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<?php ini_set('date.timezone', 'GMT'); // Sun, 06 Nov 1994 08:49:37 GMT $date = gmmktime(8, 49, 37, 11, 6, 1994); function compare_date_format($date, $constant, $string) { $constant_date = date((defined($constant)) ? constant($constant) : '', $date); $string_date = date($string, $date); var_dump($constant, $constant_date, $string_date, $constant_date === $string_date); } compare_date_format($date, 'DATE_RFC822', 'D, j M y H:i:s O'); compare_date_format($date, 'DATE_RFC850', 'l, d-M-y H:i:s T'); compare_date_format($date, 'DATE_RFC1036', 'D, d M y H:i:s O'); compare_date_format($date, 'DATE_RFC1123', 'D, d M Y H:i:s O'); compare_date_format($date, 'DATE_RFC2109', 'D, d-M-y H:i:s T'); compare_date_format($date, 'DATE_COOKIE', 'D, d-M-Y H:i:s T'); compare_date_format($date, 'DATE_RFC2616', 'D, d M Y H:i:s \G\M\T'); //compare_date_format($date, 'DATE_RFC2965', ''); compare_date_format($date, 'DATE_RFC2822', 'D, j M Y H:i:s O'); compare_date_format($date, 'DATE_RFC5322', 'D, j M Y H:i:s O'); compare_date_format($date, 'DATE_RFC6265', 'D, d M Y H:i:s \G\M\T'); compare_date_format($date, 'DATE_RFC7231', 'D, d M Y H:i:s \G\M\T');
Output for 7.0.19 - 7.0.33, 7.1.5 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.4, 8.3.6 - 8.3.25, 8.4.1 - 8.4.12
string(11) "DATE_RFC822" string(29) "Sun, 06 Nov 94 08:49:37 +0000" string(28) "Sun, 6 Nov 94 08:49:37 +0000" bool(false) string(11) "DATE_RFC850" string(30) "Sunday, 06-Nov-94 08:49:37 GMT" string(30) "Sunday, 06-Nov-94 08:49:37 GMT" bool(true) string(12) "DATE_RFC1036" string(29) "Sun, 06 Nov 94 08:49:37 +0000" string(29) "Sun, 06 Nov 94 08:49:37 +0000" bool(true) string(12) "DATE_RFC1123" string(31) "Sun, 06 Nov 1994 08:49:37 +0000" string(31) "Sun, 06 Nov 1994 08:49:37 +0000" bool(true) string(12) "DATE_RFC2109" string(0) "" string(27) "Sun, 06-Nov-94 08:49:37 GMT" bool(false) string(11) "DATE_COOKIE" string(32) "Sunday, 06-Nov-1994 08:49:37 GMT" string(29) "Sun, 06-Nov-1994 08:49:37 GMT" bool(false) string(12) "DATE_RFC2616" string(0) "" string(29) "Sun, 06 Nov 1994 08:49:37 GMT" bool(false) string(12) "DATE_RFC2822" string(31) "Sun, 06 Nov 1994 08:49:37 +0000" string(30) "Sun, 6 Nov 1994 08:49:37 +0000" bool(false) string(12) "DATE_RFC5322" string(0) "" string(30) "Sun, 6 Nov 1994 08:49:37 +0000" bool(false) string(12) "DATE_RFC6265" string(0) "" string(29) "Sun, 06 Nov 1994 08:49:37 GMT" bool(false) string(12) "DATE_RFC7231" string(29) "Sun, 06 Nov 1994 08:49:37 GMT" string(29) "Sun, 06 Nov 1994 08:49:37 GMT" bool(true)
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 string(11) "DATE_RFC822" string(29) "Sun, 06 Nov 94 08:49:37 +0000" string(28) "Sun, 6 Nov 94 08:49:37 +0000" bool(false) string(11) "DATE_RFC850" string(30) "Sunday, 06-Nov-94 08:49:37 GMT" string(30) "Sunday, 06-Nov-94 08:49:37 GMT" bool(true) string(12) "DATE_RFC1036" string(29) "Sun, 06 Nov 94 08:49:37 +0000" string(29) "Sun, 06 Nov 94 08:49:37 +0000" bool(true) string(12) "DATE_RFC1123" string(31) "Sun, 06 Nov 1994 08:49:37 +0000" string(31) "Sun, 06 Nov 1994 08:49:37 +0000" bool(true) string(12) "DATE_RFC2109" string(0) "" string(27) "Sun, 06-Nov-94 08:49:37 GMT" bool(false) string(11) "DATE_COOKIE" string(32) "Sunday, 06-Nov-1994 08:49:37 GMT" string(29) "Sun, 