Php binary file size

I was not able to max out my 10mbps connection when was used. I found out that using would use all the available bandwidth.

When outputing binary data with fread, do not assume that or is the optimal value for you. Do some benchmarks by downloading files through your script. Concerning [problems with UTF-8 and] downloading Zip files I found that simply adding 3 lines of code before starting the fread to the buffer for delivery in all browsers solved the problem.

This value must be set extremely high if you plan to serve large files. I was trying to implement resume support in download script, and i have finnaly succeded. It might be worth noting that if your site uses a front controller with sessions and you send a large file to a user; you should end the session just before sending the file, otherwise the user will not be able to continue continue browsing the site while the file is downloading. Just a note for anybody trying to implement a php handled download script - We spent a long time trying to figure out why our code was eating system resources on large files..

Eventually we managed to trace it to output buffering that was being started on every page via an include.. Regards :. In this very case, it is not important, but in some situation it could be harmful. This is very bad. So here's my code, hoping this will help people out there with the same problem.

In addition, the usleep will keep the CPU in check. Process aborted. As stated in the PHP manual, strlen returns the number of bytes in the string, not the character length. In PHP, a null byte in a string does NOT count as the end of the string, and any null bytes are included in the length of the string. So strlen can be used for binary data, no matter if the data is from a file or some other source.

According to PHP documentation of fread function you may use the construction using filesize as shown in the first example:. Update: to find a size of the file can be used function stat without opening or fstat on opened file. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more.

If you are the one who needs to write data to binary files, you can use additional methods to do so. Firstly, you need to open a file in one of the modes that allow writing of a file by default, files are opened in read-only mode. For this when you create an object BinaryStream specify in second argument one of the following modes:.

Fails when file already exists. Fails when file doesn't exist. After you have correctly opened the file, you can use the following methods, named by analogy with the other designed for reading. To do this, instead of using an array of boolean, in which the first element is the number of bits is used to record the number, and the second element - number. If you know an application of this package, send a message to the author to add a link here. Login Register.

All class groups. Latest entries. Top 10 charts. Recommend this page to a friend! View files Info Example View files 11 Download. PHP has functions to convert a binary stream of data into individual values, but for whole streams in a specific format, parsing data may be a complicated task. This class simplifies that process by the means of functions that read files and extract values of some expected types. It also provides means to parse groups of data that have a well known format, by using data group definitions.

Manuel Lemos. Sergey Vanyushin. Name: Sergey Vanyushin is available for providing paid consulting. Contact Sergey Vanyushin. The library supports all major data types and allows both read and write the data. As you define in your blog, I have same folllow the above steps to upload and download files using curl, but its not working anymore.

Can you define by the examples. So I can understand easily. I use your code and as you say that download popup will display on client browser, but its not showing and display only the content of file. Third, for testing, save the file to the disk, download it, and then open it to verify the file was transmitted back to you properly.

Thanks for the informative post. I get the other form data but do not get file data where i am posting my data. Give the code a try and see if you get a different result. PS: I noticed myimge. Your code looks same as mine and yetl I get different result. I am wondering if it has to do with the framework I am using. I am using Kohana 3. I am going to see if there is some issue on that front.

Please let me know if you have any experience with Kohana.