<?php $from_null = (float) null; $from_int = (float) 0; $from_empty_string = (float) ''; $from_numeric_string = (float) '0'; var_dump($from_null === 0.0); // bool(true) var_dump($from_int === 0.0); // bool(true) var_dump($from_empty_string === 0.0 ); // bool(true) var_dump($from_numeric_string === 0.0 ); // bool(true)
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