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SELECT PHP mysqli query won't execute

$dc=fopen("numeu.txt","rb");
$row1=fgets($dc,120);   
$row2=fgets($dc,120);
$row3=fgets($dc,120);

fclose($dc);

$servername="localhost";
$username="root";
$password='';
$database="Stildev";

$conn = new mysqli($servername, $username, $password, $database);

$sql="SELECT poza1,poza2,poza3,poza4,poza5,poza6 FROM postari WHERE utilizator='".$row2."' AND subiect='".$row1."' AND id2='".$row3."'";


$resultat=$conn->query($sql);

echo $resultat->num_rows;

This piece of code returns 0 lines

There are no errors and the sql query works fine in the MySQL console.

Also I found that when discussing the WHERE clause the code works. How do you explain this?

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1 answer


Has the password been fixed?

Try adding

if ($mysqli->connect_error) {
    die('Connect Error (' . $mysqli->connect_errno . ') '
        . $mysqli->connect_error);
}


Also, according to https://php.net/manual/ro/mysqli.query.php this might help:

if ($result = $mysqli->query($sql)) {
    echo $result->num_rows;
    /* close result set */
    $result->close();
}

If you are using multiple return queries, close the previous results with ->close();

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