php merge arrays

Question

I have been trying (unsuccessfully) to merge the output of multiple arrays into a single array. An example of what I tried was:

$data1 = array(\"cat\", \"goat\")         


        

Answer 1

using array_merge_recursive ::

$arr1 = array("Item One");
$arr2 = array("Item Two");
print_r(array_merge_recursive($arr1, $arr2));

outputs

Array ( [0] => Item One [1] => Item Two ) 

Answer 2

modify your last foreach loop to look like this:

$output=array();
foreach($lines as $inner){
    $output[]=$inner[1];
}
header('Content-type: text/plain; charset=utf-8');
print_r($output);

Answer 3

You could add the items to a new array sequentially to achieve your desired result:

:
$aResult = array();
foreach ($lines as $inner) {
    $item = array($inner[1]);
    $aResult[] = $item;
}
var_dump($aResult);

Answer 4

There may be a better way, but this should work. Just loop through and merge each array individually:

$items = array();

foreach ($lines as $inner){
    $item = array($inner[1]);

    $items = array_merge($items, $item);
}

echo "<pre>";
print_r($items);
echo "</pre>";

Answer 5

foreach ($lines as $inner) {
    $items[] =  $inner;
}

this ll work fine

Answer 6

Your example that works is completely different from your non working code. You are not even using array_merge in it.

If you are only accessing scalar elements, the following will work, but does not use array_merge either:

$items = array();
foreach ($lines as $inner) {
    $items[] = $inner[1];
}    
$items = array_unique($items);

echo "<pre>";
print_r($items);
echo "</pre>";

If you are interested in all of $inner, than you would use array_merge:

$items = array();
foreach ($lines as $inner) {
    $items = array_merge($items, $inner);
}