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@ 2022-07-30T06:23:09Z

<?php

$code = [
    'PO/2022/0001',
    'abc',
    'xyz',
    'PO2022/0001',
    'XY/2022/0002',
    'PO/2022/0232'
];

var_export(
    preg_filter(
        '~^[^/]+\K(?:/[^/]+){2}$~',
        '',
        $code
    )
);

Output
Performance
VLD
References
Branches

var_export: documentation ( source)
preg_filter: documentation ( source)

preferences:dark modelive previewkey bindings

24.9 ms | 405 KiB | 5 Q