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0
jaman
answered Apr 26 '23 00:00
You can flatten a multi-dimensional array into a single-dimensional array in PHP using recursion. Here's an example function that flattens a multi-dimensional array:
function flatten_array($array) {
$result = array();
foreach ($array as $value) {
if (is_array($value)) {
$result = array_merge($result, flatten_array($value));
} else {
$result[] = $value;
}
}
return $result;
}
This function checks each value in the array to see if it's an array itself. If it is, it calls itself recursively on that sub-array. If it's not an array, it simply adds the value to the result array.
You can use this function like this:
php
Copy code
$multi_dim_array = array(array(1,2,3), array(4,5,6), array(7,8,9));
$single_dim_array = flatten_array($multi_dim_array);
print_r($single_dim_array);
This will output:
A
rray
(
[0] => 1
[1] => 2
[2] => 3
[3] => 4
[4] => 5
[5] => 6
[6] => 7
[7] => 8
[8] => 9
)
Note that this function will flatten any multi-dimensional array, regardless of its depth or structure.
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