php obtener todas las casillas de verificación marcadas ejemplo de código

Ejemplo 1: obtener un valor de casilla de verificación múltiple en php

To pass the multiple checkbox values in one POST action in PHP you can refer below code:

Html form code
<form method="post" action="send_data.php">
    <input type="checkbox" name="username[]" value="user1">User1
    <input type="checkbox" name="username[]" value="user2">User2
    <input type="checkbox" name="username[]" value="user3">User3
    <input type="checkbox" name="username[]" value="user4">User4
    <input type="submit" name="submit_data"/>
</form>
send_data.php
<?php
if(isset($_POST["submit_data"])){
   if(!empty($_POST["username"])){
       // to check the username checkboxes values you can use loop to display each checkbox value
       $usernames = $_POST["username"];
       foreach($usernames as $user){
            echo "User Name :".$user;
       }
   } 
}
?>

Ejemplo 2: cómo mostrar el valor de la casilla de verificación marcada en php

<td align="center"><h4>Portrait Packages</h4>
        <!--Please select the package(s) you wish to purchase.--></td>
        
          
          <td>
          	<input type="checkbox" name="package[]" value="bronze"> Bronze - $62.95<br>
            <input type="checkbox" name="package[]" value="silver"> Silver - $65.95<br>
          	<input type="checkbox" name="package[]" value="gold"> Gold - $67.95<br>
            <input type="checkbox" name="package[]" value="platinum"> Platinum - $69.95<br>
            <input type="checkbox" name="package[]" value="unbelievable"> Unbelievable - $83.95<br>
          	<input type="checkbox" name="package[]" value="astonishing"> Astonishing - $86.95<br>

          </td>
        </tr>
         <tr>
        <td align="center"><h4>Additional Prints with Package Purchase</h4>
 </td>
        
          
          <td>
          	<input type="checkbox" name="print[]" value="three_by_five"> Four 3x5's - $16.00<br>
            <input type="checkbox" name="print[]" value="five_by_seven"> Two 5x7's - $16.00<br>
          	<input type="checkbox" name="print[]" value="eight_by_ten"> One 8x10 - $16.00<br>
            <input type="checkbox" name="print[]" value="sixteen_wallets"> 16 Wallets - $16.00<br>
            <input type="checkbox" name="print[]" value="twentyfour_wallets"> 24 Wallets - $30.95<br>
          	<input type="checkbox" name="print[]" value="ten_by_thirteen"> One 10x13 - $21.00<br>

          </td>
        </tr>
        <tr>
        <td align="center"><h4>Additional Prints without Package Purchase</h4>
 </td>
         <td>
          	<input type="checkbox" name="print_nopack[]" value="three_by_five_nopack"> Four 3x5's - $40.95<br>

            <input type="checkbox" name="print_nopack[]" value="five_by_seven_nopack"> Two 5x7's - $44.95<br>
          	<input type="checkbox" name="print_nopack[]" value="eight_by_ten_nopack"> One 8x10 - $46.95<br>
            <input type="checkbox" name="print_nopack[]" value="sixteen_wallets_nopack"> 16 Wallets - $25.95<br>
            <input type="checkbox" name="print_nopack[]" value="twentyfour_wallets_nopack"> 24 Wallets - $30.95<br>
          	<input type="checkbox" name="print_nopack[]" value="ten_by_thirteen_nopack"> One 10x13 - $50.95<br>

          </td>
        </tr>
        <tr>
          <td align="right" valign="top"><label for="message">Special Instructions:</label>  </td>
          <td><textarea name="message" id="message" cols="50" rows="3"></textarea></td>
        </tr>

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