[PHP 8.4] fgetcsv() deprecated warning in three more files (#4942)

* Fix fgetcsv parameters for better CSV parsing

* Modify fgetcsv parameters for better CSV parsing

* Add escape character to fgetcsv function

Author: addison74

app/code/core/Mage/Dataflow/Model/Convert/Iterator/Http.php

@@ -33,7 +33,7 @@ public function load()
             $uploader->save($path);
             if ($uploadFile = $uploader->getUploadedFileName()) {
                 $fp = fopen($uploadFile, 'rb');
-                while ($row = fgetcsv($fp)) {
+                while ($row = fgetcsv($fp, 0, ',', '"', '\\')) {
                     // check csv
                 }
                 fclose($fp);

app/code/core/Mage/Paypal/Model/Report/Settlement.php

@@ -246,7 +246,7 @@ public function parseCsv($localCsv, $format = 'new')
 
         $flippedSectionColumns = array_flip($sectionColumns);
         $fp = fopen($localCsv, 'r');
-        while ($line = fgetcsv($fp)) {
+        while ($line = fgetcsv($fp, 0, ',', '"', '\\')) {
             if (empty($line)) { // The line was empty, so skip it.
                 continue;
             }

lib/Varien/Io/File.php

@@ -198,7 +198,7 @@ public function streamReadCsv($delimiter = ',', $enclosure = '"')
         if (!$this->_streamHandler) {
             return false;
         }
-        return @fgetcsv($this->_streamHandler, 0, $delimiter, $enclosure);
+        return @fgetcsv($this->_streamHandler, 0, $delimiter, $enclosure, '\\');
     }
 
     /**