Need to support PHP5.3 for a client unfortunately

src/Spout/Common/Escaper/XLSX.php

@@ -58,8 +58,8 @@ class XLSX implements EscaperInterface
      */
     protected function getControlCharactersEscapingMap()
     {
-        $controlCharactersEscapingMap = [];
-        $whitelistedControlCharacters = ["\t", "\r", "\n"];
+        $controlCharactersEscapingMap = array();
+        $whitelistedControlCharacters = array("\t", "\r", "\n");
 
         // control characters values are from 0 to 1F (hex values) in the ASCII table
         for ($charValue = 0x0; $charValue <= 0x1F; $charValue++) {

src/Spout/Reader/Helper/XLSX/SharedStringsHelper.php

@@ -145,9 +145,9 @@ class SharedStringsHelper
      */
     protected function removeSuperfluousTextNodes($parentNode)
     {
-        $tagsToRemove = [
+        $tagsToRemove = array(
             'rPh', // Pronunciation of the text
-        ];
+        );
 
         foreach ($tagsToRemove as $tagToRemove) {
             $xpath = '//ns:' . $tagToRemove;

src/Spout/Reader/Helper/XLSX/WorksheetHelper.php

@@ -40,7 +40,7 @@ class WorksheetHelper
      */
     public function getWorksheets()
     {
-        $worksheets = [];
+        $worksheets = array();
 
         $xmlContents = file_get_contents('zip://' . $this->filePath . '#' . self::CONTENT_TYPES_XML_FILE_PATH);
 

src/Spout/Reader/XLSX.php

@@ -185,7 +185,7 @@ class XLSX extends AbstractReader
         }
 
         $isInsideRowTag = false;
-        $rowData = [];
+        $rowData = array();
 
         while ($this->xmlReader->read()) {
             if ($this->xmlReader->nodeType == \XMLReader::ELEMENT && $this->xmlReader->name === 'dimension') {
@@ -230,7 +230,7 @@ class XLSX extends AbstractReader
         }
 
         // no data means "end of file"
-        return ($rowData !== []) ? $rowData : null;
+        return ($rowData !== array()) ? $rowData : null;
     }
 
     /**

src/Spout/Writer/Helper/XLSX/FileSystemHelper.php

@@ -179,7 +179,8 @@ EOD;
      */
     protected function createCoreXmlFile()
     {
-        $createdDate = (new \DateTime())->format('c');
+        $dt = new \DateTime();
+        $createdDate = $dt->format('c');
         $coreXmlFileContents = <<<EOD
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
 <cp:coreProperties xmlns:cp="http://schemas.openxmlformats.org/package/2006/metadata/core-properties" xmlns:dcmitype="http://purl.org/dc/dcmitype/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

src/Spout/Writer/Internal/XLSX/Workbook.php

@@ -36,7 +36,7 @@ class Workbook
     protected $sharedStringsHelper;
 
     /** @var Worksheet[] Array containing the workbook's sheets */
-    protected $worksheets = [];
+    protected $worksheets = array();
 
     /** @var Worksheet The worksheet where data will be written to */
     protected $currentWorksheet;

src/Spout/Writer/XLSX.php

@@ -88,7 +88,7 @@ class XLSX extends AbstractWriter
     {
         $this->throwIfBookIsNotAvailable();
 
-        $externalSheets = [];
+        $externalSheets = array();
         $worksheets = $this->book->getWorksheets();
 
         /** @var Internal\XLSX\Worksheet $worksheet */