06-Nov-1994 08:49:37 GMT" bool(false) string(12) "DATE_RFC2616" string(0) "" string(29) "Sun, 06 Nov 1994 08:49:37 GMT" bool(false) string(12) "DATE_RFC2822" string(31) "Sun, 06 Nov 1994 08:49:37 +0000" string(30) "Sun, 6 Nov 1994 08:49:37 +0000" bool(false) string(12) "DATE_RFC5322" string(0) "" string(30) "Sun, 6 Nov 1994 08:49:37 +0000" bool(false) string(12) "DATE_RFC6265" string(0) "" string(29) "Sun, 06 Nov 1994 08:49:37 GMT" bool(false) string(12) "DATE_RFC7231" string(29) "Sun, 06 Nov 1994 08:49:37 GMT" string(29) "Sun, 06 Nov 1994 08:49:37 GMT" bool(true)
Output for 5.4.24 - 5.4.45, 5.5.8 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.18, 7.1.0 - 7.1.4
string(11) "DATE_RFC822" string(29) "Sun, 06 Nov 94 08:49:37 +0000" string(28) "Sun, 6 Nov 94 08:49:37 +0000" bool(false) string(11) "DATE_RFC850" string(30) "Sunday, 06-Nov-94 08:49:37 GMT" string(30) "Sunday, 06-Nov-94 08:49:37 GMT" bool(true) string(12) "DATE_RFC1036" string(29) "Sun, 06 Nov 94 08:49:37 +0000" string(29) "Sun, 06 Nov 94 08:49:37 +0000" bool(true) string(12) "DATE_RFC1123" string(31) "Sun, 06 Nov 1994 08:49:37 +0000" string(31) "Sun, 06 Nov 1994 08:49:37 +0000" bool(true) string(12) "DATE_RFC2109" string(0) "" string(27) "Sun, 06-Nov-94 08:49:37 GMT" bool(false) string(11) "DATE_COOKIE" string(32) "Sunday, 06-Nov-1994 08:49:37 GMT" string(29) "Sun, 06-Nov-1994 08:49:37 GMT" bool(false) string(12) "DATE_RFC2616" string(0) "" string(29) "Sun, 06 Nov 1994 08:49:37 GMT" bool(false) string(12) "DATE_RFC2822" string(31) "Sun, 06 Nov 1994 08:49:37 +0000" string(30) "Sun, 6 Nov 1994 08:49:37 +0000" bool(false) string(12) "DATE_RFC5322" string(0) "" string(30) "Sun, 6 Nov 1994 08:49:37 +0000" bool(false) string(12) "DATE_RFC6265" string(0) "" string(29) "Sun, 06 Nov 1994 08:49:37 GMT" bool(false) string(12) "DATE_RFC7231" string(0) "" string(29) "Sun, 06 Nov 1994 08:49:37 GMT" bool(false)
Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.23, 5.5.0 - 5.5.7
string(11) "DATE_RFC822" string(29) "Sun, 06 Nov 94 08:49:37 +0000" string(28) "Sun, 6 Nov 94 08:49:37 +0000" bool(false) string(11) "DATE_RFC850" string(30) "Sunday, 06-Nov-94 08:49:37 GMT" string(30) "Sunday, 06-Nov-94 08:49:37 GMT" bool(true) string(12) "DATE_RFC1036" string(29) "Sun, 06 Nov 94 08:49:37 +0000" string(29) "Sun, 06 Nov 94 08:49:37 +0000" bool(true) string(12) "DATE_RFC1123" string(31) "Sun, 06 Nov 1994 08:49:37 +0000" string(31) "Sun, 06 Nov 1994 08:49:37 +0000" bool(true) string(12) "DATE_RFC2109" string(0) "" string(27) "Sun, 06-Nov-94 08:49:37 GMT" bool(false) string(11) "DATE_COOKIE" string(30) "Sunday, 06-Nov-94 08:49:37 GMT" string(29) "Sun, 06-Nov-1994 08:49:37 GMT" bool(false) string(12) "DATE_RFC2616" string(0) "" string(29) "Sun, 06 Nov 1994 08:49:37 GMT" bool(false) string(12) "DATE_RFC2822" string(31) "Sun, 06 Nov 1994 08:49:37 +0000" string(30) "Sun, 6 Nov 1994 08:49:37 +0000" bool(false) string(12) "DATE_RFC5322" string(0) "" string(30) "Sun, 6 Nov 1994 08:49:37 +0000" bool(false) string(12) "DATE_RFC6265" string(0) "" string(29) "Sun, 06 Nov 1994 08:49:37 GMT" bool(false) string(12) "DATE_RFC7231" string(0) "" string(29) "Sun, 06 Nov 1994 08:49:37 GMT" bool(false)
Output for 5.1.1 - 5.1.6
