Problem with the fgetcsv() in php

I have the following piece of code to parse a csv file. After that I am displaying it. The .csv file is displaying perfectly on my local machine but on the server after clicking on upload a blank page is displaying.

function uploadTrainees()
{
    $csv = array();
    $tmpName = $_FILES['csv']['tmp_name'];
    //echo $tmpName;
    //ini_set('auto_detect_line_endings',true);
    $fp = fopen($tmpName,'r');
    $fields = array('delegate_title', 'delegate_firstname', 'delegate_lastname', 'delegate_jobtitle', 'dele开发者_运维知识库gate_email', 'delegate_phone', 'is_bringing_own_laptop');
    $records = array();

    while ($record = fgetcsv($fp,1000,','))
    {
        $records[] = array_combine($fields, $record);
    }
    fclose($fp);
}

Help me to solve this issue.

What version of PHP is the live server running?

The function array_combine() is only in PHP5

Edit

There is a function here to do this - http://snipplr.com/view/4918/arraycombine-for-php4/

if (!function_exists('array_combine'))
{
    function array_combine($arr1,$arr2) {
       $out = array();
       foreach ($arr1 as $key1 => $value1) {
        $out[$value1] = $arr2[$key1];
       }
       return $out;
    }
}