696 lines
26 KiB
Markdown
696 lines
26 KiB
Markdown
# Reading Files
|
||
|
||
## Security
|
||
|
||
XML-based formats such as OfficeOpen XML, Excel2003 XML, OASIS and
|
||
Gnumeric are susceptible to XML External Entity Processing (XXE)
|
||
injection attacks (for an explanation of XXE injection see
|
||
http://websec.io/2012/08/27/Preventing-XEE-in-PHP.html) when reading
|
||
spreadsheet files. This can lead to:
|
||
|
||
- Disclosure whether a file is existent
|
||
- Server Side Request Forgery
|
||
- Command Execution (depending on the installed PHP wrappers)
|
||
|
||
To prevent this, by default every XML-based Reader looks for XML entities declared inside the DOCTYPE and if any is found an exception is raised.
|
||
|
||
## Loading a Spreadsheet File
|
||
|
||
The simplest way to load a workbook file is to let PhpSpreadsheet's IO
|
||
Factory identify the file type and load it, calling the static `load()`
|
||
method of the `\PhpOffice\PhpSpreadsheet\IOFactory` class.
|
||
|
||
``` php
|
||
$inputFileName = './sampleData/example1.xls';
|
||
|
||
/** Load $inputFileName to a Spreadsheet Object **/
|
||
$spreadsheet = \PhpOffice\PhpSpreadsheet\IOFactory::load($inputFileName);
|
||
```
|
||
|
||
See `samples/Reader/01_Simple_file_reader_using_IOFactory.php` for a working
|
||
example of this code.
|
||
|
||
The `load()` method will attempt to identify the file type, and
|
||
instantiate a loader for that file type; using it to load the file and
|
||
store the data and any formatting in a `Spreadsheet` object.
|
||
|
||
The method makes an initial guess at the loader to instantiate based on
|
||
the file extension; but will test the file before actually executing the
|
||
load: so if (for example) the file is actually a CSV file or contains
|
||
HTML markup, but that has been given a .xls extension (quite a common
|
||
practise), it will reject the Xls loader that it would normally use for
|
||
a .xls file; and test the file using the other loaders until it finds
|
||
the appropriate loader, and then use that to read the file.
|
||
|
||
While easy to implement in your code, and you don't need to worry about
|
||
the file type; this isn't the most efficient method to load a file; and
|
||
it lacks the flexibility to configure the loader in any way before
|
||
actually reading the file into a `Spreadsheet` object.
|
||
|
||
## Creating a Reader and Loading a Spreadsheet File
|
||
|
||
If you know the file type of the spreadsheet file that you need to load,
|
||
you can instantiate a new reader object for that file type, then use the
|
||
reader's `load()` method to read the file to a `Spreadsheet` object. It is
|
||
possible to instantiate the reader objects for each of the different
|
||
supported filetype by name. However, you may get unpredictable results
|
||
if the file isn't of the right type (e.g. it is a CSV with an extension
|
||
of .xls), although this type of exception should normally be trapped.
|
||
|
||
``` php
|
||
$inputFileName = './sampleData/example1.xls';
|
||
|
||
/** Create a new Xls Reader **/
|
||
$reader = new \PhpOffice\PhpSpreadsheet\Reader\Xls();
|
||
// $reader = new \PhpOffice\PhpSpreadsheet\Reader\Xlsx();
|
||
// $reader = new \PhpOffice\PhpSpreadsheet\Reader\Xml();
|
||
// $reader = new \PhpOffice\PhpSpreadsheet\Reader\Ods();
|
||
// $reader = new \PhpOffice\PhpSpreadsheet\Reader\Slk();
|
||
// $reader = new \PhpOffice\PhpSpreadsheet\Reader\Gnumeric();
|
||
// $reader = new \PhpOffice\PhpSpreadsheet\Reader\Csv();
|
||
/** Load $inputFileName to a Spreadsheet Object **/
|
||
$spreadsheet = $reader->load($inputFileName);
|
||
```
|
||
|
||
See `samples/Reader/02_Simple_file_reader_using_a_specified_reader.php`
|
||
for a working example of this code.
|
||
|
||
Alternatively, you can use the IO Factory's `createReader()` method to
|
||
instantiate the reader object for you, simply telling it the file type
|
||
of the reader that you want instantiating.
