Is there anyway to add condition in function of parameters? - php

Question

I have a grid where I need to have some filters in.
Actually I have only 2 parameters available but the thing is that I will have maybe 5/6/7 or even more and I need a good way to manage it in my json encoding.
I manage it by this way :
if(!empty($_GET['q']) && empty($_GET['s'])) {
$client = $_GET['q'];
$requeteDevis = myPDO::getInstance()->prepare(<<<SQL
SELECT SC_libelle, ETP_libelle, DVS_numDevis, DVS_libelle, DVS_montant, DVS_statut, DVS_pourcent, DVS_montant,
USR_Nom, USR_Prenom, CTC_Nom, CTC_Prenom, ctc.idContact, DVS_date
FROM Utilisateur usr, Devis dvs, SiteClient sc, Client clt, Contact ctc, Entreprise etp
WHERE usr.idEntreprise = etp.idEntreprise
AND usr.idUtilisateur = dvs.idUtilisateur
AND dvs.idSiteClient = sc.idSiteClient
AND sc.idClient = clt.idClient
AND dvs.idContact = ctc.idContact
AND clt.CLT_libelle = ?
SQL
);
$requeteDevis->execute(array($client));
} else if (!empty($_GET['s']) && empty($_GET['q'])) {
$stat = $_GET['s'];
$requeteDevis = myPDO::getInstance()->prepare(<<<SQL
SELECT SC_libelle, ETP_libelle, DVS_numDevis, DVS_libelle, DVS_montant, DVS_statut, DVS_pourcent, DVS_montant,
USR_Nom, USR_Prenom, CTC_Nom, CTC_Prenom, ctc.idContact, DVS_date
FROM Utilisateur usr, Devis dvs, SiteClient sc, Client clt, Contact ctc, Entreprise etp
WHERE usr.idEntreprise = etp.idEntreprise
AND usr.idUtilisateur = dvs.idUtilisateur
AND dvs.idSiteClient = sc.idSiteClient
AND sc.idClient = clt.idClient
AND dvs.idContact = ctc.idContact
AND dvs.DVS_statut = ?
SQL
);
$requeteDevis->execute(array($stat));
}
else if ......
So, do you think there is any way to have only one sql statement ? Else it will finish I will have 50 ones :/
Thanks

Answer 1

$cond1 = '';
$cond2 = '';
$cond3 = '';
$var = 2;
if(1==2){
$cond1 = ' AND column1>20';
}
if(3==3){
$cond2 = ' AND column2 < '.$var;
}
$cond3 = ' ORDER BY id DESC';
$baseSQL = "SELECT * FROM table WHERE 1=1 $cond1 $cond2 $cont3";

Answer 2

I have find how to manage it :
Here is the code :
if(empty($_GET['s'])) {
$state = null;
} else $state = $_GET['s'];
if(empty($_GET['q'])) {
$client = null;
} else $client = $_GET['q'];
$requeteDevis = myPDO::getInstance()->prepare(<<<SQL
SELECT SC_libelle, ETP_libelle, DVS_numDevis, DVS_libelle, DVS_montant, DVS_statut, DVS_pourcent, DVS_montant,
USR_Nom, USR_Prenom, CTC_Nom, CTC_Prenom, ctc.idContact, DVS_date
FROM Utilisateur usr, Devis dvs, SiteClient sc, Client clt, Contact ctc, Entreprise etp
WHERE usr.idEntreprise = etp.idEntreprise
AND usr.idUtilisateur = dvs.idUtilisateur
AND dvs.idSiteClient = sc.idSiteClient
AND sc.idClient = clt.idClient
AND dvs.idContact = ctc.idContact
AND (dvs.DVS_statut = :statut OR :statut is null)
AND (clt.CLT_libelle = :client OR :client is null)
SQL
);
$requeteDevis->execute(array(":statut" => $state,
":client" => $client));
So with only one request, you are able to manage every filters. thanks for help tho