- array_merge: documentation ( source)
- var_export: documentation ( source)
- array_unique: documentation ( source)
<?php
$array1 = [
(object) ["email" => "gffggfg"],
(object) ["email" => "wefwef@test.it"],
(object) ["email" => "wefewf"],
];
$array2 = [
(object) ["email" => "gffggfg@test.it"],
(object) ["email" => "wefwef"],
(object) ["email" => "wefewf"],
];
var_export(
array_unique(array_merge($array1, $array2))
);