How can the code for linking PHP files be properly implemented?

When linking PHP files, you can use the include or require functions to include the contents of one PHP file into another. The include function will only generate a warning if the file is not found, while require will produce a fatal error. It's important to use the correct file path when including files to ensure they are properly linked. 

// Example of linking PHP files using include
include 'path/to/file.php';
```

```php
// Example of linking PHP files using require
require 'path/to/file.php';

Keywords

include require include_once require_once file linking

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