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<?php echo http_build_query(array("foo" => new DateTime));
Output for 7.3.0rc6
foo%5Bdate%5D=2014-02-24+19%3A08%3A04.000092&foo%5Btimezone_type%5D=3&foo%5Btimezone%5D=Europe%2FAmsterdam
Output for 7.3.0rc4
foo%5Bdate%5D=2014-02-24+19%3A08%3A04.002002&foo%5Btimezone_type%5D=3&foo%5Btimezone%5D=Europe%2FAmsterdam
Output for 7.3.0rc3
foo%5Bdate%5D=2014-02-24+19%3A08%3A04.091806&foo%5Btimezone_type%5D=3&foo%5Btimezone%5D=Europe%2FAmsterdam
Output for 7.3.0beta1
foo%5Bdate%5D=2014-02-24+19%3A08%3A04.001495&foo%5Btimezone_type%5D=3&foo%5Btimezone%5D=Europe%2FAmsterdam
Output for 7.3.0alpha1
foo%5Bdate%5D=2014-02-24+19%3A08%3A04.003305&foo%5Btimezone_type%5D=3&foo%5Btimezone%5D=Europe%2FAmsterdam
Output for 7.2.8
foo%5Bdate%5D=2014-02-24+19%3A08%3A04.003570&foo%5Btimezone_type%5D=3&foo%5Btimezone%5D=Europe%2FAmsterdam
Output for 7.2.6
foo%5Bdate%5D=2014-02-24+19%3A08%3A04.004615&foo%5Btimezone_type%5D=3&foo%5Btimezone%5D=Europe%2FAmsterdam
Output for 7.2.0
foo%5Bdate%5D=2014-02-24+19%3A08%3A04.002651&foo%5Btimezone_type%5D=3&foo%5Btimezone%5D=Europe%2FAmsterdam
Output for 7.1.20
foo%5Bdate%5D=2014-02-24+19%3A08%3A04.004067&foo%5Btimezone_type%5D=3&foo%5Btimezone%5D=Europe%2FAmsterdam
Output for 7.1.10
foo%5Bdate%5D=2014-02-24+19%3A08%3A04.003965&foo%5Btimezone_type%5D=3&foo%5Btimezone%5D=Europe%2FAmsterdam
Output for 7.1.7
foo%5Bdate%5D=2014-02-24+19%3A08%3A04.003361&foo%5Btimezone_type%5D=3&foo%5Btimezone%5D=Europe%2FAmsterdam
Output for 7.1.6
foo%5Bdate%5D=2014-02-24+19%3A08%3A04.009711&foo%5Btimezone_type%5D=3&foo%5Btimezone%5D=Europe%2FAmsterdam
Output for 7.1.5
foo%5Bdate%5D=2014-02-24+19%3A08%3A04.012580&foo%5Btimezone_type%5D=3&foo%5Btimezone%5D=Europe%2FAmsterdam
Output for 7.1.0
foo%5Bdate%5D=2014-02-24+19%3A08%3A04.004087&foo%5Btimezone_type%5D=3&foo%5Btimezone%5D=Europe%2FAmsterdam
Output for 5.4.30 - 5.4.45, 5.5.14 - 7.0.20
foo%5Bdate%5D=2014-02-24+19%3A08%3A04.000000&foo%5Btimezone_type%5D=3&foo%5Btimezone%5D=Europe%2FAmsterdam
Output for 5.3.0 - 5.4.29, 5.5.0 - 5.5.13
foo%5Bdate%5D=2014-02-24+19%3A08%3A04&foo%5Btimezone_type%5D=3&foo%5Btimezone%5D=Europe%2FAmsterdam
Output for 5.2.0 - 5.2.17
Output for 5.0.0 - 5.1.6
Fatal error: Class 'DateTime' not found in /in/ZaFWp on line 2
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: http_build_query() in /in/ZaFWp on line 2
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: http_build_query() in /in/ZaFWp on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: http_build_query() in /in/ZaFWp on line 2