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<?php $a = [ 23 => [ 'foo' ], 42 => 'bar', ]; var_dump( filter_var( $a, FILTER_UNSAFE_RAW, FILTER_REQUIRE_ARRAY ) ); var_dump( filter_var( $a[23], FILTER_UNSAFE_RAW, FILTER_REQUIRE_ARRAY ) ); var_dump( filter_var( $a[42], FILTER_UNSAFE_RAW, null ) );
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { [23]=> array(1) { [0]=> string(3) "foo" } [42]=> string(3) "bar" } array(1) { [0]=> string(3) "foo" } Deprecated: filter_var(): Passing null to parameter #3 ($options) of type array|int is deprecated in /in/4sItX on line 9 string(3) "bar"

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