laravel 5.1 eloquent query - php

Question

I got a query that works fine in PMA and I'm trying to convert it to Eloquent, but I must be missing something.
Here the SQL query:
SELECT t1.* FROM ppr__child_absence t1
LEFT JOIN ppr__children t3 ON t3.idcode=t1.child_idcode
WHERE t1.id = (SELECT t2.id FROM ppr__child_absence t2
WHERE t2.child_idcode = t1.child_idcode
ORDER BY t2.id DESC LIMIT 1)
AND t3.deleted_at IS NULL
AND $input BETWEEN start AND stop;
and hes is my eloquent query:
$input = Request::all();
$pprs =
DB::table('ppr__child_absence')
->join('ppr__children', function($join) {
$join->on('ppr__children.idcode', '=', 'ppr_children_absence.child_idcode')
->where('ppr__child_absence.child_idcode', '=', DB::raw('SELECT t2.id FROM ppr__child_absence t2
WHERE t2.child_idcode = ppr__child_absence.child_idcode
ORDER BY t2.id DESC LIMIT 1'));})
->whereNull('ppr__children.deleted_at')
->whereBetween($input, array('ppr_children_absence.start','ppr_children_absence.stop'))->get();
I'm keep getting error:
ErrorException in Grammar.php line 58:
strtolower() expects parameter 1 to be string, array given.
Can anyone here lead me to right direction?
Basically user has 1 date input with datepicker and submit button to get result according to the date chosen.
working query here with out errors but no results
$input = Request::all();
$pprs = DB::table('ppr__child_absence')
->select('ppr__child_absence.*')
->join('ppr__children', function($join) {
$join->on('ppr__children.idcode', '=', 'ppr__child_absence.child_idcode')
->where('ppr__child_absence.id', '=', DB::raw('SELECT t2.id FROM ppr__child_absence t2
WHERE t2.child_idcode = ppr__child_absence.child_idcode
ORDER BY t2.id DESC LIMIT 1'));})
->whereNull('ppr__children.deleted_at')
->where('ppr__child_absence.start', '<', $input['ppr_day'])
->where('ppr__child_absence.stop', '>', $input['ppr_day'])->get();

Answer 1

$input = Request::all(); stores all the input fields in an array.
You are using ->whereBetween($input,...) and the first parameter of whereBetween() is expected to be a string (the name of the table column) but you are passing an array.
You didn't give details about the input. Assuming the input contains a field called 'field', the you should use ->whereBetween($input['field'],...) instead

Answer 2

What you seem to want is not what the whereBetween method offers. When using whereBetween the logic is that you want a given column value to be between two input values. The example in the Laravel Query Builder Documentation is chosen well:
// the column 'votes' value should be between 1 and 100
$users = DB::table('users')->whereBetween('votes', [1, 100]);
What you seem to want is to make sure an input value is between two different column values. You can do that by having two separate conditions:
->where('ppr_children_absence.start', '<', $input['value'])
->where('ppr_children_absence.stop', '>', $input['value'])
This will make sure that $input['value']) is between the start and stop column values.