Laravel 5 WhereIn Not Working - php

Question

I have no idea why my query is suddenly not working (although maybe it was never working to begin with). Is there anything wrong here?
My controller;
$dataset = $postcode_lookup->dataset; // will return "201502_postcode"
$postcode_extract = new PostcodeExtract;
$postcode_extract = $postcode_extract->setTableByDate($dataset);
foreach ($input as $column => $values) {
$postcode_extract->orWhere(function ($query) use ($column, $values) {
$query->whereIn($column, $values);
});
}
/*
* Temporarily print out the raw SQL...
*/
$sql = str_replace(['%', '?'], ['%%', "'%s'"], $postcode_extract->toSql());
$fullSql = vsprintf($sql, $postcode_extract->getBindings());
print_r($fullSql);
exit;
My model;
<?php namespace App\Models;
use Illuminate\Database\Eloquent\Model;
class PostcodeExtract extends Model {
protected $connection = 'postcodes';
public function setTableByDate($selected_tablename)
{
$this->table = $selected_tablename;
// Return $this for method chaining
return $this;
}
public function getTable()
{
if (isset($this->table))
$this->setTableByDate($this->table);
return $this->table;
}
All that the print out of the raw sql is returning is select * from 201502_postcode and is just ignoring the rest of the query.
This is my $input array;
Array
(
[country] => Array
(
[0] => L93000001
[1] => M83000003
)
[county] => Array
(
[0] => 95
)
)
orWhere and whereIn is just being ignored it seems..
--- UPDATE ---
I didn't know about orWhereIn. But having tried this;
foreach ($input as $column => $values) {
$postcode_extract->orWhereIn($column, $values);
print "<br>";
print $column;
print "<br>";
print_r($values);
print "<br>";
}
I still get the same result. It's like this loop is being totally ignored - even though I can get these print's/print_r's to work. The raw SQL is still just select * from 201502_postcode.

Answer 1

Try this
$postcode_extract->orWhereIn($column, $values)
Also, if that doesnt work, try making the first one condition a whereIn and the rest a orWhereIn

Answer 2

Oh this is so frustratingly obvious I think I might cry...
foreach ($input as $column => $values) {
$postcode_extract = $postcode_extract->orWhereIn($column, $values);
}