- var_dump: documentation ( source)
- array_unique: documentation ( source)
- array_walk: documentation ( source)
<?php
$clashes = [
[
"s1_id" => 26,
"s2_id" => 27
],
[
"s1_id" => 27,
"s2_id" => 27
]
];
array_walk($clashes, function (&$item, $key) {
$item = array_unique($item);
}, array());
var_dump($clashes);