função para somar dias uteis em php

if ( preg_match(“@/@”,$str_data) == 1 ) {
$str_data = implode(“-“, array_reverse(explode(“/”,$str_data)));
}

$array_data = explode(‘-‘, $str_data);
$count_days = 0;
$int_qtd_dias_uteis = 0;

while ( $int_qtd_dias_uteis < $int_qtd_dias_somar ) {
$count_days++;
if ( ( $dias_da_semana = gmdate(‘w’, strtotime(‘+’.$count_days.’ day’, mktime(0, 0, 0, $array_data[1], $array_data[2], $array_data[0]))) ) != ‘0’ && $dias_da_semana != ‘6’ ) {
$int_qtd_dias_uteis++;
}
}

return gmdate(‘d/m/Y’,strtotime(‘+’.$count_days.’ day’,strtotime($str_data)));
}