PHP Multidimensional Array return error - php

Question

I have an array called $reads when I do an var_dump($reads), I get the below array result.
I am trying to get first item of first array with var_dump($reads[0][0]). I get a Message: Error rendering view: [home.uploaded] Undefined offset: 0
array(161) {
[0]=>
array(4) {
["517a5745e8505"]=>
string(29) "Ngee Ann Poly_Keywords report"
["517a5745e86fe"]=>
string(0) ""
["517a5745e882e"]=>
string(0) ""
["517a5745e89b5"]=>
string(0) ""
}
[1]=>
array(4) {
["517a5745e8505"]=>
string(7) "Keyword"
["517a5745e86fe"]=>
string(6) "Clicks"
["517a5745e882e"]=>
string(11) "Impressions"
["517a5745e89b5"]=>
string(3) "CTR"
}
[2]=>
array(4) {
["517a5745e8505"]=>
string(18) "accounting diploma"
["517a5745e86fe"]=>
string(1) "2"
["517a5745e882e"]=>
string(3) "364"
["517a5745e89b5"]=>
string(5) "0.55%"
}
[3]=>
array(4) {
["517a5745e8505"]=>
string(11) "polytechnic"
["517a5745e86fe"]=>
string(4) "1940"
["517a5745e882e"]=>
string(5) "42995"
["517a5745e89b5"]=>
string(5) "4.51%"
}
[4]=>
array(4) {
["517a5745e8505"]=>
string(15) "tourism diploma"
["517a5745e86fe"]=>
string(1) "1"
["517a5745e882e"]=>
string(3) "156"
["517a5745e89b5"]=>
string(5) "0.64%"
}

Answer 1

Try this
var_dump($reads[0]["517a5745e8505"]);
for what you want as per comments do this, put you array in a $arr variable and follow what I am doing.
$firstelementvalues = array();
$i = 0;
foreach ($arr as $key=>$val) {
$x = 0;
foreach ($val as $value) {
if ($x == 0) {
$firstelementvalues[] = $value;
$x = 1;
}
}
$i++;
}
print_r($firstelementvalues);
Output is
Array
(
[0] => Ngee Ann Poly_Keywords report
[1] => Keyword
[2] => accounting diploma
)

Answer 2

Because there is no value in array with 0 offset so please try like
var_dump($reads[161][0]);

Answer 3

I think that you need to use loop (for,foreach) if you would like to display AND use the data.
var_dump is: Arrays and objects are explored recursively with values indented to show structure.

Answer 4

It's because your array doesn't have element [0][0].
If you want to select first element in second dimension array you can use current:
$lev1 = current($yourArray);
$lev2 = current($lev1);

Answer 5

Your reads array has no numeric keys in the second dimension. You could do something like this, if you have no clue about the keys:
$read = $reads[0];
// I am getting all keys now, because I guess you also want to process the rest of that data
$readKeys = array_keys($read);
var_dump($read[ $readKeys[0] ] );