Php/docs/function.px-timestamp2string
px_timestamp2string
(PECL paradox >= 1.4.0)
px_timestamp2string — Converts the timestamp into a string
说明
px_timestamp2string
( resource $pxdoc
, float $value
, string $format
) : string
Turns a timestamp as it stored in the paradox file into human readable format. Paradox timestamps are the number of miliseconds since 0001-01-02. This function is just for convenience. It can be easily replaced by some math and the calendar functions as demonstrated in the following example.
参数
pxdoc- Resource identifier of the paradox database.
value- Value as stored in paradox database field of type PX_FIELD_TIME, or PX_FIELD_TIMESTAMP.
format- String format similar to the format used by date(). The placeholders support by this function is a subset of those supported by date() (Y, y, m, n, d, j, H, h, G, g, i, s, A, a, L).
返回值
成功时返回 true， 或者在失败时返回 false。
范例
Example #1 Turn a paradox timestamp into a human readable form
<?php$px = px_new();/* make up a date as it could be stored in *//* a date field of a paradox db. *//* 700000 days since 1.1.0000. */$days = 700000;/* Use the calendar functions to print a *//* human readable format of the date */echo jdtogregorian($days+1721425)."\n";/* Turn it into a timestamp as it stored in a paradox database *//* Timestamps are stored in miliseconds since 0001-01-02 */$stamp = $days * 86400.0 * 1000.0;/* Add one hour */$stamp += 3600000.0;/* The following will output '7/15/1917 01:00:00'. */echo px_timestamp2string($px, $stamp, "n/d/Y H:i:s")."\n";px_delete($px);?>
以上例程会输出：
7/15/1917 7/15/1917 01:00:00
The Julian day count as passed to jdtogregorian() has a different base of 1.1.4714 b.c. and must therefore be calculated by adding 1721425 to the day count used in the paradox file. Turning the day count into a timestamp is easily done by multiplying with 86400000.0 to obtain miliseconds.
参见
- px_date2string() - Converts a date into a string
- jdtogregorian() - 转变一个Julian Day计数为Gregorian历法日期
