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<?php
echo '*';
$base = array(
    "123QWERT" => "123QWERT",
    "ABCD123" => "ABCD123",
);

var_dump($base);

$archivo = array(
    "123QWERT" => "123QWERT",
    "AAAA112" => "AAAA112",
);
var_dump($archivo);

$diferencia_nuevos = array_diff_key($archivo, $base);
var_dump($diferencia_nuevos);
$diferencia_nuevos2 = array_diff_key($base, $archivo);
var_dump($diferencia_nuevos2);

$nuevos_base = array(
    "123QWERT" => "123QWERT",
    "AAAA112" => "AAAA112",
    "ABCD123" => "ABCD123",
);

$no_existen = array(
    "ABCD123" => "ABCD123",
);

$archivo_nuevo = array(
    "123QWERT" => "123QWERT",
    "AAAA112" => "AAAA112",
    "ABCD123" => "ABCD123",
);

$actual = array_intersect_key($archivo_nuevo, $no_existen);
var_dump($actual);


$_ = array(array("sku" => "1231212"), array("sku" => "ABC123"));
$_data = (array_combine(array_column($_, "sku"), array_column($_, "sku")));

var_dump($_data["1231212"]);

?>

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