PhpExcel Reader: Couldn't read certain files - php

Question

Error Shows
->Warning: ZipArchive::getFromName(): Invalid or unitialized Zip object
When uploading files, and reading excel files, sometimes it shows that error message.
This is my code:
$pasFile = $_FILES['inputFileLocation']['name'];
$target_path = basename($pasFile);
if(move_uploaded_file($_FILES["inputFileLocation"]["tmp_name"], $target_path)){
require_once '../template/PHPExcel/Classes/PHPExcel.php';
$objReader = PHPExcel_IOFactory::createReader('Excel2007');
$worksheet_names = $objReader->listWorksheetNames($pasFile);
$countWorksheet = count($worksheet_names);
$optionSheetName = "<option></option>";
for($x = 0;$x < $countWorksheet;$x++){
$optionSheetName = $optionSheetName."<option value='".$worksheet_names[$x]."'>".$worksheet_names[$x]."</option>";
}
}
Thank you in advance! :)

Answer 1

My mistake! The file that I was uploading had different types of excel format.
This code now works by identifying the format then passing it to the create reader.
Many thanks to Mr. Baker!
I added this codes:
$inputFileType = PHPExcel_IOFactory::identify($pasFile);
$objReader = PHPExcel_IOFactory::createReader($inputFileType);
Resulting to this one:
$pasFile = $_FILES['inputFileLocation']['name'];
$target_path = basename($pasFile);
if(move_uploaded_file($_FILES["inputFileLocation"]["tmp_name"], $target_path)){
require_once '../template/PHPExcel/Classes/PHPExcel.php';
$inputFileType = PHPExcel_IOFactory::identify($pasFile);
$objReader = PHPExcel_IOFactory::createReader($inputFileType);
$worksheet_names = $objReader->listWorksheetNames($pasFile);
$countWorksheet = count($worksheet_names);
$optionSheetName = "<option></option>";
for($x = 0;$x < $countWorksheet;$x++){
$optionSheetName = $optionSheetName."<option value='".$worksheet_names[$x]."'>".$worksheet_names[$x]."</option>";
}
}
identify() first before createReader()...