string(11) "DATE_RFC822" string(29) "Sun, 06 Nov 1994 08:49:37 GMT" string(28) "Sun, 6 Nov 94 08:49:37 +0000" bool(false) string(11) "DATE_RFC850" string(30) "Sunday, 06-Nov-94 08:49:37 GMT" string(30) "Sunday, 06-Nov-94 08:49:37 GMT" bool(true) string(12) "DATE_RFC1036" string(30) "Sunday, 06-Nov-94 08:49:37 GMT" string(29) "Sun, 06 Nov 94 08:49:37 +0000" bool(false) string(12) "DATE_RFC1123" string(29) "Sun, 06 Nov 1994 08:49:37 GMT" string(31) "Sun, 06 Nov 1994 08:49:37 +0000" bool(false) string(12) "DATE_RFC2109" string(0) "" string(27) "Sun, 06-Nov-94 08:49:37 GMT" bool(false) string(11) "DATE_COOKIE" string(29) "Sun, 06 Nov 1994 08:49:37 GMT" string(29) "Sun, 06-Nov-1994 08:49:37 GMT" bool(false) string(12) "DATE_RFC2616" string(0) "" string(29) "Sun, 06 Nov 1994 08:49:37 GMT" bool(false) string(12) "DATE_RFC2822" string(31) "Sun, 06 Nov 1994 08:49:37 +0000" string(30) "Sun, 6 Nov 1994 08:49:37 +0000" bool(false) string(12) "DATE_RFC5322" string(0) "" string(30) "Sun, 6 Nov 1994 08:49:37 +0000" bool(false) string(12) "DATE_RFC6265" string(0) "" string(29) "Sun, 06 Nov 1994 08:49:37 GMT" bool(false) string(12) "DATE_RFC7231" string(0) "" string(29) "Sun, 06 Nov 1994 08:49:37 GMT" bool(false)
Output for 5.1.0
string(11) "DATE_RFC822" string(0) "" string(28) "Sun, 6 Nov 94 08:49:37 +0000" bool(false) string(11) "DATE_RFC850" string(0) "" string(30) "Sunday, 06-Nov-94 08:49:37 GMT" bool(false) string(12) "DATE_RFC1036" string(0) "" string(29) "Sun, 06 Nov 94 08:49:37 +0000" bool(false) string(12) "DATE_RFC1123" string(0) "" string(31) "Sun, 06 Nov 1994 08:49:37 +0000" bool(false) string(12) "DATE_RFC2109" string(0) "" string(27) "Sun, 06-Nov-94 08:49:37 GMT" bool(false) string(11) "DATE_COOKIE" string(0) "" string(29) "Sun, 06-Nov-1994 08:49:37 GMT" bool(false) string(12) "DATE_RFC2616" string(0) "" string(29) "Sun, 06 Nov 1994 08:49:37 GMT" bool(false) string(12) "DATE_RFC2822" string(0) "" string(30) "Sun, 6 Nov 1994 08:49:37 +0000" bool(false) string(12) "DATE_RFC5322" string(0) "" string(30) "Sun, 6 Nov 1994 08:49:37 +0000" bool(false) string(12) "DATE_RFC6265" string(0) "" string(29) "Sun, 06 Nov 1994 08:49:37 GMT" bool(false) string(12) "DATE_RFC7231" string(0) "" string(29) "Sun, 06 Nov 1994 08:49:37 GMT" bool(false)
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5
string(11) "DATE_RFC822" string(0) "" string(28) "Sun, 6 Nov 94 09:49:37 +0100" bool(false) string(11) "DATE_RFC850" string(0) "" string(30) "Sunday, 06-Nov-94 09:49:37 CET" bool(false) string(12) "DATE_RFC1036" string(0) "" string(29) "Sun, 06 Nov 94 09:49:37 +0100" bool(false) string(12) "DATE_RFC1123" string(0) "" string(31) "Sun, 06 Nov 1994 09:49:37 +0100" bool(false) string(12) "DATE_RFC2109" string(0) "" string(27) "Sun, 06-Nov-94 09:49:37 CET" bool(false) string(11) "DATE_COOKIE" string(0) "" string(29) "Sun, 06-Nov-1994 09:49:37 CET" bool(false) string(12) "DATE_RFC2616" string(0) "" string(29) "Sun, 06 Nov 1994 09:49:37 GMT" bool(false) string(12) "DATE_RFC2822" string(0) "" string(30) "Sun, 6 Nov 1994 09:49:37 +0100" bool(false) string(12) "DATE_RFC5322" string(0) "" string(30) "Sun, 6 Nov 1994 09:49:37 +0100" bool(false) string(12) "DATE_RFC6265" string(0) "" string(29) "Sun, 06 Nov 1994 09:49:37 GMT" bool(false) string(12) "DATE_RFC7231" string(0) "" string(29) "Sun, 06 Nov 1994 09:49:37 GMT" bool(false)
preferences:
174.06 ms | 425 KiB | 5 Q