|
||
|
||
``` php
|
||
$inputFileType = 'Xls';
|
||
// $inputFileType = 'Xlsx';
|
||
// $inputFileType = 'Xml';
|
||
// $inputFileType = 'Ods';
|
||
// $inputFileType = 'Slk';
|
||
// $inputFileType = 'Gnumeric';
|
||
// $inputFileType = 'Csv';
|
||
$inputFileName = './sampleData/example1.xls';
|
||
|
||
/** Create a new Reader of the type defined in $inputFileType **/
|
||
$reader = \PhpOffice\PhpSpreadsheet\IOFactory::createReader($inputFileType);
|
||
/** Load $inputFileName to a Spreadsheet Object **/
|
||
$spreadsheet = $reader->load($inputFileName);
|
||
```
|
||
|
||
See `samples/Reader/03_Simple_file_reader_using_the_IOFactory_to_return_a_reader.php`
|
||
for a working example of this code.
|
||
|
||
If you're uncertain of the filetype, you can use the IO Factory's
|
||
identify() method to identify the reader that you need, before using the
|
||
createReader() method to instantiate the reader object.
|
||
|
||
``` php
|
||
$inputFileName = './sampleData/example1.xls';
|
||
|
||
/** Identify the type of $inputFileName **/
|
||
$inputFileType = \PhpOffice\PhpSpreadsheet\IOFactory::identify($inputFileName);
|
||
/** Create a new Reader of the type that has been identified **/
|
||
$reader = \PhpOffice\PhpSpreadsheet\IOFactory::createReader($inputFileType);
|
||
/** Load $inputFileName to a Spreadsheet Object **/
|
||
$spreadsheet = $reader->load($inputFileName);
|
||
```
|
||
|
||
See `samples/Reader/04_Simple_file_reader_using_the_IOFactory_to_identify_a_reader_to_use.php`
|
||
for a working example of this code.
|
||
|
||
## Spreadsheet Reader Options
|
||
|
||
Once you have created a reader object for the workbook that you want to
|
||
load, you have the opportunity to set additional options before
|
||
executing the `load()` method.
|
||
|
||
### Reading Only Data from a Spreadsheet File
|
||
|
||
If you're only interested in the cell values in a workbook, but don't
|
||
need any of the cell formatting information, then you can set the reader
|
||
to read only the data values and any formulae from each cell using the
|
||
setReadDataOnly() method.
|
||
|
||
``` php
|
||
$inputFileType = 'Xls';
|
||
$inputFileName = './sampleData/example1.xls';
|
||
|
||
/** Create a new Reader of the type defined in $inputFileType **/
|
||
$reader = \PhpOffice\PhpSpreadsheet\IOFactory::createReader($inputFileType);
|
||
/** Advise the Reader that we only want to load cell data **/
|
||
$reader->setReadDataOnly(true);
|
||
/** Load $inputFileName to a Spreadsheet Object **/
|
||
$spreadsheet = $reader->load($inputFileName);
|
||
```
|
||
|
||
See `samples/Reader/05_Simple_file_reader_using_the_read_data_only_option.php`
|
||
for a working example of this code.
|
||
|
||
It is important to note that Workbooks (and PhpSpreadsheet) store dates
|
||
and times as simple numeric values: they can only be distinguished from
|
||
other numeric values by the format mask that is applied to that cell.
|
||
When setting read data only to true, PhpSpreadsheet doesn't read the
|
||
cell format masks, so it is not possible to differentiate between
|
||
dates/times and numbers.
|
||
|
||
The Gnumeric loader has been written to read the format masks for date
|
||
values even when read data only has been set to true, so it can
|
||
differentiate between dates/times and numbers; but this change hasn't
|
||
yet been implemented for the other readers.
|
||
|
||
Reading Only Data from a Spreadsheet File applies to Readers:
|
||
|
||
Reader | Y/N |Reader | Y/N |Reader | Y/N |
|
||
----------|:---:|--------|:---:|--------------|:---:|
|
||
Xlsx | YES | Xls | YES | Xml | YES |
|
||
Ods | YES | SYLK | NO | Gnumeric | YES |
|
||
CSV | NO | HTML | NO
|
||
|
||
### Reading Only Named WorkSheets from a File
|
||
|
||
If your workbook contains a number of worksheets, but you are only
|
||
interested in reading some of those, then you can use the
|
||
setLoadSheetsOnly() method to identify those sheets you are interested
|
||
in reading.
