<?php
require_once('connexion.php');
$connexion=connect_bd();
$sql="SELECT * from CARNET";
$data=$connexion->query($sql);
$contacts=array();
while($pers=$data->fetch()){
    $contacts[]=array(
    'nom'=>$pers['NOM'],
    'prenom'=>$pers['PRENOM'], 
    'naissance'=>$pers['NAISSANCE']);
  }
$json=json_encode($contacts, JSON_PRETTY_PRINT);
print($json);