php error accessing double layer array - php

Question

My data is in a second tier of a return value that I am trying to access the individual elements. Array ( [success] => 1 [return] => Array ( [0] => Array
I tried ['return'] since it is the key of that, is what I need but got the same error or obvious worse.
error:
Array to string conversion in orders.php on line 10
code:
<?php
$id = $argv[1]; //variable for inbound
require_once('phpPlay.php');
$result = api_query("mytrades", array("marketid" => $id));
foreach( $result as $x) {
echo $x;
}
?>
data top 5 rows:
Array
(
[success] => 1
[return] => Array
(
[0] => Array
(
[tradeid] => 74038377
[tradetype] => Sell
[datetime] => 2014-11-12 16:05:32
[tradeprice] => 0.00675000
[quantity] => 22.18670000
[fee] => -0.00007488
[total] => 0.14976023
[initiate_ordertype] => Buy
[order_id] => 197009493
)
[1] => Array
(
[tradeid] => 73687280
[tradetype] => Buy
[datetime] => 2014-11-09 03:38:13
[tradeprice] => 0.00816988
[quantity] => 0.00100000
[fee] => 0.00000002
[total] => 0.00000817
[initiate_ordertype] => Buy
[order_id] => 194824864
)
[2] => Array
(
[tradeid] => 73684313
[tradetype] => Sell
[datetime] => 2014-11-09 02:57:41
[tradeprice] => 0.00808034
[quantity] => 0.00100000
[fee] => 0.00000000
[total] => 0.00000808
[initiate_ordertype] => Buy
[order_id] => 194803992
)
[3] => Array
(
[tradeid] => 73653019
[tradetype] => Sell
[datetime] => 2014-11-08 17:53:12
[tradeprice] => 0.00793991
[quantity] => 0.00010000
[fee] => 0.00000000
[total] => 0.00000079
[initiate_ordertype] => Buy
[order_id] => 194559503
)
[4] => Array
(
[tradeid] => 73652717
[tradetype] => Sell
[datetime] => 2014-11-08 17:50:13
[tradeprice] => 0.00793989
[quantity] => 0.00100000
[fee] => 0.00000002
[total] => 0.00000794
[initiate_ordertype] => Sell
[order_id] => 194559596
)
...

Answer 1

The problem is that with the echo $x statement in your code above, $x is an array, not a string.
The echo function requires a string, so the error you're getting is because PHP is automatically trying to convert the parameter passed to echo to a string, but it is failing because you are passing an array.
Try this:
if (isset($result['return'])) {
foreach($result['return'] as $result_item) {
echo(var_export($result_item, true));
}
} else {
echo 'No results';
}