php convert csv string to array

convert_csv_string_to_array.php

<?php
function convert_csv_string_to_array($csvstring) {
    $lines = explode(PHP_EOL, current($csvstring));
    $array = array();
    foreach ($lines as $key => $line) {
        if (substr(trim($line), -1) == ',') {
            $line = substr(trim($line), 0, -1);
        }
        if ($key == 0) {
            $head = str_getcsv($line);
        } else {
            $array[] = array_combine($head, str_getcsv($line));
        }
    }
    return $array;
}

On line 3: the code is $lines = explode(PHP_EOL, current($csvstring));
it should be $lines = explode(PHP_EOL, $csvstring); as current() expects array as an argument.