File: vendor/wp-coding-standards/wpcs/WordPress/Docs/WhiteSpace/CastStructureSpacingStandard.xml

<documentation title="Cast Structure Spacing">
    <standard>
    <![CDATA[
    A type cast should be preceded by whitespace.
    There is only one exception to this rule: when the cast is preceded by the spread operator there should be no space between the spread operator and the cast.
    ]]>
    </standard>
    <code_comparison>
        <code title="Valid: space before typecast.">
        <![CDATA[
$a =<em> </em>(int) '420';

// No space between spread operator and cast.
$a = function_call( <em>...(array)</em> $mixed );
        ]]>
        </code>
        <code title="Invalid: no space before typecast.">
        <![CDATA[
$a <em>=(</em>int) '420';
        ]]>
        </code>
    </code_comparison>
</documentation>