What are the consequences of using the same variable name for multiple input fields in PHP forms?

Using the same variable name for multiple input fields in PHP forms can lead to data being overwritten or mixed up, resulting in errors or incorrect processing of the form data. To solve this issue, you can append square brackets [] to the variable name in the form fields to create an array of values for that variable. 

<form method="post" action="process_form.php">
  <input type="text" name="input_field[]" />
  <input type="text" name="input_field[]" />
  <input type="text" name="input_field[]" />
  <input type="submit" value="Submit" />
</form>
```

In the PHP processing script (process_form.php):

```php
<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
  $input_values = $_POST['input_field'];
  
  foreach ($input_values as $value) {
    // Process each input value here
    echo $value . "<br>";
  }
}
?>

Keywords

variable name input fields PHP forms consequences conflicts

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