|
||
|
||
To read a single sheet, you can pass that sheet name as a parameter to
|
||
the `setLoadSheetsOnly()` method.
|
||
|
||
``` php
|
||
$inputFileType = 'Xls';
|
||
$inputFileName = './sampleData/example1.xls';
|
||
$sheetname = 'Data Sheet #2';
|
||
|
||
/** Create a new Reader of the type defined in $inputFileType **/
|
||
$reader = \PhpOffice\PhpSpreadsheet\IOFactory::createReader($inputFileType);
|
||
/** Advise the Reader of which WorkSheets we want to load **/
|
||
$reader->setLoadSheetsOnly($sheetname);
|
||
/** Load $inputFileName to a Spreadsheet Object **/
|
||
$spreadsheet = $reader->load($inputFileName);
|
||
```
|
||
|
||
See `samples/Reader/07_Simple_file_reader_loading_a_single_named_worksheet.php`
|
||
for a working example of this code.
|
||
|
||
If you want to read more than just a single sheet, you can pass a list
|
||
of sheet names as an array parameter to the `setLoadSheetsOnly()` method.
|
||
|
||
``` php
|
||
$inputFileType = 'Xls';
|
||
$inputFileName = './sampleData/example1.xls';
|
||
$sheetnames = array('Data Sheet #1','Data Sheet #3');
|
||
|
||
/** Create a new Reader of the type defined in $inputFileType **/
|
||
$reader = \PhpOffice\PhpSpreadsheet\IOFactory::createReader($inputFileType);
|
||
/** Advise the Reader of which WorkSheets we want to load **/
|
||
$reader->setLoadSheetsOnly($sheetnames);
|
||
/** Load $inputFileName to a Spreadsheet Object **/
|
||
$spreadsheet = $reader->load($inputFileName);
|
||
```
|
||
|
||
See `samples/Reader/08_Simple_file_reader_loading_several_named_worksheets.php`
|
||
for a working example of this code.
|
||
|
||
To reset this option to the default, you can call the `setLoadAllSheets()`
|
||
method.
|
||
|
||
``` php
|
||
$inputFileType = 'Xls';
|
||
$inputFileName = './sampleData/example1.xls';
|
||
|
||
/** Create a new Reader of the type defined in $inputFileType **/
|
||
$reader = \PhpOffice\PhpSpreadsheet\IOFactory::createReader($inputFileType);
|
||
/** Advise the Reader to load all Worksheets **/
|
||
$reader->setLoadAllSheets();
|
||
/** Load $inputFileName to a Spreadsheet Object **/
|
||
$spreadsheet = $reader->load($inputFileName);
|
||
```
|
||
|
||
See `samples/Reader/06_Simple_file_reader_loading_all_worksheets.php` for a
|
||
working example of this code.
|
||
|
||
Reading Only Named WorkSheets from a File applies to Readers:
|
||
|
||
Reader | Y/N |Reader | Y/N |Reader | Y/N |
|
||
----------|:---:|--------|:---:|--------------|:---:|
|
||
Xlsx | YES | Xls | YES | Xml | YES |
|
||
Ods | YES | SYLK | NO | Gnumeric | YES |
|
||
CSV | NO | HTML | NO
|
||
|
||
### Reading Only Specific Columns and Rows from a File (Read Filters)
|
||
|
||
If you are only interested in reading part of a worksheet, then you can
|
||
write a filter class that identifies whether or not individual cells
|
||
should be read by the loader. A read filter must implement the
|
||
\PhpOffice\PhpSpreadsheet\Reader\IReadFilter interface, and contain a
|
||
readCell() method that accepts arguments of `$column`, `$row` and
|
||
`$worksheetName`, and return a boolean true or false that indicates
|
||
whether a workbook cell identified by those arguments should be read or
|
||
not.
