$array = [
'name' => 'Tim',
'age' => 45,
'profession' => "programmer",
'language' => '/PHP/JAVA/',
];
echo json_encode($array) . "<br />";
echo json_encode($array, JSON_UNESCAPED_SLASHES);
/*
run:
{"name":"Tim","age":45,"profession":"programmer","language":"\/PHP\/JAVA\/"}
{"name":"Tim","age":45,"profession":"programmer","language":"/PHP/JAVA/"}
*/