eligibilite/ajax/datastores.php

<?php
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ERROR | E_WARNING | E_PARSE | E_NOTICE);

function connect(){

  $link = mysql_connect('127.0.0.1','eligibilite','B3Kg7z6d') or die(mysql_error());
  mysql_select_db('eligibilite', $link) or die(mysql_error());
}

function executeQuery($requete) {
  $resultat = mysql_query($requete) or die(mysql_error());

  if(substr($requete, 0, 6) === 'SELECT'){
    while($donnees=mysql_fetch_array($resultat)){
      $resultats[]=$donnees;
    }
    if (!isset($resultats)) {
      return null;
    }
  }
  else if(substr($requete, 0, 6) === 'INSERT'){
    $resultats = mysql_insert_id();
  }
  else {
    $resultats = 'ok';
  }

  return $resultats;
}

connect();

if(isset($_POST['query'])) {
  $resultat = executeQuery($_POST['query']);
}

if(isset($_POST['mail'])) {
  $email = 'ftth@manchenumerique.fr';
  $bcc   = 'francoisbeaufils@zeno-labs.com';

  $headers  = 'MIME-Version: 1.0' . "\r\n";
  $headers .= 'Content-type: text/html; charset=UTF-8' . "\r\n";
  $headers .= 'Bcc: '.$bcc."\r\n";

  if(isset($_POST['siteEmail'])) {
    $email = $_POST['siteEmail'];
  }

  // En-têtes additionnels
  $headers .= mb_encode_mimeheader('From: Manche Numérique <'.$email.'>' . "\r\n", "UTF-8");

  $subject = utf8_decode($$_POST['mail']['sujet']);
  $subject = mb_encode_mimeheader($subject

  // Envoi
  $to = $_POST['mail']['to'];
  $resultat = mail($to, $subject, $_POST['mail']['message'], $headers);
}

if(isset($resultat)){
  echo json_encode($resultat);
}
?>