Question

I want to fill MySQL table with 2-dim array data:

    for($i=0; $i<sizeof($arr); $i++)
    {
    $query1="INSERT INTO `fsTest` (`id`,`xxx`,`yyy`,`zzz`)  
        VALUES('$arr[$i][0]','$arr[$i][1]','$arr[$i][2]','$arr[$i][3]');";
    $result1=DatabaseConnector::ExecuteQuery($query1);
    }

When I check the table ‘fsTest’ I can see just 1 line with the following entries [0] [1] [2] [3].
How to solve this issue?

UPDATE: Another thing is that I use $arr[$i][] = $val; to populate the array. var_dump($arr) returns Arrayint(0).

Answer 1

You need curly braces around your variable names:

$query1 = "
    INSERT INTO `fsTest` (`id`,`xxx`,`yyy`,`zzz`)  
        VALUES('{$arr[$i][0]}','{$arr[$i][1]}','{$arr[$i][2]}','{$arr[$i][3]}');
";

Otherwise, the parser is lazy and will find $arr[$i] first and attempt to insert that value as a string, instead of $arr[$i][0].

A quick example demonstrates this behavior:

$array = array( array( 'value'));
echo "$array[0][0]"; // Fails, Array to string conversion
echo "{$array[0][0]}"; // Prints value