I have an array but the structure isnt good so I wanted it to change.
The array is an array with arrays in it, but 1 is always empty so I dont need this one, and therefor there's no need for a multilevel array.
Current array
array(
[0] => array(
[0] => some value
[1] => some value
),
[1] => array( empty so this one must be removed )
)
The way that I want it to be
array(
[0] => some value
[1] => some value
)
You can use like below.
array_reduce($array, 'array_merge', array());
For Example:
$a = array(array(1, 2, 3), array(4, 5, 6));
$result = array_reduce($a, 'array_merge', array());
Result:
array[1, 2, 3, 4, 5, 6];
You can use array_merge inside a loop. Something like -
$array = [
[1, 2],
[],
[4]
];
$temp = [];
foreach($array as $a) {
$temp = array_merge($temp, $a);
}
print_r($temp);
Output
Array
(
[0] => 1
[1] => 2
[2] => 4
)
This is a fairly cheap code wise way of flattening
$array = [[1, 2], []];
$flat = array_merge(...$array);
The problem is if the first level of the array isn't all arrays, it falls over
Just loop over the array and add the non empty arrays elments, as explained below, (without using inbuilt function)
<?php
$array = [[1, 2], [], [4]];
$temp = [];
foreach($array as $a) {
if(!empty($a)) {
foreach($a as $b)
$temp[] = $b;
}
}
echo "<pre>";
print_r($temp);
/* result
Array
(
[0] => 1
[1] => 2
[2] => 4
)
*/
?>
$in = [[1, 2], [], [4]]; foreach($in as $a) foreach($a as $b) $out[] = $b;
[""] or [null]