Detailed explanation of how to use the readfile() function to modify the file upload size setting in PHP

If the file upload is too large, an error will occur. This article mainly introduces php readfile() to modify the file upload size setting. If you are interested, you can learn about

The compressed package generated using PHP ZipArchive, small You can download the compressed package. Today I encountered a 404 error when it was over 150M. The first thing that came to mind was that the file size exceeded the default setting of PHP. There are two ways to modify it:

php.ini ：memory_limit

memory_limit sets the memory limit. If you use readfile() to read a file, it will be related to this. Just modify this value and save it, then restart php-fpm.

php Download file size setting PHP

memory_limit = 128M

Finally remember: service php-fpm restart

ini_set

PHP ini_set is used to set the value of php.ini, which takes effect when the function is executed. Then we can directly use it to modify the memory execution size. If some friends use virtual space, this function is a savior. .

PHP Set php.ini value PHP

ini_set('memory_limit', '512M');

Full example:

PHP

set_time_limit(0);
ini_set('memory_limit', '512M');
header("Cache-Control: public");
header("Content-Description: File Transfer");
header('Content-disposition: attachment; filename=' . basename($zipfile));
header("Content-Type: application/zip");
header("Content-Transfer-Encoding: binary");
header('Content-Length: ' . filesize($zipfile));
ob_clean();
flush();
@readfile($zipfile);
unlink($zipfile);

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