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@ 2022-07-10T05:08:54Z

<?php

$date = "2022-01-02 00:00:00";

$startOfYear = DateTime::createFromFormat('!Y+', $date);
var_export(
    1 + (int) ($startOfYear->diff(new DateTime($date))->days / 7)
);

Output
Performance
VLD
References
Branches

var_export: documentation ( source)

preferences:dark modelive previewkey bindings

22.46 ms | 1246 KiB | 5 Q