MySQL query returns no results with PDO

Question

I have an issue with PDO and MySQL. When I send that query to MySQL through phpMyAdmin, it returns 490 rows :

SELECT art.AR_Ref AS AR_Ref, art.AR_Design AS AR_Design, art.AR_PrixVen AS AR_PrixVen, art.AR_CodeBarre AS AR_CodeBarre, af.CT_Num AS CT_Num, af.AF_RefFourniss AS AF_RefFourniss, ct.CT_Intitule AS CT_Intitule, art.CL_No1, art.CL_No2, art.CL_No3, art.CL_No4, MATCH (art.indexation) AGAINST ("+:iso*") AS cpt, art.AR_Design REGEXP "^:iso*" AS commencepar, art.AR_Design REGEXP ".+:iso.*" AS contient
FROM f_article art
    LEFT JOIN f_artfourniss af ON (art.AR_Ref = af.AR_Ref AND af.AF_Principal = 1)
    LEFT JOIN f_comptet ct ON (af.CT_Num = ct.CT_Num AND ct.CT_Type = 1)
WHERE art.AR_Sommeil = '0' AND MATCH (art.indexation) AGAINST (("+:iso*") IN BOOLEAN MODE)
ORDER BY commencepar DESC, contient DESC, cpt DESC, art.AR_Ref

But with that code, there are no results at all :

<?php
$dbCon = new PDO('mysql:host=SERVER_IP; port=3306; dbname=DATABASE',
    'root',
    'PASSWORD',
    array(PDO::ATTR_PERSISTENT => true,
          PDO::ATTR_ORACLE_NULLS => PDO::NULL_EMPTY_STRING,
          PDO::ATTR_ERRMODE => PDO::ERRMODE_WARNING));

$sql = 'SELECT art.AR_Ref AS AR_Ref, art.AR_Design AS AR_Design, art.AR_PrixVen AS AR_PrixVen, art.AR_CodeBarre AS AR_CodeBarre, af.CT_Num AS CT_Num, af.AF_RefFourniss AS AF_RefFourniss, ct.CT_Intitule AS CT_Intitule, art.CL_No1, art.CL_No2, art.CL_No3, art.CL_No4, MATCH (art.indexation) AGAINST ("+:saisie1*") AS cpt, art.AR_Design REGEXP "^:saisie2*" AS commencepar, art.AR_Design REGEXP ".+:saisie3.*" AS contient FROM f_article art LEFT JOIN f_artfourniss af ON (art.AR_Ref = af.AR_Ref AND af.AF_Principal = 1) LEFT JOIN f_comptet ct ON (af.CT_Num = ct.CT_Num AND ct.CT_Type = 1) WHERE MATCH (art.indexation) AGAINST (("+:saisie4*") IN BOOLEAN MODE) ORDER BY commencepar DESC, contient DESC, cpt DESC, art.AR_Ref';
$stmt = $dbCon->prepare($sql);
$saisie = 'iso';
$stmt->bindParam(':saisie1', $saisie, PDO::PARAM_STR);
$stmt->bindParam(':saisie2', $saisie, PDO::PARAM_STR);
$stmt->bindParam(':saisie3', $saisie, PDO::PARAM_STR);
$stmt->bindParam(':saisie4', $saisie, PDO::PARAM_STR);
$stmt->execute();
if (($stmt->errorCode() != '00000')){
    var_dump($stmt->errorInfo());
} else {
    while($row = $stmt->fetch(PDO::FETCH_OBJ)) {
        var_dump($row);
    }
    $stmt->closeCursor();
}
$dbCon = null;
?> 

What could be the problem?

Answer 1

Thanks to Jay Blanchard,

It is about how you're formatting your variables in the SQL statement. You should do the formatting in the bindParam() for each variable where the placeholder replaces the whole variable and any conditions surrounding it.

I found the solution :

<?php
$dbCon = new PDO('mysql:host=SERVER_IP; port=3306; dbname=DATABASE',
    'root',
    'PASSWORD',
    array(PDO::ATTR_PERSISTENT => true,
          PDO::ATTR_ORACLE_NULLS => PDO::NULL_EMPTY_STRING,
          PDO::ATTR_ERRMODE => PDO::ERRMODE_WARNING));

$sql = 'SELECT art.AR_Ref AS AR_Ref, '
            . 'art.AR_Design AS AR_Design, '
            . 'art.AR_PrixVen AS AR_PrixVen, '
            . 'art.AR_CodeBarre AS AR_CodeBarre, '
            . 'af.CT_Num AS CT_Num, '
            . 'af.AF_RefFourniss AS AF_RefFourniss, '
            . 'ct.CT_Intitule AS CT_Intitule, '
            . 'art.CL_No1, '
            . 'art.CL_No2, '
            . 'art.CL_No3, '
            . 'art.CL_No4, '
            . 'MATCH (art.indexation) AGAINST (:saisie1) AS cpt, '
            . 'art.AR_Design REGEXP :saisie2 AS commencepar, '
            . 'art.AR_Design REGEXP :saisie3 AS contient '
     . 'FROM f_article art '
            . 'LEFT JOIN f_artfourniss af ON (art.AR_Ref = af.AR_Ref AND af.AF_Principal = 1) '
            . 'LEFT JOIN f_comptet ct ON (af.CT_Num = ct.CT_Num AND ct.CT_Type = 1) '
     . 'WHERE MATCH (art.indexation) AGAINST ((:saisie4) IN BOOLEAN MODE) '
     . 'ORDER BY commencepar DESC, '
            . 'contient DESC, '
            . 'cpt DESC, '
            . 'art.AR_Ref';
$stmt = $dbCon->prepare($sql);
$saisie = 'iso';
$saisie1 = '+' . $saisie . '*';
$saisie2 = '^' . $saisie . '*';
$saisie3 = '.+' . $saisie . '.*';
$saisie4 = '+' . $saisie . '*';
$stmt->bindParam(':saisie1', $saisie1, PDO::PARAM_STR);
$stmt->bindParam(':saisie2', $saisie2, PDO::PARAM_STR);
$stmt->bindParam(':saisie3', $saisie3, PDO::PARAM_STR);
$stmt->bindParam(':saisie4', $saisie4, PDO::PARAM_STR);
$stmt->execute();
if (($stmt->errorCode() != '00000')){
    var_dump($stmt->errorInfo());
} else {
    while($row = $stmt->fetch(PDO::FETCH_OBJ)) {
        var_dump($row);
    }
    $stmt->closeCursor();
}
$dbCon = null;
?>