checkdate | PHP 3.0
bool checkdate(int month, int day, int year) |
Returns true if passed a valid date in the Gregorian calendar.

date | PHP 3.0
string date(string format[, int timestamp]) |
Formats a local time/date.

getdate | PHP 3.0
array getdate([int timestamp]) |
Gets date/time information.

gettimeofday | PHP 3.0.7
array gettimeofday(void) |
Returns the current time as array.

gmdate | PHP 3.0
string gmdate(string format[, int timestamp]) |
Formats a GMT/UTC date/time.

gmmktime | PHP 3.0
int gmmktime(int hour, int min, int sec, int mon, int day, int year) |
Gets Unix timestamp for a GMT date.

gmstrftime | PHP 3.0.12
string gmstrftime(string format[, int timestamp]) |
Formats a GMT/UCT time/date according to locale settings.

localtime | PHP 4.0
array localtime([int timestamp[, bool associative_array]]) |
Returns the results of the C system call localtime as an associative array if the associative_array argument is set to 1 or as a regular array.

microtime | PHP 3.0
string microtime(void) |
Returns a string containing the current time in seconds and microseconds.

mktime | PHP 3.0
int mktime(int hour, int min, int sec, int mon, int day, int year) |
Gets Unix timestamp for a date.

strftime | PHP 3.0
string strftime(string format[, int timestamp]) |
Formats a local time/date according to locale settings.

strtotime | PHP 3.0.12
int strtotime(string time, int now) |
Converts string representation of date and time to a timestamp.

time | PHP 3.0
int time(void) |
Returns current Unix timestamp.