|
||
|
||
``` php
|
||
$inputFileType = 'Xls';
|
||
$inputFileName = './sampleData/example1.xls';
|
||
$sheetname = 'Data Sheet #3';
|
||
|
||
|
||
/** Define a Read Filter class implementing \PhpOffice\PhpSpreadsheet\Reader\IReadFilter */
|
||
class MyReadFilter implements \PhpOffice\PhpSpreadsheet\Reader\IReadFilter
|
||
{
|
||
public function readCell($column, $row, $worksheetName = '') {
|
||
// Read rows 1 to 7 and columns A to E only
|
||
if ($row >= 1 && $row <= 7) {
|
||
if (in_array($column,range('A','E'))) {
|
||
return true;
|
||
}
|
||
}
|
||
return false;
|
||
}
|
||
}
|
||
|
||
/** Create an Instance of our Read Filter **/
|
||
$filterSubset = new MyReadFilter();
|
||
|
||
/** Create a new Reader of the type defined in $inputFileType **/
|
||
$reader = \PhpOffice\PhpSpreadsheet\IOFactory::createReader($inputFileType);
|
||
/** Tell the Reader that we want to use the Read Filter **/
|
||
$reader->setReadFilter($filterSubset);
|
||
/** Load only the rows and columns that match our filter to Spreadsheet **/
|
||
$spreadsheet = $reader->load($inputFileName);
|
||
```
|
||
|
||
See `samples/Reader/09_Simple_file_reader_using_a_read_filter.php` for a
|
||
working example of this code.
|
||
|
||
This example is not particularly useful, because it can only be used in
|
||
a very specific circumstance (when you only want cells in the range
|
||
A1:E7 from your worksheet. A generic Read Filter would probably be more
|
||
useful:
|
||
|
||
``` php
|
||
/** Define a Read Filter class implementing \PhpOffice\PhpSpreadsheet\Reader\IReadFilter */
|
||
class MyReadFilter implements \PhpOffice\PhpSpreadsheet\Reader\IReadFilter
|
||
{
|
||
private $startRow = 0;
|
||
private $endRow = 0;
|
||
private $columns = array();
|
||
|
||
/** Get the list of rows and columns to read */
|
||
public function __construct($startRow, $endRow, $columns) {
|
||
$this->startRow = $startRow;
|
||
$this->endRow = $endRow;
|
||
$this->columns = $columns;
|
||
}
|
||
|
||
public function readCell($column, $row, $worksheetName = '') {
|
||
// Only read the rows and columns that were configured
|
||
if ($row >= $this->startRow && $row <= $this->endRow) {
|
||
if (in_array($column,$this->columns)) {
|
||
return true;
|
||
}
|
||
}
|
||
return false;
|
||
}
|
||
}
|
||
|
||
/** Create an Instance of our Read Filter, passing in the cell range **/
|
||
$filterSubset = new MyReadFilter(9,15,range('G','K'));
|
||
```
|
||
|
||
See `samples/Reader/10_Simple_file_reader_using_a_configurable_read_filter.php`
|
||
for a working example of this code.
|
||
|
||
This can be particularly useful for conserving memory, by allowing you
|
||
to read and process a large workbook in "chunks": an example of this
|
||
usage might be when transferring data from an Excel worksheet to a
|
||
database.
|
||
|
||
``` php
|
||
$inputFileType = 'Xls';
|
||
$inputFileName = './sampleData/example2.xls';
|
||
|
||
|
||
/** Define a Read Filter class implementing \PhpOffice\PhpSpreadsheet\Reader\IReadFilter */
|
||
class ChunkReadFilter implements \PhpOffice\PhpSpreadsheet\Reader\IReadFilter
|
||
{
|
||
private $startRow = 0;
|
||
private $endRow = 0;
|
||
|
||
/** Set the list of rows that we want to read */
|
||
public function setRows($startRow, $chunkSize) {
|
||
$this->startRow = $startRow;
|
||
$this->endRow = $startRow + $chunkSize;
|
||
}
|
||
|
||
public function readCell($column, $row, $worksheetName = '') {
|
||
// Only read the heading row, and the configured rows
|
||
if (($row == 1) || ($row >= $this->startRow && $row < $this->endRow)) {
|
||
return true;
|
||
}
|
||
return false;
|
||
}
|
||
}
|
||
|
||
|
||
/** Create a new Reader of the type defined in $inputFileType **/
|
||
$reader = \PhpOffice\PhpSpreadsheet\IOFactory::createReader($inputFileType);
|
||
|
||
|
||
/** Define how many rows we want to read for each "chunk" **/
|
||
$chunkSize = 2048;
|
||
/** Create a new Instance of our Read Filter **/
|
||
$chunkFilter = new ChunkReadFilter();
|
||
|
||
/** Tell the Reader that we want to use the Read Filter **/
|
||
$reader->setReadFilter($chunkFilter);
|
||
|
||
/** Loop to read our worksheet in "chunk size" blocks **/
|
||
for ($startRow = 2; $startRow <= 65536; $startRow += $chunkSize) {
|
||
/** Tell the Read Filter which rows we want this iteration **/
|
||
$chunkFilter->setRows($startRow,$chunkSize);
|
||
/** Load only the rows that match our filter **/
|
||
$spreadsheet = $reader->load($inputFileName);
|
||
// Do some processing here
|
||
}
|
||
```
|
||
|
||
See `samples/Reader/12_Reading_a_workbook_in_chunks_using_a_configurable_read_filter_`
|
||
for a working example of this code.
