don't convert to xlsx, send as csv instead to prevent memory exhausting

taskExecuter.php

@@ -1,7 +1,5 @@
 <?php
 include "zefixAPI.php";
-include "read_write_xlsx.php";
-
 include "emailSender.php";
 
 $maxExecutionTime = 120;
@@ -19,31 +17,48 @@ function doRequest($data, $filename, $username, $password)
 {
     $response = sendAPICompanySearchRequest($username, $password, $data);
     $responseObject = json_decode($response, true);
+
     if(array_key_exists("error", $responseObject)) {
         return false;
     }
+
     $companyArray = $responseObject['list'];
     $companyData = array();
+
     foreach ($companyArray as $company) {
         $companyFullData = json_decode(sendAPICompanyInfoRequest($username, $password, $company['uid']), true)[0];
-        $companyData[] = [$companyFullData['name'], $companyFullData['address']['careOf'], $companyFullData['address']['street'], $companyFullData['address']['houseNumber'], $companyFullData['address']['swissZipCode'], $companyFullData['address']['city'],$companyFullData['uid'],$companyFullData['legalSeat'],$companyFullData['legalForm']['name']['de'],$companyFullData['status'],$companyFullData['sogcDate'],$companyFullData['deletionDate']];
+        $companyData[] = [
+            $companyFullData['name'],
+            $companyFullData['address']['careOf'],
+            $companyFullData['address']['street'],
+            $companyFullData['address']['houseNumber'],
+            $companyFullData['address']['swissZipCode'],
+            $companyFullData['address']['city'],
+            $companyFullData['uid'],
+            $companyFullData['legalSeat'],
+            $companyFullData['legalForm']['name']['de'],
+            $companyFullData['status'],
+            $companyFullData['sogcDate'],
+            $companyFullData['deletionDate']
+        ];
     }
+
     if (!file_exists($filename)) {
-        // If File doesn't exist yet
         $file = fopen($filename, 'w');
         if($file) {
             fputcsv($file, ['name', 'careOf', 'street', 'houseNumber', 'swissZipCode', 'city', 'uid', 'legalSeat', 'legalForm', 'status', 'sogcDate', 'deletionDate'], ',', '"', "\\");
         }
     } else {
-        // If file already exists
         $file = fopen($filename, 'a');
     }
+
     if ($file) {
         foreach ($companyData as $row){
             fputcsv($file, $row, ',', '"', "\\");
         }
         fclose($file);
     }
+
     if($responseObject['hasMoreResults']) {
         return $responseObject['maxOffset'] + 50;
     } else {
@@ -51,63 +66,45 @@ function doRequest($data, $filename, $username, $password)
     }
 }
 
-
-
-
-// Stop executing bevore reaching PHP Max Execution Time
-function convertcsvToXlsx(string $csvFile, string $xlsxFile)
-{
-    $csvData = [];
-
-    if (($handle = fopen($csvFile, "r")) !== false) {
-        while (($data = fgetcsv($handle, 1000, ",")) !== false) {
-            $csvData[] = $data;
-        }
-        fclose($handle);
-    } else {
-        echo "Failed to open $csvFile for reading.";
-    }
-
-    write_xlsxFile($xlsxFile, $csvData);
-}
-
 while($latesEndTime - time() > 30){
-    // If the directory for Tasks is already created
     if(is_dir($taskDir)) {
         $taskfiles = scandir($taskDir);
         $taskfiles = array_diff($taskfiles, array('.', '..'));
         sort($taskfiles);
-        // if there are any taks which are older then min oldness. To be sure the file writing process is finished.
+
         if(count($taskfiles) > 0 && intval(explode("-", $taskfiles[0])[0]) + $minTaskOldness < time()) {
             $taskString = file_get_contents($taskDir.'/'.$taskfiles[0]);
             $task = json_decode($taskString, true);
 
-            // if there are any requests to do, do the first
             if(count($task['requests']) > 0) {
-                $nextOffset = doRequest($task['requests'][0], str_replace(".json", ".csv", $downloadDir.'/'.$taskfiles[0]), $username , $password);
+                $csvFile = str_replace(".json", ".csv", $downloadDir.'/'.$taskfiles[0]);
+
+                $nextOffset = doRequest($task['requests'][0], $csvFile, $username, $password);
+
                 if($nextOffset){
                     $task['requests'][0]['offset'] = $nextOffset;
                 } else {
                     array_shift($task['requests']);
                 }
+
                 $taskString = json_encode($task);
                 $taskfile = fopen($taskDir.'/'.$taskfiles[0], 'w');
+
                 if($taskfile){
                     fwrite($taskfile, $taskString);
                     fclose($taskfile);
                 }
-            }
+            } else {
-            // if there are no Requests left, send the E-Mail
+                $csvFile = str_replace(".json", ".csv", $downloadDir.'/'.$taskfiles[0]);
-        else {
+
-                convertcsvToXlsx(str_replace(".json", ".csv", $downloadDir.'/'.$taskfiles[0]), str_replace(".json", ".xlsx", $downloadDir.'/'.$taskfiles[0]));
-                unlink(str_replace(".json", ".csv", $downloadDir.'/'.$taskfiles[0]));
                 unlink($taskDir.'/'.$taskfiles[0]);
+
                 echo "Task File deleted";
                 echo "<br>";
-                sendEmail($task['email'], str_replace(".json", ".xlsx", $downloadDir.'/'.$taskfiles[0]), $smtppassword);
+
+                sendEmail($task['email'], $csvFile, $smtppassword);
             }
         } else {
-            // acutal Time - start time
             echo "nothing to do after: ".strval(time() - ($latesEndTime - $maxExecutionTime));
             echo "sleeping 10 seconds";
             echo "<br>";