How can the use of array notation in HTML help in processing multiple selections in PHP forms?

When processing multiple selections in PHP forms, using array notation in HTML allows you to group related form elements together, making it easier to handle them in PHP. This notation ensures that all selected values are passed as an array to the PHP script, which can then be easily looped through or processed using array functions. 

<form method="post" action="process_form.php">
  <input type="checkbox" name="colors[]" value="red"> Red
  <input type="checkbox" name="colors[]" value="blue"> Blue
  <input type="checkbox" name="colors[]" value="green"> Green
  <input type="submit" value="Submit">
</form>
```

In the PHP script (process_form.php), you can access the selected colors as an array:

```php
<?php
if(isset($_POST['colors'])) {
  $selectedColors = $_POST['colors'];
  
  foreach($selectedColors as $color) {
    echo $color . "<br>";
  }
}
?>

Keywords

array notation HTML multiple selections PHP forms processing

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