px_open_fp(3) [php man page]

PX_OPEN_FP(3)															     PX_OPEN_FP(3)

px_open_fp - Open paradox database

SYNOPSIS

       bool px_open_fp (resource  $pxdoc, resource  $file)

DESCRIPTION

	Open an existing paradox database file. The actual file has to be opened before with fopen(3). This function can also be used to open pri-
       mary index files and tread them like a paradox database. This is supported for those who would like to investigate a primary index. It can-
       not be used to accelerate access to a database file.

PARAMETERS

	      o $pxdoc
		- Resource identifier of the paradox database as returned by px_new(3).

	      o $file
		-$file	is  the  return  value from fopen(3) with the actual database file as parameter. Make sure the database is writable if you
		plan to update or insert records.

RETURN VALUES

	Returns TRUE on success or FALSE on failure.

SEE ALSO

       fopen(3), The example at px_new(3).

PHP Documentation Group 													     PX_OPEN_FP(3)

PX_TIMESTAMP2STRING(3)													    PX_TIMESTAMP2STRING(3)

px_timestamp2string - Converts the timestamp into a string.

SYNOPSIS

       string px_timestamp2string (resource  $pxdoc, float  $value, string  $format)

DESCRIPTION

	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.

PARAMETERS

	      o $pxdoc
		- Resource identifier of the paradox database.

	      o $value
		- Value as stored in paradox database field of type PX_FIELD_TIME, or PX_FIELD_TIMESTAMP.

	      o $format
		- String format similar to the format used by date(3). The placeholders support by this function is a subset of those supported by
		date(3) (Y, y, m, n, d, j, H, h, G, g, i, s, A, a, L).

RETURN VALUES

	Returns TRUE on success or FALSE on failure.

EXAMPLES

       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)."
";

	      /* 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")."
";

	      px_delete($px);
	      ?>

	      The above example will output:

	      7/15/1917
	      7/15/1917 01:00:00

	The Julian day count as passed to jdtogregorian(3) 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.

SEE ALSO

       px_date2string(3), jdtogregorian(3).

PHP Documentation Group 												    PX_TIMESTAMP2STRING(3)