xdiff_file_merge3

Merge 3 files into one

&reftitle.description; `mixed` `xdiff_file_merge3` `string` `old_file` `string` `new_file1` `string` `new_file2` `string` `dest`

Merges three files into one and stores the result in a file `dest`. The `old_file` is an original version while `new_file1` and `new_file2` are modified versions of an original.

&reftitle.parameters;

`old_file`

- Path to the first file. It acts as "old" file.

`new_file1`

- Path to the second file. It acts as modified version of `old_file`.

`new_file2`

- Path to the third file. It acts as modified version of `old_file`.

`dest`

- Path of the resulting file, containing merged changed from both `new_file1` and `new_file2`.

&reftitle.returnvalues;

Returns &true; if merge was successful, string with rejected chunks if it was not or &false; if an internal error happened.

&reftitle.examples;

### `xdiff_file_merge3` example

The following code merges three files into one.

    <?php
    $old_version = 'original_script.php';
    $fix1 = 'script_with_fix1.php';
    $fix2 = 'script_with_fix2.php';

    $errors = xdiff_file_merge3($old_version, $fix1, $fix2, 'fixed_script.php');
    if (is_string($errors)) {
        echo "Rejects:\n";
        echo $errors;
    }
    ?>

&reftitle.seealso;

- `xdiff_string_merge3`