How can the output of print_r() help in debugging this issue?

Issue: The issue could be related to incorrect data being passed to a function or variable. Using print_r() can help in debugging by providing a detailed output of the variable or array being examined, allowing you to see the actual data being passed and potentially identify where the issue lies. Example PHP code snippet: 

```php
$data = array(
    'name' => 'John Doe',
    'age' => 30,
    'email' => 'johndoe@example.com'
);

print_r($data);
```

By using print_r() on the $data array, you can see the values of each key and easily identify if any incorrect data is being passed, helping in debugging the issue.

Keywords

print_r debugging PHP output troubleshooting

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