访问数组中数组索引的值

Question

I have an array of arrays called $excelData. print_r($excelData) returns the following:

Array ( 
[0] => Array ( 
              [0] => Array ( 
                              [0] => name 
                              [1] => test 
                              [2] => 4 
                              [3] => [e-mail] 
                              [4] => it4249 
                              [5] => sha256:1000: 
                             ) 
              ) 
[1] => Array ( 
              [0] => Array ( 
                              [0] => fseconf 
                              [1] => test2 
                              [2] => 3 
                              [3] => [e-mail] 
                              [4] => ft9655 
                              [5] => sha256:1000: 
                                         ) 
               ) 
)

and I'm trying to print the 4th index in each case (i.e. it4249 and ft955) with the following code:

$query = "INSERT INTO tblTest (username, fname, surname, year, email) VALUES";
$qPart = array_fill(0, count($excelData), "(?, ?, ?, ?, ?)");
$query .=  implode(",",$qPart);
$sth = $dbh->prepare($query);
$i = 1;

print_r($excelData);
echo "<br />";
echo "<br />";

Foreach($excelData As $Row){

          echo "Username: ".$Row[0][4];
          echo "<br />";
          echo "<br />";
          $sth->bindValue($i++, $Row[0][4]);
          $sth->bindValue($i++, $Row[0][0]);
          $sth->bindValue($i++, $Row[0][1]);
          $sth->bindValue($i++, $Row[0][2]);
          $sth->bindValue($i++, $Row[0][3]); 
 }

But it simply prints it4249 both times. Why does this not work and how do I get this right?

EDIT:

Changing my loop to pass by reference as below solves my problem but I have no idea why - any explanations?

Foreach($excelData As &$Row){
}

Answer 1

Nest down 3 times.

foreach ($other as $arr)
{
    foreach($arr as $arr1)
    {
        foreach($arr1 as $k=>$v)
        {
        if($k==4)
        {
            echo $v.'<br/>';
            break; // as suggested by u_mulder
        }
        }
    }
}

OUTPUT :

it4249
ft9655

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