checkbox - Checkboxes not posting in PHP -


so trying value 3 checkboxes later sent database, reason not posting in php when im testing.

<table width="200" border="0">  <tr>   <td><img src="images/image1.jpg" ></td>   <td><img src="images/image2.jpg" ></td>   <td><img src="images/image3.jpg" ></td>  </tr>  <tr>   <td><input type="checkbox" id="checkbox65" class="css-checkbox med"     name="avatar" value="image1"/>    <label for="checkbox65" class="css-label med elegant" /></label></td>   <td><input type="checkbox" id="checkbox66" class="css-checkbox med" name="avatar" value="image2"/>    <label for="checkbox66" class="css-label med elegant" /></label></td>   <td><input type="checkbox" id="checkbox67" class="css-checkbox med" name="avatar" value="image3"/>    <label for="checkbox67" class="css-label med elegant"  ></label></td>   </tr>  </table><br>

and posting in page:

<?php  if(isset($_post['submit'])){$avatar=$_post['avatar'];}  echo $avatar; ?>

but getting 

 undefined index: avatar on line 14

i have form tags, correct, that's how it's different question, else on page posts correctly, except 1 thing

i think have put <form> tag around inputs. , in tag should specify (as action) php file that'll reviece data ;)

take @ : http://www.html-form-guide.com/php-form/php-form-checkbox.html

edit:

as per your original post, need treat checkboxes array.

sidenote: should edit underneath original question , marked edit, in order not overwrite original.

i.e.: name="avatar[]" adding brackets around each element bearing same name attribute. need use foreach loop, while using conditional statement , placing post array , variable inside loop.

<form action="reg_test.php" method="post">                                 username:<br>                                 <input type="text" name="username"><br>                                  password:                                 <input type="password" name="password" ><br>                                  e-mail:                                 <input type="text" name="email" ><br>                                  avatar:     <table width="200" border="0">   <tr>     <td><img src="images/avatars/image1.jpg" ></td>     <td><img src="images/avatars/image2.jpg" ></td>     <td><img src="images/avatars/image3.jpg" ></td>   </tr>  <tr> <td><input type="checkbox" id="checkbox65" class="css-checkbox med" name="avatar[]" value="image1"/>     <label for="checkbox65" class="css-label med elegant" /></label></td> <td><input type="checkbox" id="checkbox66" class="css-checkbox med" name="avatar[]" value="image2"/>     <label for="checkbox66" class="css-label med elegant" /></label></td> <td><input type="checkbox" id="checkbox67" class="css-checkbox med" name="avatar[]" value="image3"/>     <label for="checkbox67" class="css-label med elegant"  ></label></td> </tr> </table><br> <input type="submit" value="register" name="submit"> </form>  <?php  error_reporting(e_all); ini_set('display_errors', 1);  if(isset($_post['submit'])){     $username=$_post['username'];     $password=$_post['password'];     $email=$_post['email'];  if(isset($_post['avatar'])){      $avatar=$_post['avatar'];     foreach ($avatar $avatars=>$value) {              echo "avatars : ".$value."<br />";         }  echo $username.",".$password.",".$email."</br>";      }  } // brace if(isset($_post['submit']))  ?>

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