|
||
|
||
Using Read Filters applies to:
|
||
|
||
Reader | Y/N |Reader | Y/N |Reader | Y/N |
|
||
----------|:---:|--------|:---:|--------------|:---:|
|
||
Xlsx | YES | Xls | YES | Xml | YES |
|
||
Ods | YES | SYLK | NO | Gnumeric | YES |
|
||
CSV | YES | HTML | NO | | |
|
||
|
||
### Combining Multiple Files into a Single Spreadsheet Object
|
||
|
||
While you can limit the number of worksheets that are read from a
|
||
workbook file using the `setLoadSheetsOnly()` method, certain readers also
|
||
allow you to combine several individual "sheets" from different files
|
||
into a single `Spreadsheet` object, where each individual file is a
|
||
single worksheet within that workbook. For each file that you read, you
|
||
need to indicate which worksheet index it should be loaded into using
|
||
the `setSheetIndex()` method of the `$reader`, then use the
|
||
`loadIntoExisting()` method rather than the `load()` method to actually read
|
||
the file into that worksheet.
|
||
|
||
``` php
|
||
$inputFileType = 'Csv';
|
||
$inputFileNames = array('./sampleData/example1.csv',
|
||
'./sampleData/example2.csv'
|
||
'./sampleData/example3.csv'
|
||
);
|
||
|
||
/** Create a new Reader of the type defined in $inputFileType **/
|
||
$reader = \PhpOffice\PhpSpreadsheet\IOFactory::createReader($inputFileType);
|
||
|
||
|
||
/** Extract the first named file from the array list **/
|
||
$inputFileName = array_shift($inputFileNames);
|
||
/** Load the initial file to the first worksheet in a `Spreadsheet` Object **/
|
||
$spreadsheet = $reader->load($inputFileName);
|
||
/** Set the worksheet title (to the filename that we've loaded) **/
|
||
$spreadsheet->getActiveSheet()
|
||
->setTitle(pathinfo($inputFileName,PATHINFO_BASENAME));
|
||
|
||
|
||
/** Loop through all the remaining files in the list **/
|
||
foreach($inputFileNames as $sheet => $inputFileName) {
|
||
/** Increment the worksheet index pointer for the Reader **/
|
||
$reader->setSheetIndex($sheet+1);
|
||
/** Load the current file into a new worksheet in Spreadsheet **/
|
||
$reader->loadIntoExisting($inputFileName,$spreadsheet);
|
||
/** Set the worksheet title (to the filename that we've loaded) **/
|
||
$spreadsheet->getActiveSheet()
|
||
->setTitle(pathinfo($inputFileName,PATHINFO_BASENAME));
|
||
}
|
||
```
|
||
|
||
See `samples/Reader/13_Simple_file_reader_for_multiple_CSV_files.php` for a
|
||
working example of this code.
|
||
|
||
Note that using the same sheet index for multiple sheets won't append
|
||
files into the same sheet, but overwrite the results of the previous
|
||
load. You cannot load multiple CSV files into the same worksheet.
