xref: /PHP-8.0/ext/date/tests/date_diff.phpt (revision f8d79582) 
1--TEST--
2Extensive test for date_diff().
3--SKIPIF--
4<?php
5if (getenv("SKIP_SLOW_TESTS")) die("skip slow test");
6?>
7--INI--
8date.timezone=UTC
9--FILE--
10<?php
11$ok = 0;
12define( 'COUNT', 120 );
13$d0 = new DateTime('2009-11-20');
14for ( $i = 0; $i < COUNT * 12; $i++ )
15{
16    $d = clone $d0;
17    $dates[$i] = $d->add( new DateInterval( "P{$i}D" ) );
18}
19
20for ( $i = 0; $i < COUNT; $i++)
21{
22//	echo $dates[$i]->format( "Y-m-d\n" );
23    for ( $j = 0; $j < COUNT * 12; $j++)
24    {
25        $diff = date_diff( $dates[$i], $dates[$j] );
26        /*
27        printf( "\t%s %s %3d %s\n",
28            $dates[$i]->format( 'Y-m-d' ),
29            $dates[$j]->format( 'Y-m-d' ),
30            $diff->format( '%a' ),
31            $diff->format( '%y-%m-%d' )
32        );
33        */
34
35        $current = clone $dates[$i];
36        $int = new DateInterval( $diff->format( 'P%yY%mM%dD' ) );
37        if ( $current > $dates[$j] )
38        {
39            $current->sub( $int );
40        }
41        else
42        {
43            $current->add( $int );
44        }
45        if ( $current != $dates[$j] )
46        {
47            echo "FAIL: ",
48                $dates[$i]->format( 'Y-m-d' ), " + ",
49                $int->format( '%y-%m-%d' ), " = ",
50                $current->format( 'Y-m-d' ), " (",
51                $dates[$j]->format( 'Y-m-d' ), ")\n";
52        }
53        else
54        {
55            $ok++;
56        }
57    }
58}
59
60echo $ok, "\n";
61?>
62--EXPECT--
63172800
64