last day
+- month: 0; day: -1; first-day-of: false; last-day-of: false
+- 2010-03-06T15:21:00+0000 -> 2010-03-05T15:21:00+0000
+
+next month
+- month: 1; day: 0; first-day-of: false; last-day-of: false
+- 2010-03-06T15:21:00+0000 -> 2010-04-06T15:21:00+0000
+
+first day next month
+- month: 1; day: 1; first-day-of: false; last-day-of: false
+- 2010-03-06T15:21:00+0000 -> 2010-04-07T15:21:00+0000
+
+last day next month
+- month: 1; day: -1; first-day-of: false; last-day-of: false
+- 2010-03-06T15:21:00+0000 -> 2010-04-05T15:21:00+0000
+
+first day of next month
+- month: 1; day: 0; first-day-of: true; last-day-of: false
+- 2010-03-06T15:21:00+0000 -> 2010-04-01T15:21:00+0000
+
+last day of next month
+- month: 1; day: 0; first-day-of: false; last-day-of: true
+- 2010-03-06T15:21:00+0000 -> 2010-04-30T15:21:00+0000