How to create an array with months

Question

Good afternoon, I am providing maintenance on a code that features a graph, the X axis presents the last 11 months and the current month, who wrote it entered the months manually and wanted to automate, I thought to do it as follows:

$meses = array(date(m)-11, date(m)-10, date(m)-9, date(m)-8, date(m)-7, date(m)-6, date(m)-5, date(m)-4, date(m)-3, date(m)-2, date(m)-1, date(m));

the problem is that doing so the months will be shown in number form and I need it to appear in date(M) format, but the function does not accept subtraction 'date(M)-1';

Answer 1

$meses = array(1 => "Janeiro", 2 => "Fevereiro", 3 => "Março", 4 => "Abril", 5 => "Maio", 6 => "Junho", 7 => "Julho", 8 => "Agosto", 9 => "Setembro", 10 => "Outubro", 11 => "Novembro", 12 => "Dezembro");

afterward:

 echo $meses[date("n")];

Answer 2

It is enough that after calculated the month, convert it into text:

function convert_date($before){
     return DateTime::createFromFormat('!m', (date('m')-$before))->format('F');
}

Then just use it that way:

$meses = array(
     convert_date(11),
     convert_date(10),
     convert_date(9),
     convert_date(8),
     convert_date(7),
     convert_date(6),
     convert_date(5),
     convert_date(4),
     convert_date(3),
     convert_date(2),
     convert_date(1)
 );