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<?php $keys = [ 'my', 'name', 'is', 'Rafael' ]; $value = 'value'; $result = array_reduce( array_reverse( $keys ), function ( $c, $i ) use ( $value ) { return [ $i => ( is_null( $c ) ? $value : $c ) ]; } ); print_r( $result ); // или $result = array_reduce( array_reverse( $keys ), fn( $c, $i ) => [ $i => $c ?? $value ] ); print_r( $result );
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [my] => Array ( [name] => Array ( [is] => Array ( [Rafael] => value ) ) ) ) Array ( [my] => Array ( [name] => Array ( [is] => Array ( [Rafael] => value ) ) ) )

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