wp-includes/functions.php:1287Walks the array while sanitizing the contents.
$input_arrayarrayarrayfunction add_magic_quotes( $input_array ) { foreach ( (array) $input_array as $k => $v ) { if ( is_array( $v ) ) { $input_array[ $k ] = add_magic_quotes( $v ); } elseif ( is_string( $v ) ) { $input_array[ $k ] = addslashes( $v ); } } return $input_array;}Introduced in 0.71. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/functions.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.