px_date2string

(PECL paradox >= 1.4.0)

px_date2string Converts a date into a string.

Description

string px_date2string ( resource $pxdoc , int $value , string $format )

Turns a date as it stored in the paradox file into human readable format. Paradox dates are the number of days since 1.1.0000. This function is just for convenience. It can be easily replaced by some math and the calendar functions as demonstrated in the example below.

Parameters

pxdoc

Resource identifier of the paradox database as returned by px_new().

value

Value as stored in paradox database field of type PX_FIELD_DATE.

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, L).

Return Values

Returns TRUE on success or FALSE on failure.

Examples

Example #1 Turn a paradox date 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($days+1721425)."\n";
/* px_date2string() outputs the same */
echo px_date2string($px$days"n/d/Y")."\n";

px_delete($px);
?>

The above example will output:

7/15/1917
7/15/1917

See Also

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User Contributed Notes 1 note

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john dot navratil at sbcglobal dot net
3 years ago
Date fields are retrieved as the number of days since 0 A.D. (I think), but not as anything resembling a date.  If you are exporting this data, you must used this function to convert.  Read the schema first to determine which fields are date fields...

<?php
$schema
= $pxdoc->get_schema();

$dateFields = array();
foreach (
$schema as $key => $attrs) {
    if (
$attrs["type"] ==  PX_FIELD_DATE)    // Collect list of "date" columns
       
$dateFields[] = $key;
}
?>

An export to a CSV format, for example, could them be written...

<?php
for ($rec = 0; $rec < $totRecs; ++$rec) {
   
$arr = $pxdoc->get_record($rec);

    foreach (
$dateFields as $key) {
       
$arr[$key] = $pxdoc->date2string($arr[$key], "m/d/Y");
    }

   
fputcsv(STDOUT, $arr);  // STDOUT only available with CLI
}
?>
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