How to use strftime function in php

 'A full textual representation of the day', 'B' => 'Full month name, based on the locale', 'C' => 'Two digit representation of the century (year pided by 100, truncated to an integer)', 'D' => 'Same as "%m/%d/%y"', 'E' => '', 'F' => 'Same as "%Y-%m-%d"', 'G' => 'The full four-digit version of %g', 'H' => 'Two digit representation of the hour in 24-hour format', 'I' => 'Two digit representation of the hour in 12-hour format', 'J' => '', 'K' => '', 'L' => '', 'M' => 'Two digit representation of the minute', 'N' => '', 'O' => '', 'P' => 'lower-case "am" or "pm" based on the given time', 'Q' => '', 'R' => 'Same as "%H:%M"', 'S' => 'Two digit representation of the second', 'T' => 'Same as "%H:%M:%S"', 'U' => 'Week number of the given year, starting with the first Sunday as the first week', 'V' => 'ISO-8601:1988 week number of the given year, starting with the first week of the year with at least 4 weekdays, with Monday being the start of the week', 'W' => 'A numeric representation of the week of the year, starting with the first Monday as the first week', 'X' => 'Preferred time representation based on locale, without the date', 'Y' => 'Four digit representation for the year', 'Z' => 'The time zone offset/abbreviation option NOT given by %z (depends on operating system)', 'a' => 'An abbreviated textual representation of the day', 'b' => 'Abbreviated month name, based on the locale', 'c' => 'Preferred date and time stamp based on local', 'd' => 'Two-digit day of the month (with leading zeros)', 'e' => 'Day of the month, with a space preceding single digits', 'f' => '', 'g' => 'Two digit representation of the year going by ISO-8601:1988 standards (see %V)', 'h' => 'Abbreviated month name, based on the locale (an alias of %b)', 'i' => '', 'j' => 'Day of the year, 3 digits with leading zeros', 'k' => 'Hour in 24-hour format, with a space preceding single digits', 'l' => 'Hour in 12-hour format, with a space preceding single digits', 'm' => 'Two digit representation of the month', 'n' => 'A newline character ("\n")', 'o' => '', 'p' => 'UPPER-CASE "AM" or "PM" based on the given time', 'q' => '', 'r' => 'Same as "%I:%M:%S %p"', 's' => 'Unix Epoch Time timestamp', 't' => 'A Tab character ("\t")', 'u' => 'ISO-8601 numeric representation of the day of the week', 'v' => '', 'w' => 'Numeric representation of the day of the week', 'x' => 'Preferred date representation based on locale, without the time', 'y' => 'Two digit representation of the year', 'z' => 'Either the time zone offset from UTC or the abbreviation (depends on operating system)', '%' => 'A literal percentage character ("%")', ); // Results. $strftimeValues = array(); // Evaluate the formats whilst suppressing any errors. foreach($strftimeFormats as $format => $description){ if (False !== ($value = @strftime("%{$format}"))){ $strftimeValues[$format] = $value; } } // Find the longest value. $maxValueLength = 2 + max(array_map('strlen', $strftimeValues)); // Report known formats. foreach($strftimeValues as $format => $value){ echo "Known format : '{$format}' = ", str_pad("'{$value}'", $maxValueLength), " ( {$strftimeFormats[$format]} )\n"; } // Report unknown formats. foreach(array_diff_key($strftimeFormats, $strftimeValues) as $format => $description){ echo "Unknown format : '{$format}' ", str_pad(' ', $maxValueLength), ($description ? " ( {$description} )" : ''), "\n"; } ?>