What is the significance of using eckigen Klammern in the checkbox name attribute for PHP arrays?

Using eckigen Klammern in the checkbox name attribute for PHP arrays allows you to create an array of values in the form submission. This is useful when dealing with multiple checkboxes with the same name, as it enables you to process them as an array in PHP. By naming the checkboxes with eckigen Klammern, you can easily loop through the array in PHP to access and manipulate the selected values. 

<form method="post">
  <input type="checkbox" name="checkboxes[]" value="1"> Checkbox 1
  <input type="checkbox" name="checkboxes[]" value="2"> Checkbox 2
  <input type="checkbox" name="checkboxes[]" value="3"> Checkbox 3
  <input type="submit" value="Submit">
</form>

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
  if(isset($_POST['checkboxes'])){
    foreach($_POST['checkboxes'] as $checkbox){
      echo $checkbox . "<br>";
    }
  }
}
?>

Keywords

eckigen Klammern checkbox name attribute PHP arrays significance

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