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@ 2014-01-13T17:00:17Z

<?php

function dataBr($valor, $formato = 'YYYY-MM-dd') {
    if (strlen($valor) == 10) {
        list($dia, $mes, $ano) = explode("/", substr($valor, 0, 10));

        if (checkdate($mes, $dia, $ano))
            return $ano . "-" . $mes . "-" . $dia;
        else
            return "NULL";
    } else
        return "NULL";
}

function diasEntreDatas($dataInicio, $dataFim) {
    list($ano1, $mes1, $dia1) = explode('-', $dataInicio);
    list($ano2, $mes2, $dia2) = explode('-', $dataFim);

    $diferencaSegundos = mktime(0, 0, 0, $mes2, $dia2, $ano2) - mktime(0, 0, 0, $mes1, $dia1, $ano1);

    return intval($diferencaSegundos / (60 * 60 * 24));
}

$dt_inicio = dataBr('21-12-2013', 'YYYY-MM-dd');
$dt_final = dataBr('30-12-2013', 'YYYY-MM-dd');
$qt_dias += diasEntreDatas($dt_inicio, $dt_final) + 1;

print $qt_dias;

Output for git.master, git.master_jit, rfc.property-hooks: Warning: Undefined array key 1 in /in/tgSWp on line 5 Warning: Undefined array key 2 in /in/tgSWp on line 5 Deprecated: checkdate(): Passing null to parameter #1 ($month) of type int is deprecated in /in/tgSWp on line 7 Fatal error: Uncaught TypeError: checkdate(): Argument #2 ($day) must be of type int, string given in /in/tgSWp:7 Stack trace: #0 /in/tgSWp(7): checkdate(NULL, '21-12-2013', NULL) #1 /in/tgSWp(24): dataBr('21-12-2013', 'YYYY-MM-dd') #2 {main} thrown in /in/tgSWp on line 7
Process exited with code 255.

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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