Online PHP editor | rfc for gOPu9

@ 2017-11-01T10:38:04Z

<?php

$start = new DateTime('2017-07-11'); 
$end = new DateTime('2017-08-03');
$diff = $start->diff($end);

$differenceInDays = ($diff->format('%m') * 30) + $diff->format('%d');

// caso houver uma diferença menor de um mês, 
// deve-se verificar se não passou pelo dia 31
if ($diff->format('%m') == 0)
{
    //cria o trigésimo primeiro dia do mês inicial
    $thiryFirstDayOfStartMonth = $start->format('Y-m-31');
    
    // Cria o objeto DateTime do trigésimo primeiro dia do mês inicial
    // Aqui está o "truque", caso o mês possuir apenas 30 dias,
    // como o caso de novembro, a data 31/11/2017 será transformada em 01/12/2017
    // é um comportamento padrão da biblioteca
    $thirtyFirstDay = DateTime::createFromFormat('Y-m-d' , $thiryFirstDayOfStartMonth);
    
    //O trigésimo primeiro dia precisa ser menor que a data final do cálculo.
    if ($thirtyFirstDay < $end)
    {
        //Se data criada for realmente dia 31 do mês, deve-se
        if ($thirtyFirstDay->format('Y-m-d') == $thiryFirstDayOfStartMonth)
        {
            $differenceInDays--;
        }
    }
}

var_dump($differenceInDays);

Output for git.master, git.master_jit, rfc.property-hooks: int(22)

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