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public function year_to_code($year)
{
$arr[2007] = 'A';
$arr[2008] = 'B';
$arr[2009] = 'C';
$arr[2010] = 'D';
$arr[2011] = 'E';
$arr[2012] = 'F';
$arr[2013] = 'G';
$arr[2014] = 'H';
$arr[2015] = 'I';
$arr[2016] = 'J';
$arr[2017] = 'K';
$arr[2018] = 'L';
$arr[2019] = 'M';
$arr[2020] = 'N';
$arr[2021] = 'O';
return $arr[$year];
}
public function code_to_year($code)
{
$arr['A'] = 2007;
$arr['B'] = 2008;
$arr['C'] = 2009;
$arr['D'] = 2010;
$arr['E'] = 2011;
$arr['F'] = 2012;
$arr['G'] = 2013;
$arr['H'] = 2014;
$arr['I'] = 2015;
$arr['J'] = 2016;
$arr['K'] = 2017;
$arr['L'] = 2018;
$arr['M'] = 2019;
$arr['N'] = 2020;
$arr['O'] = 2021;
return $arr[$code];
}
Префикс для номера заявки. Писал бывший технический директор.