<?php
    //Exercice 1
    $Tprod = array("Abricot","Cerise","Fraise","Peche");
    $Tvente = array(
        "User1" => array("Abricot" => 20, "Cerise" => 10, "Fraise" => 10),
        "User2" => array("Cerise" => 10, "Abricot" => 20, "Peche" => 30),
        "User3" => array("Cerice" => 5, "Abricot" => 10));

    //(1)
    function constr($Tprod, $Tvente) {
        foreach ($Tvente as $key => $value) {
            $somme = 0;
            foreach($value as $prod => $val)
                $somme += $val;
            $TSAc[$key] = $somme;
        }
        return $TSAc;
    }
    $TSAc = constr($Tprod, $Tvente);
    //(2)
    function calcQteProd($Tvente, $nom) {
        $qte = 0;
        foreach ($Tvente as $key => $value) {
            foreach($value as $prod => $val) {
                if($prod == $nom)
                    $qte += $val;
            }
        }
        return $qte;
    }
    //(3)
    $totale = 0;
    foreach ($Tprod as $value)
        $totale += calcQteProd($Tvente, $value);
    foreach ($Tprod as $value) {
        $TPourcent[$value] = (calcQteProd($Tvente, $value) / $totale) * 100;
    }
?>