php input exceeds the end of the file

In PHP development, you may encounter some inexplicable errors. One of the more troublesome errors is "input exceeds the end of the file", which usually occurs when reading files, uploading files, and saving files.

The cause of this error is usually due to the size of the file or the size of the uploaded file exceeding the limit set in PHP.INI. There are some restrictions related to file uploads in PHP.INI. These restrictions can prevent some malicious users from uploading large files and protect the security of PHP.

At the same time, this error is sometimes caused by some errors or bugs in the PHP parsing engine.

What should I do if the "input exceeds the end of the file" error occurs? Let’s take a look at some solutions.

1. Modify the restrictions in PHP.INI

The first solution is to modify the relevant restrictions in PHP.INI, which allows PHP to accept larger files. See the modification method below:

• Open the PHP.INI file.
• Find the following parameters:

upload_max_filesize = 2M 
post_max_size = 8M 
max_execution_time = 30 

• Modify their values ​​to larger values. For example:

upload_max_filesize = 100M 
post_max_size = 100M 
max_execution_time = 300

• Save the modified PHP.INI file and restart Apache.

2. Use a third-party library to read large files

The second method is to use a third-party library to read large files. For example, when using the fgetcsv function to read a large CSV file, if the file is too large, an "input exceeds the end of the file" error may occur. At this time, you can use libraries such as Spout to read large files. Code example:

require_once('spout/src/Spout/Autoloader/autoload.php');

use Box\Spout\Reader\Common\Creator\ReaderEntityFactory;

$reader = ReaderEntityFactory::createXLSXReader();
$reader->open('large_file.xlsx');

foreach ($reader->getSheetIterator() as $sheet) {
    foreach ($sheet->getRowIterator() as $row) {
        $cells = $row->getCells();
        foreach ($cells as $cell) {
            //do something
        }
    }
}

$reader->close();

This method can avoid PHP's default reading method being too violent, and it is also more efficient for reading large files.

3. Check the PHP parsing engine

Finally, when encountering this problem, we can first write down the file path and line number of the error prompt, and then check the file Check the code in to see if there are syntax errors or logical errors that cause errors in reading the file. At the same time, we can also check whether there is a bug in the PHP parsing engine that causes this error. In this case, we can go to the PHP official website for help or wait for a solution.

Summary

"The input exceeds the end of the file" error often occurs in PHP development, usually due to the size of the file or the size of the uploaded file exceeding the limit in PHP.INI. To avoid this error, we can modify the file upload-related restrictions in the PHP.INI file, use a third-party library to read large files, or check whether there are syntax or logic errors in the code causing problems. I hope this article can help developers solve such problems.

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