|
||
|
||
Combining Multiple Files into a Single Spreadsheet Object applies to:
|
||
|
||
Reader | Y/N |Reader | Y/N |Reader | Y/N |
|
||
----------|:---:|--------|:---:|--------------|:---:|
|
||
Xlsx | NO | Xls | NO | Xml | NO |
|
||
Ods | NO | SYLK | YES | Gnumeric | NO |
|
||
CSV | YES | HTML | NO
|
||
|
||
### Combining Read Filters with the setSheetIndex() method to split a large CSV file across multiple Worksheets
|
||
|
||
An Xls BIFF .xls file is limited to 65536 rows in a worksheet, while the
|
||
Xlsx Microsoft Office Open XML SpreadsheetML .xlsx file is limited to
|
||
1,048,576 rows in a worksheet; but a CSV file is not limited other than
|
||
by available disk space. This means that we wouldn’t ordinarily be able
|
||
to read all the rows from a very large CSV file that exceeded those
|
||
limits, and save it as an Xls or Xlsx file. However, by using Read
|
||
Filters to read the CSV file in "chunks" (using the ChunkReadFilter
|
||
Class that we defined in [the above section](#reading-only-specific-columns-and-rows-from-a-file-read-filters),
|
||
and the `setSheetIndex()` method of the `$reader`, we can split the CSV
|
||
file across several individual worksheets.
|
||
|
||
``` php
|
||
$inputFileType = 'Csv';
|
||
$inputFileName = './sampleData/example2.csv';
|
||
|
||
|
||
echo 'Loading file ',pathinfo($inputFileName,PATHINFO_BASENAME),' using IOFactory with a defined reader type of ',$inputFileType,'<br />';
|
||
/** Create a new Reader of the type defined in $inputFileType **/
|
||
$reader = \PhpOffice\PhpSpreadsheet\IOFactory::createReader($inputFileType);
|
||
|
||
|
||
/** Define how many rows we want to read for each "chunk" **/
|
||
$chunkSize = 65530;
|
||
/** Create a new Instance of our Read Filter **/
|
||
$chunkFilter = new ChunkReadFilter();
|
||
|
||
/** Tell the Reader that we want to use the Read Filter **/
|
||
/** and that we want to store it in contiguous rows/columns **/
|
||
|
||
$reader->setReadFilter($chunkFilter)
|
||
->setContiguous(true);
|
||
|
||
/** Instantiate a new Spreadsheet object manually **/
|
||
$spreadsheet = new \PhpOffice\PhpSpreadsheet\Spreadsheet();
|
||
|
||
/** Set a sheet index **/
|
||
$sheet = 0;
|
||
/** Loop to read our worksheet in "chunk size" blocks **/
|
||
/** $startRow is set to 2 initially because we always read the headings in row #1 **/
|
||
for ($startRow = 2; $startRow <= 1000000; $startRow += $chunkSize) {
|
||
/** Tell the Read Filter which rows we want to read this loop **/
|
||
$chunkFilter->setRows($startRow,$chunkSize);
|
||
|
||
/** Increment the worksheet index pointer for the Reader **/
|
||
$reader->setSheetIndex($sheet);
|
||
/** Load only the rows that match our filter into a new worksheet **/
|
||
$reader->loadIntoExisting($inputFileName,$spreadsheet);
|
||
/** Set the worksheet title for the sheet that we've justloaded) **/
|
||
/** and increment the sheet index as well **/
|
||
$spreadsheet->getActiveSheet()->setTitle('Country Data #'.(++$sheet));
|
||
}
|
||
```
|
||
|
||
See `samples/Reader/14_Reading_a_large_CSV_file_in_chunks_to_split_across_multiple_worksheets.php`
|
||
for a working example of this code.
|
||
|
||
This code will read 65,530 rows at a time from the CSV file that we’re
|
||
loading, and store each "chunk" in a new worksheet.
|
||
|
||
The `setContiguous()` method for the Reader is important here. It is
|
||
applicable only when working with a Read Filter, and identifies whether
|
||
or not the cells should be stored by their position within the CSV file,
|
||
or their position relative to the filter.
|
||
|
||
For example, if the filter returned true for cells in the range B2:C3,
|
||
then with setContiguous set to false (the default) these would be loaded
|
||
as B2:C3 in the `Spreadsheet` object; but with setContiguous set to
|
||
true, they would be loaded as A1:B2.
