I was using PHP Excel to generate a large excel, but PHP Excel consume more memory, it consume 377.37 MB memory, so now i am tried to generate excel with spout excel library
in my case i have pre-generated excel file, i want to just write value of particular cell For Ex- modify value of D48
How can i do this with spout excel?
PHP Excel allow to access and modify particular cell
$objPHPExcel->getActiveSheet()->setCellValue('D48','New value');
Is there any methods like setCellValue() in Spout
There are no direct way to do that. You can take a look at this example: https://github.com/box/spout/wiki/Edit-an-existing-spreadsheet to achieve what you need though.
Just be aware that styles are not preserved when editing a spreadsheet.
Related
I need a phpspreadsheet code for reading data from csv file using vlookup and then writing it to multiple xlsx file depending on the criteria
Example:
Reading from this file
source
Getting output like this:
output
I might recommend the PhpSpreadsheet library, it's free and has great documentation on how to do this exact sort of thing.
How can I use php sql to export to Excel and NOT csv/tsv?
I have googled for it for a while but am only finding multiple results on exporting to csv.
Even if you just point me to the name of the method I can google it from there.
Thanks
You can use a lib like phpExcel or Spout to create (and read) excel files.
phpExcel : lots of options, but slow
spout : less options, but much faster than phpExcel
Is there any way to format the cells of a csv file with php ? For instance , i have a csv file that i need to format its cell's size before i export it.And another thing is that for numbers with many digits,the excel shows it in another format before i dobule click it and i want to get rid of this too.
header('Content-Type: text/csv; charset=utf-8');
header('Content-Disposition: attachment; filename=export.csv');
I know that i have to show what i have already tried,but i couldn't find any information about this,so i have nowhere to begin...
EDIT: The file is csv but i use it as an excel file,and the excel cells are the ones that need to be formated
CSV format consists of nothing more than raw values; there is no way of storing formatting or data type information. Which is why most, if not all, spreadsheet apps let the user manually set column types when importing a CSV file.
If you want to spare your users the hassle of doing that, your best bet would be generating an xls/xlsx rather than CSV. PHPExcel is a popular PHP library for generating Excel files, you might want to give it a try.
Since the accepted answer was written in 2014, the PHPExcel library has been abandoned. It's last version, 1.8.1, was released in 2015. It was officially deprecated in 2017 and permanently archived in 2019. It's direct successor is PhpSpreadsheet.
PHP can parse a CSV string into an array by using str_getcsv (http://php.net/str_getcsv). From there it's simply a matter of editing the values of the array.
As for more advanced features, the CSV format in itself does not support them since it's a pure text format and neither PHP nor the CSV file can decide how Excel should parse the file.
I've had success with exporting Excel XML files (the old, pure text XML files; not the new, zipped ones) and if data presentation is important for you, this might be the way to go.
There is one excel sheet which contains student name, rollno etc. How can i parse the contents of excel file and store that in my sql database?
You are looking for PHPExcel library i believe.
http://phpexcel.codeplex.com/
use this class to read the excel files
http://sourceforge.net/projects/phpexcelreader
If you want to do it directly from the Excel file, rather than create an intermediate CSV using Excel's "Save As" options, then look at libraries such as PHPExcel that can read the xls binary format and make the data accessible to your PHP script.
I'd recommend to you that you save it as csv, it's much more easier and less hacking to upload it to the database
here is simple a sample
http://www.bradino.com/php/csv-upload-to-database/
PHPExcel is one of the best PHP classes i have ever worked with. In addition to parsing and reading files of all Excel variations (including csv) the output to Excel 2007 + is excellent.
Be sure to look at the documentation and examples...they will get you up to speed very quickly
I have tabulated data in an Excel spreadsheet (file size will likely never be larger than 1 mb). I want to use PHP to parse the data and insert in to a MySQL database.
Is there any advantage to keeping the file as an .xls/.xlsx and parsing it using a PHP Excel Parsing Library? If so, what are some good libraries to use?
Obviuously, I can save the .xls/.xlsx as a CSV and handle the file that way.
Thanks!
If you are just after the values, I would save it as a CSV. This is much easier to parse programatically, especially if you are trying to do this on a non-windows box.
That being said, there will be information lost in the export to CSV. It will only save the values of the cells - not their formatting information, formulas, etc. If you need to use that information, you're better off doing this straight from Excel.
Here is a PHP Excel Reading library. If you decide to read Excel files directly, this may help get you started.
If your excel files contain strictly data and contain no formulas, scripts, macros and etc., I would say parsing through Excel will only add development overhead, and will potentially slow down processing. It would probably be best to convert the files to CSV in this case.
Also consider that MySQL's 'LOAD DATA INFILE' command can be used to import entire CSV files into a table, this can potentially further uncomplicate matters for you.
when you provide a way for customers to upload excel/csv files, you should consider that
CSV files will only export one sheet
Having multiline cells will make the CSV parsing complicated
You cannot easily detect corrupted/incomplete CSV files
CSV files do not include formatting
Besides from that, importing CSV is a lot easier than importing XLS.
Remember that if you're importing the csv file directly into Mysql, that you may have problems with the date format (as Mysql uses a different date format to Excel). I find it easier to change the date fields in Excel first (to format yyyy-mm-dd) prior to saving as a csv file.
Edit: Although I've not used it myself, others have recommended Navicat as a very good tool for converting Excel spreadsheets or Access data into Mysql databases. May be worth a look.
With Office 2003 there's an XML format called SpreadsheetML which is a bit in-between XML and Excel. I've considered using this format to import/export data to a web site but the format turns out to be a bit complex. Internally, this format turns all references into relative references. (Relative from the current location.) Worse, some cells have an index, thus you might see a row with only two cells, but the second cell might be 6 columns away from the first cell. (In which case Index=5.) Basically, if you want to use the Excel format, you will need to have a good way to calculate the position of each cell and know how to translate the references in the cells in a proper way.
If you're onlyinterested in the data, CSV would be much, much easier to implement. As an in-between solution, you could define an XML schema and add an XML mapping to your spreadsheet to export the data to an XML file. It's more complex than CSV i9mport/export, but also a bit more robust. But the Excel or Excel XML formats themselves are horrible to implement. (Or just a nice challenge, if you're a real XML expert.)