Generate multiple Form Inputs php - php

Question

How do i get the values when submitted
I am generating the input via a loop based on the users selection but don't know how to retrieve the input values via post method
here is a sample of what i have
// string is based on database values it can be anything which i can't tell
Example code
$string = 'math,english,biology';
$exp = explode(',', $string);
foreach($exp as $value){
print '<input type="text" name="'.$value.'[]" value="" />
}

Answer 1

You don't have to use name array (name="blabla[]")
$string = 'math,english,biology';
$exp = explode(',', $string);
if ($_POST) {
foreach ($exp as $name) {
if (isset($_POST[$name])) {
echo 'input ' . $name . ' is ' . $_POST[$name] . '<br>';
}
}
exit();
}
echo '<form method="post">';
foreach($exp as $value){
print '<input type="text" name="'.$value.'" value="" />';
}
echo '<button type="submit">Submit</button></form>';
Enter a, b, c to each input and submit. Here is the result:
input math is a
input english is b
input biology is c

Answer 2

Put the value in value="", name the field and make it an array [].
$string = 'math,english,biology';
$exp = explode(',', $string);
foreach ($exp as $value) {
echo '<input type="text" name="fieldName[]" value="<?= htmlentities($value) ?>" />
}
Then it will be accessible in *$_POST['fieldName'] as an array.
*presuming you are using method="POST" on the form
If math,english,biology are form keys, then do:
$string = 'math,english,biology';
$exp = explode(',', $string);
foreach ($exp as $key) {
echo '<input type="text" name="fieldName[<?= htmlentities($key) ?>]" value=""/>
}
or
$string = 'math,english,biology';
$exp = explode(',', $string);
foreach ($exp as $key) {
echo '<input type="text" name="<?= htmlentities($key) ?>" value=""/>
}