|
||
|
||
Splitting a single loaded file across multiple worksheets applies to:
|
||
|
||
Reader | Y/N |Reader | Y/N |Reader | Y/N |
|
||
----------|:---:|--------|:---:|--------------|:---:|
|
||
Xlsx | NO | Xls | NO | Xml | NO |
|
||
Ods | NO | SYLK | NO | Gnumeric | NO |
|
||
CSV | YES | HTML | NO
|
||
|
||
### Pipe or Tab Separated Value Files
|
||
|
||
The CSV loader will attempt to auto-detect the separator used in the file. If it
|
||
cannot auto-detect, it will default to the comma. If this does not fit your
|
||
use-case, you can manually specify a separator by using the `setDelimiter()`
|
||
method.
|
||
|
||
``` php
|
||
$inputFileType = 'Csv';
|
||
$inputFileName = './sampleData/example1.tsv';
|
||
|
||
/** Create a new Reader of the type defined in $inputFileType **/
|
||
$reader = \PhpOffice\PhpSpreadsheet\IOFactory::createReader($inputFileType);
|
||
/** Set the delimiter to a TAB character **/
|
||
$reader->setDelimiter("\t");
|
||
// $reader->setDelimiter('|');
|
||
|
||
/** Load the file to a Spreadsheet Object **/
|
||
$spreadsheet = $reader->load($inputFileName);
|
||
```
|
||
|
||
See `samples/Reader/15_Simple_file_reader_for_tab_separated_value_file_using_the_Advanced_Value_Binder.php`
|
||
for a working example of this code.
|
||
|
||
In addition to the delimiter, you can also use the following methods to
|
||
set other attributes for the data load:
|
||
|
||
Method | Default
|
||
-------------------|----------
|
||
setEnclosure() | `"`
|
||
setLineEnding() | `PHP_EOL`
|
||
setInputEncoding() | `UTF-8`
|
||
|
||
Setting CSV delimiter applies to:
|
||
|
||
Reader | Y/N |Reader | Y/N |Reader | Y/N |
|
||
----------|:---:|--------|:---:|--------------|:---:|
|
||
Xlsx | NO | Xls | NO | Xml | NO |
|
||
Ods | NO | SYLK | NO | Gnumeric | NO |
|
||
CSV | YES | HTML | NO
|
||
|
||
### A Brief Word about the Advanced Value Binder
|
||
|
||
When loading data from a file that contains no formatting information,
|
||
such as a CSV file, then data is read either as strings or numbers
|
||
(float or integer). This means that PhpSpreadsheet does not
|
||
automatically recognise dates/times (such as "16-Apr-2009" or "13:30"),
|
||
booleans ("TRUE" or "FALSE"), percentages ("75%"), hyperlinks
|
||
("http://www.phpexcel.net"), etc as anything other than simple strings.
|
||
However, you can apply additional processing that is executed against
|
||
these values during the load process within a Value Binder.
|
||
|
||
A Value Binder is a class that implement the
|
||
\PhpOffice\PhpSpreadsheet\Cell\IValueBinder interface. It must contain a
|
||
bindValue() method that accepts a \PhpOffice\PhpSpreadsheet\Cell and a
|
||
value as arguments, and return a boolean true or false that indicates
|
||
whether the workbook cell has been populated with the value or not. The
|
||
Advanced Value Binder implements such a class: amongst other tests, it
|
||
identifies a string comprising "TRUE" or "FALSE" (based on locale
|
||
settings) and sets it to a boolean; or a number in scientific format
|
||
(e.g. "1.234e-5") and converts it to a float; or dates and times,
|
||
converting them to their Excel timestamp value – before storing the
|
||
value in the cell object. It also sets formatting for strings that are
|
||
identified as dates, times or percentages. It could easily be extended
|
||
to provide additional handling (including text or cell formatting) when
|
||
it encountered a hyperlink, or HTML markup within a CSV file.
|
||
|
||
So using a Value Binder allows a great deal more flexibility in the
|
||
loader logic when reading unformatted text files.
|
||
|
||
``` php
|
||
/** Tell PhpSpreadsheet that we want to use the Advanced Value Binder **/
|
||
\PhpOffice\PhpSpreadsheet\Cell::setValueBinder( new \PhpOffice\PhpSpreadsheet\Cell\AdvancedValueBinder() );
|
||
|
||
$inputFileType = 'Csv';
|
||
$inputFileName = './sampleData/example1.tsv';
|
||
|
||
$reader = \PhpOffice\PhpSpreadsheet\IOFactory::createReader($inputFileType);
|
||
$reader->setDelimiter("\t");
|
||
$spreadsheet = $reader->load($inputFileName);
|
||
```
|
||
|
||
See `samples/Reader/15_Simple_file_reader_for_tab_separated_value_file_using_the_Advanced_Value_Binder.php`
|
||
for a working example of this code.
