Create CSV from Associative Array - PHP

assocCSV.php

$header=null;
//header nulled first line will make not nulled thus creating csv with header values

$pathToGenerate = "path to new file location including filename";
//create directory if does not exist beforehand, file will be created or override in fopen with w+ flag
$createFile = fopen($pathToGenerate,"w+");

foreach ($assocArray as $row) {
    if(!$header){
    //this matches the first line to create header values
        fputcsv($createFile,array_keys($row));
    }else{
    //this will fill information per row 
    fputcsv($createFile, $row);
    }
}
//this closes the file
fclose($createFile);