Single to multiple Array in PHP [closed] - php

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In my foreach loop, I'm fetching data from csv file, after rendering it in the array, the data is rendered collectively, but I want it to show column wise as in csv file or I have shown in the below second code example:
Array(
[0] => op1
[1] => op2
[2] => ans 1
[3] => op4
[4] => op1
[5] => op2
[6] => ans 2
[7] => op4
[8] => op1
[9] => op2
[10] => ans 3
[11] => op4
[12] => op1
[13] => op2
[14] => ans 4
[15] => op4
[16] => op1
[17] => op2
[18] => ans 5
[19] => op4
[20] => op1
)
I want to this
Array
(
option[0]=>
Array(
[0] => op1
[1] => op2
[2] => ans 1
[3] => op4
)
option[1]=>
Array(
[0] => op1
[1] => op2
[2] => ans 2
[3] => op4
)
option[2]=>
Array(
[0] => op1
[1] => op2
[2] => ans 2
[3] => op4
)
option[3]=>
Array(
[0] => op1
[1] => op2
[2] => ans 2
[3] => op4
)
)

Answer 1

you can use array_chuck() function like this:
print_r(array_chunk($input_array, 4));

Answer 2

In your existing foreach loop use Modulus for divide array in groups.
$final_arr= array();
$new_key = 0;
foreach($csv_data as $key => $value){
$new_key = $new_key;
if($key % 4 == 0){
$new_key += 1;
}
$final_arr[$new_key][]= $value;
}
Here I assume you got your csv data in $csv_data this variable.
Hope it helps to you.

Answer 3

From str_getcsv's manual page, first two comments:
That does not produce the desired results, if fields contain
linebreaks.
Handy one liner to parse a CSV file into an array:
$csv = array_map('str_getcsv', file('data.csv'));
This will create an array of associative arrays with the first row
column headers as the keys.
$csv = array_map('str_getcsv', file($file));
array_walk($csv, function(&$a) use ($csv) {
$a = array_combine($csv[0], $a);
});
array_shift($csv); // remove column header