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In my site host, I have seen (via phpinfo) that
This led me to think that I should be able to upload as file as big as 16Mb. However, when I do this through a post method (as normal), post_max_size takes over and declares that I sent too much.
What is the method which permits sending a file as big as 16Mb ? GET - PUT - other ?
Hope someone can clarify this for me.
Simon
624
upload_max_filesize is the maximum size of an uploaded file. This is the limit for a SINGLE file. post_max_size, on the other hand, is the limit of the entire body of the request (which may include multiple files as well as other stuff).
To increaes file upload size in PHP, you need to modify the upload_max_filesize and post_max_size variable's in your php. ini file. In addition, you can also set the maximum number of files allowed to be uploaded simultaneously, in a single request, using the max_file_uploads .
upload_max_filesize is the limit of any single file. post_max_size is the limit of the entire body of the request, which could include multiple files.
Given post_max_size = 20M and upload_max_filesize = 6M you could upload up to 3 files of 6M each. If instead post_max_size = 6M and upload_max_filesize = 20M then you could only upload one 6M file before hitting post_max_size. It doesn't help to have upload_max_size > post_max_size.
It's not obvious how to recognize going over post_max_size. $_POST and $_FILES will be empty, but $_SERVER['CONTENT_LENGTH'] will be > 0. If the client just didn't upload any post variables or files, then $_SERVER['CONTENT_LENGTH'] will be 0.
197
By POST file uploads are done (commonly, there are also other methods). Look into the method attribute of the form which contains the file-upload field ;)
The lowest limit of any related setting supersedes a higher setting:
See Handling file uploads: Common Pitfals which explains this in detail and how to calculate the values.
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