When i try to load my businessHours from php
i get 
but when I paste manually in businessHours the JSON returned by PHP it work fine.

json is:
[
{
"daysOfWeek":"[0]",
"startTime":"09:00:00",
"endTime":"19:00:00"
},
{
"daysOfWeek":"[1]",
"startTime":"09:00:00",
"endTime":"10:00:00"
},
{
"daysOfWeek":"[2]",
"startTime":"09:00:00",
"endTime":"10:00:00"
},
{
"daysOfWeek":"[3]",
"startTime":"09:00:00",
"endTime":"14:00:00"
},
{
"daysOfWeek":"[4]",
"startTime":"09:00:00",
"endTime":"14:00:00"
},
{
"daysOfWeek":"[5]",
"startTime":"09:00:00",
"endTime":"14:00:00"
},
{
"daysOfWeek":"[6]",
"startTime":"09:00:00",
"endTime":"19:00:00"
}
]
I don't know what is wrong.
my JS code is: businessHours: { url: 'classes/load-orariapertura.php' }
PHP code is: https://pastebin.com/M9yL9DQn