Difference between File Type and Size
Checking File Type | Checking File Size |
---|---|
Verify file extensions or MIME types against a predefined list | Compare the file size against the maximum allowed size |
Use functions like pathinfo() or MIME type detection to determine file type |
Access file size information using $_FILES superglobal array |
Prevents uploading of disallowed file types | Prevents uploading of excessively large files |
How to check the Type and Size before File Uploading in PHP ?
In PHP, it’s essential to validate file types and sizes before allowing users to upload files to a server. This helps prevent potential security vulnerabilities and ensures that only allowed file types and sizes are accepted. PHP provides various methods to perform these validations, including checking file extensions, MIME types, and file sizes.
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