|
||
|
||
Loading using a Value Binder applies to:
|
||
|
||
Reader | Y/N |Reader | Y/N |Reader | Y/N
|
||
----------|:---:|--------|:---:|--------------|:---:
|
||
Xlsx | NO | Xls | NO | Xml | NO
|
||
Ods | NO | SYLK | NO | Gnumeric | NO
|
||
CSV | YES | HTML | YES
|
||
|
||
## Error Handling
|
||
|
||
Of course, you should always apply some error handling to your scripts
|
||
as well. PhpSpreadsheet throws exceptions, so you can wrap all your code
|
||
that accesses the library methods within Try/Catch blocks to trap for
|
||
any problems that are encountered, and deal with them in an appropriate
|
||
manner.
|
||
|
||
The PhpSpreadsheet Readers throw a
|
||
\PhpOffice\PhpSpreadsheet\Reader\Exception.
|
||
|
||
``` php
|
||
$inputFileName = './sampleData/example-1.xls';
|
||
|
||
try {
|
||
/** Load $inputFileName to a Spreadsheet Object **/
|
||
$spreadsheet = \PhpOffice\PhpSpreadsheet\IOFactory::load($inputFileName);
|
||
} catch(\PhpOffice\PhpSpreadsheet\Reader\Exception $e) {
|
||
die('Error loading file: '.$e->getMessage());
|
||
}
|
||
```
|
||
|
||
See `samples/Reader/16_Handling_loader_exceptions_using_TryCatch.php` for a
|
||
working example of this code.
|
||
|
||
## Helper Methods
|
||
|
||
You can retrieve a list of worksheet names contained in a file without
|
||
loading the whole file by using the Reader’s `listWorksheetNames()`
|
||
method; similarly, a `listWorksheetInfo()` method will retrieve the
|
||
dimensions of worksheet in a file without needing to load and parse the
|
||
whole file.
|
||
|
||
### listWorksheetNames
|
||
|
||
The `listWorksheetNames()` method returns a simple array listing each
|
||
worksheet name within the workbook:
|
||
|
||
``` php
|
||
$reader = \PhpOffice\PhpSpreadsheet\IOFactory::createReader($inputFileType);
|
||
|
||
$worksheetNames = $reader->listWorksheetNames($inputFileName);
|
||
|
||
echo '<h3>Worksheet Names</h3>';
|
||
echo '<ol>';
|
||
foreach ($worksheetNames as $worksheetName) {
|
||
echo '<li>', $worksheetName, '</li>';
|
||
}
|
||
echo '</ol>';
|
||
```
|
||
|
||
See `samples/Reader/18_Reading_list_of_worksheets_without_loading_entire_file.php`
|
||
for a working example of this code.
|
||
|
||
### listWorksheetInfo
|
||
|
||
The `listWorksheetInfo()` method returns a nested array, with each entry
|
||
listing the name and dimensions for a worksheet:
|
||
|
||
``` php
|
||
$reader = \PhpOffice\PhpSpreadsheet\IOFactory::createReader($inputFileType);
|
||
|
||
$worksheetData = $reader->listWorksheetInfo($inputFileName);
|
||
|
||
echo '<h3>Worksheet Information</h3>';
|
||
echo '<ol>';
|
||
foreach ($worksheetData as $worksheet) {
|
||
echo '<li>', $worksheet['worksheetName'], '<br />';
|
||
echo 'Rows: ', $worksheet['totalRows'],
|
||
' Columns: ', $worksheet['totalColumns'], '<br />';
|
||
echo 'Cell Range: A1:',
|
||
$worksheet['lastColumnLetter'], $worksheet['totalRows'];
|
||
echo '</li>';
|
||
}
|
||
echo '</ol>';
|
||
```
|
||
|
||
See `samples/Reader/19_Reading_worksheet_information_without_loading_entire_file.php`
|
||
for a working example of this code.
|