How to solve the problem that php7 cannot download pdf files

Solution to the problem that php7 cannot download PDF files: 1. Check the download link to ensure that the download link is valid and points to the correct file; 2. Check the permissions to confirm that the PHP script has sufficient permissions to access and download the target PDF file, and set the correct response headers "Content-Disposition" and "Content-Type"; 3. Update the browser and file, open a new browser to download the PDF file or re-upload the PDF file to the server; 4. Check whether the network is faulty, Resulting in slow download speeds.

# Operating system for this tutorial: Windows 10 system, php7 version, Dell G3 computer.

Encountered problems when using PHP7 to download PDF files, there are the following solutions:

1. Check the download link - make sure the download link is valid, and is pointing to the correct file. Sometimes the wrong link or file name may be used causing the download to fail.

2. Check permissions - Confirm that the PHP script has sufficient permissions to access and download the target PDF file. Make sure you can read the file on the server and transfer it to the user's computer, and make sure the code sets the correct response headers "Content-Disposition", "Content-Type"

3. Update the browser and file - Another possibility is that the website browser has not updated properly, or there is an issue with the PDF file itself. We recommend trying to download the PDF file from another browser, or re-uploading the PDF file to the server.

4. Check the network connection - Finally, make sure your network connection is stable and there are no issues. Network issues may cause slow or failed downloads, which may also affect your downloads.

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