date_sunrise
(PHP 5)
date_sunrise — Returns time of sunrise for a given day and location
說明
mixed date_sunrise
( int $timestamp
[, int $format
[, float $latitude
[, float $longitude
[, float $zenith
[, float $gmt_offset
]]]]] )
date_sunrise() returns the sunrise time for a given day (specified as a timestamp ) and location.
參數
- timestamp
-
The timestamp of the day from which the sunrise time is taken.
- format
-
format constants constant description example SUNFUNCS_RET_STRING returns the result as string 16:46 SUNFUNCS_RET_DOUBLE returns the result as float 16.78243132 SUNFUNCS_RET_TIMESTAMP returns the result as integer (timestamp) 1095034606 - latitude
-
Defaults to North, pass in a negative value for South. See also: date.default_latitude
- longitude
-
Defaults to East, pass in a negative value for West. See also: date.default_longitude
- zenith
-
Default: date.sunrise_zenith
- gmtoffset
-
Specified in hours.
Return值
Returns the sunrise time in a specified format on success, or FALSE on failure.
錯誤/例外
如果時區無效，每個對日期／時間函式的呼叫都會產生一個 E_NOTICE 訊息，如果使用系統設定或 TZ 環境變數則會產生 E_STRICT 消息。參見 date_default_timezone_set()
更新日誌
| 版本 | 說明 |
|---|---|
| 5.1.0 | 現在發出 E_STRICT 和 E_NOTICE 時區錯誤。 |
範例
Example#1 date_sunrise() example
<?php
/* calculate the sunrise time for Lisbon, Portugal
Latitude: 38.4 North
Longitude: 9 West
Zenith ~= 90
offset: +1 GMT
*/
echo date("D M d Y"). ', sunrise time : ' .date_sunrise(time(), SUNFUNCS_RET_STRING, 38.4, -9, 90, 1);
?>
上例的輸出類似於：
Mon Dec 20 2004, sunrise time : 08:54