问将foreach内部的数组传递到foreach之外的变量中？

EN

 //My form data
 $checks = $_POST['personalization_result'];

 //Pass the foreach array into this variable and use this to mail
 $checkString = '';

    //For each checkbox data
    foreach ($checks as $k => $v) {
     var_dump ($v);
    }

 //Email the data
 $sent = wp_mail($to, $subject, $checkString, $headers); //I have set up the other variables but its not necessary to add here just focused on $checkString

<form action="<?php the_permalink(); ?>" method="post"> 

<?php echo $checkString; ?>// Trying to see what the array is doing

<input type="hidden" name="submitted" value="1">

<p><input type="submit"></p>

<li class="option table selected">
    <input type="hidden" value="0" name="personalization_result[memory_0]">
    <input type="checkbox" value="1" name="personalization_result[memory_0]" id="personalization_result_memory_0" checked="checked">                                        
</li> 


<li class="option table selected">
    <input type="hidden" value="0" name="personalization_result[memory_1]">
    <input type="checkbox" value="1" name="personalization_result[memory_1]" id="personalization_result_memory_1" checked="checked">                                    
</li>