<?php 

if(!empty($_POST)){

    file_put_contents('configuration.php', '<?php $configuration = ' . var_export($_POST, TRUE) . "; ?>");

    file_put_contents('configuration.txt', json_encode($_POST));

    header('Location: edit.php');

} 

<?php 

$json = file_get_contents("configuration.txt");

$jsonArray = json_decode($json, TRUE);



echo '<form action="edit.php" method="post">';

echo '<table><caption>Éditer les paramètres</caption>';

echo '<tr><th>Paramètre</th><th>Valeur</th></tr>';



foreach($jsonArray as $parameter => $value){

    echo '<tr>';

    echo '<td><label for="'.$parameter.'">'.$parameter.'</label></td>';

    echo '<td><input type="text" name="'.$parameter.'" id="'.$parameter.'" value="'.$value.'" /></td>';

    echo '</tr>';

}



echo '<tr class="submit"><td colspan="2">';

echo '<input type="submit" value="Regénérer le fichier" />';

echo '</td></tr>';

echo '</table>';

echo '</form>';