php - Save $_SESSION from a list of checkbox data? -

im trying save $_session data keep checked values on page refresh, have code written missing piece.

session code:

 session_start();  if(isset($_post['submit'])) {     //user posted variable    $checks = $_post['personalization_result'];      if(isset($_post['personalization_result'])) {        $_session['value'] = $_post['personalization_result']; }     else {     $_session['value'] = '';      }  } 

form code:

 <form action="" method="post" id="question-form">        <input type="hidden" name="submit" value="1">         <li>        <input name="personalization_result[memory_0]" type="hidden"  class="<?php echo $_session['value']['memory_0'] ?>" value="0"  />        <input name="personalization_result[memory_0]" type="checkbox" value="1" id="personalization_result_memory_0" />        </li>          <li>        <input name="personalization_result[memory_1]" type="hidden"  class="<?php echo $_session['value']['memory_1'] ?>" value="0"  />        <input name="personalization_result[memory_1]" type="checkbox" value="1" id="personalization_result_memory_1" />        </li>        //there many checkboxes, 2 demo purposes       <input class="submit" type="submit" value="send" />   </form> 

for testing echoing $_session['value']['memory_0'] && $_session['value']['memory_1']inside hidden input, return properly, if input checked class 1, if it's unchecked class 0.

i not sure best way if = 1 echo checked="checked"

my shotty attempt:

<input name="personalization_result[memory_0]" type="hidden"  class="<?php echo $_session['value']['memory_0'] ?>" value="0"  /> <input name="personalization_result[memory_0]" type="checkbox" value="1" id="personalization_result_memory_0" <?php if($_session['value']['memory_0'] = 1) {echo 'checked="checked"';} ?> /> 

this returns error "cannot use scalar value array", , dont how thats written up.

so given information, whats best way write if value = 1 return checked="checked"?

this make php cleaner , scalable:

use function @ top:

session_start(); function checkbox($id) {     $ischecked = '';     if (isset($_session['value']['memory_'.$id]))     {         $ischecked =  ($_session['value']["memory_".$id] == 1) ? 'checked="checked"' : '';     }     echo '<input name="personalization_result[memory_'.$id.']" type="checkbox" ';     echo 'value="1" id="personalization_result_memory_'.$id.'" ';     echo $ischecked.' />'; } 

and instead of writing out <input ... <?php ... ?> ... /> every single checkbox, use

<?php checkbox(0); ?> <?php checkbox(1); ?>