Online PHP editor | output for g7K55

@ 2014-03-28T10:32:48Z

<?php

function add_weeks($weeks = 1, $base = 'now')
{
    // normalise base to a unix timestamp
    if (!is_string($base)) {
        $base = intval($base);
    } else {
        $base = strtotime($base);
    }

    // get the date one week from the base
    $result = strtotime("@{$base} +{$weeks} weeks");

    // if it falls in a different month, get the last day of the base month
    if (date('n', $base) !== date('n', $result)) {
        $result = strtotime("last day of " . date('Y-m', $base));
    }

    return $result;
}

echo date('Y-m-d', add_weeks(1)) . "\n";
echo date('Y-m-d', add_weeks(2)) . "\n";
echo date('Y-m-d', add_weeks(1, '2012-06-18')) . "\n";
echo date('Y-m-d', add_weeks(2, '2012-06-18')) . "\n";

Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 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 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: 2014-03-31 2014-03-31 2012-06-25 2012-06-30
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 2014-03-31 2014-03-31 2012-06-25 2012-06-30
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17: 1970-01-01 1970-01-01 2012-06-25 1970-01-01
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5: 1970-01-01 1970-01-01 1970-01-01 1970-01-01

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