- print_r: documentation ( source)
- array_unique: documentation ( source)
<?php
$qmas=[
0=>[ "spr_id"=>"10,11" ],
1=>[ "spr_id"=>"13" ],
2=>[ "spr_id"=>"11,12" ],
4=>[ "spr_id"=>"13" ]
];
$qmas = array_unique($qmas, SORT_REGULAR);
print_r($qmas);