<?php

namespace TaskChecker\Module;

class Util extends BaseModule

{

/**

* Input: "

* a,b,c

* 0,1,2

* 4,5,6

* "

*

* Output: [

* ['a' => 0, 'b' => 1, 'c' => 2],

* ['a' => 4, 'b' => 5, 'c' => 6]

* ]

*/

public function fromCsv($csvString)

{

$lines = explode("\n", $csvString);

$lines = array_map("trim", $lines);

$lines = array_filter($lines, function ($line) { return $line !== ''; });

if (count($lines) < 2) {

throw new \InvalidArgumentException(

"Input data must contain at least 2 lines");

}

$data = array_map('str_getcsv', $lines);

foreach ($data as $key => $row) {

$data[$key] = array_map('trim', $row);

}

$headers = array_shift($data);

$result = [];

foreach ($data as $i => $row) {

if (count($row) != count($headers)) {

throw new \InvalidArgumentException(sprintf(

"Invalid value count at row %d, %d headers and %d cells",

$i + 1,

count($headers),

count($row)

));

}

foreach ($row as $key => $value) {

if (is_numeric($value)) {

$row[$key] = floatval($value);

}

}

$result[] = array_combine($headers, $row);

}

return $result;

}

}