How to adress the right html input field with php - php

Question

I would like to delete an user from a file. I generate the html form with the php code. Now, it reads the user from a file ann puts it in a email input field. When I click the delete button after the user I choose, it should delete him out of the file. But I don't know how to do it that it takes the right user, because I generate it with a for.
From where does the php choose if the button is clicked?
By the way the $liste is an Array with all the users in it.
echo '<form id=\"myform\" name=\"myform\">';
for ($j = 0; $j < count($liste); $j++) {
echo '<input id=\"email\" type=\"email\" name=\"email\" required=\"required\" value=' . $liste[$j][0] . '>';
echo '<select name="permission">
<option value="admin">admin</option>
<option value="user">user</option>
</select>';
echo '<input type=\'submit\' name=\'submit\'>';
echo '<input type=\'submit\' name=\'delete\' value=\'delete\'>';
echo '</form>';
if(isset($_GET['submit'])){
echo "Option doesn't work yet";
}}
if(isset($_GET['delete'])){
for ($i = 0; $i < count($liste); $i++){
if ($liste[$i][0] == $liste[j][0]){
echo $liste[$i][0].'deleted';
}
}
}

Answer 1

Ok for the beggining you having some syntax to fix in your form tag (missing method to get and action to some page)
for ($j = 0; $j < count($liste); $j++) {
echo "<form id=\"myform\" name=\"myform\" action=\"\" method=\"GET\">";
echo '<input id=\"email\" type=\"email\" name=\"email\" required=\"required\" value=' . $liste[$j][0] . '>';
echo '<select name="permission">
<option value="admin">admin</option>
<option value="user">user</option>
</select>';
echo '<input type=\'submit\' name=\'submit\'>';
echo '<input type=\'submit\' name=\'delete\' value=\'delete\'>';
echo '</form>';
}
if(isset($_GET['submit'])){
echo "Option doesn't work yet";
}
if(isset($_GET['delete'])){
for ($i = 0; $i < count($liste); $i++){
if ($liste[$i][0] == $liste[j][0]){
echo $liste[$i][0].'deleted';
}
}
}