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CollectionModify::unset — Unset the value of document fields
Removes attributes from documents in a collection.
fieldsThe attributes to remove from documents in a collection.
CollectionModify object that can be used for further processing.
示例 #1 mysql_xdevapi\CollectionModify::unset() example
<?php
$res = $coll->modify('job like :job_name')->unset(["age", "name"])->bind(['job_name' => 'Plumber'])->execute();
?>