What potential issues can arise when multiple input elements have the same name in PHP?

When multiple input elements have the same name in PHP, it can cause issues when trying to access the values of these inputs using $_POST or $_GET superglobals. To solve this issue, you can use array notation in the input element names to differentiate them. This way, you can access the values as an array in PHP. 

<form method="post">
    <input type="text" name="input[]" />
    <input type="text" name="input[]" />
    <input type="text" name="input[]" />
    <input type="submit" />
</form>

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $inputs = $_POST['input'];
    foreach ($inputs as $input) {
        echo $input . "<br>";
    }
}
?>

Keywords

PHP form processing $_POST $_GET array indexing

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