Online PHP editor | output for FRsXA

@ 2017-07-09T13:59:36Z

<?php

function shift_datetimeobject($begin1, $end1, $begin2) {

    $dt_begin1 = new DateTime($begin1);
    $dt_end1 =  new DateTime($end1);

    $span = $dt_begin1->diff($dt_end1);

    $dt_return = new DateTime($begin2);
    return array($dt_return->add($span), $span);
}
function shift_timestamp($begin1, $end1, $begin2) {

    $dt_begin1 = new DateTime($begin1);
    $st_begin1 = $dt_begin1->getTimestamp();

    $dt_end1 =  new DateTime($end1);
    $st_end1 = $dt_end1->getTimestamp();

    $span = $st_end1 - $st_begin1;

    $dt_begin2 = new DateTime($begin2);
    $st_begin2 = $dt_begin2->getTimestamp();

    $st_end2 = $st_begin2 + $span;
    $dt_end2 = new DateTime();
    return $dt_end2->setTimestamp($st_end2);
}

$params = array(
    array('2012-05-07', '2012-06-01', '2012-05-21'),
    array('2012-06-11', '2012-07-13', '2012-06-18'),
    array('2012-06-25', '2012-07-27', '2012-07-02'),
    array('2012-07-09', '2012-07-27', '2012-07-16'),
);
foreach ($params as $p) {
    $erg_object = shift_datetimeobject($p[0], $p[1], $p[2]);
    $erg_stamp  =      shift_timestamp($p[0], $p[1], $p[2]);
    printf("Params: %s, %s, %s\n", $p[0], $p[1], $p[2]);
    printf('$erg_stamp     = %s' . "\n", $erg_stamp->format('Y-m-d'));
    printf('$erg_object[0] = %s' . "\n", $erg_object[0]->format('Y-m-d'));
    printf("span (object)  = %s\n", $erg_object[1]->format('%a days %H:%I:%S'));
    if ($erg_object[0] == $erg_stamp) {
        echo "OK";
    } else {
        echo "WRONG!";
    }
    echo "\n\n";
}

Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: Params: 2012-05-07, 2012-06-01, 2012-05-21 $erg_stamp = 2012-06-15 $erg_object[0] = 2012-06-15 span (object) = 25 days 00:00:00 OK Params: 2012-06-11, 2012-07-13, 2012-06-18 $erg_stamp = 2012-07-20 $erg_object[0] = 2012-07-20 span (object) = 32 days 00:00:00 OK Params: 2012-06-25, 2012-07-27, 2012-07-02 $erg_stamp = 2012-08-03 $erg_object[0] = 2012-08-04 span (object) = 32 days 00:00:00 WRONG! Params: 2012-07-09, 2012-07-27, 2012-07-16 $erg_stamp = 2012-08-03 $erg_object[0] = 2012-08-03 span (object) = 18 days 00:00:00 OK
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Params: 2012-05-07, 2012-06-01, 2012-05-21 $erg_stamp = 2012-06-15 $erg_object[0] = 2012-06-15 span (object) = 25 days 00:00:00 OK Params: 2012-06-11, 2012-07-13, 2012-06-18 $erg_stamp = 2012-07-20 $erg_object[0] = 2012-07-20 span (object) = 32 days 00:00:00 OK Params: 2012-06-25, 2012-07-27, 2012-07-02 $erg_stamp = 2012-08-03 $erg_object[0] = 2012-08-04 span (object) = 32 days 00:00:00 WRONG! Params: 2012-07-09, 2012-07-27, 2012-07-16 $erg_stamp = 2012-08-03 $erg_object[0] = 2012-08-03 span (object) = 18 days 00:00:00 OK

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