Why is `explode()` returning an array when retrieving file extensions in PHP?

Retrieving File Extensions in PHP

When working with file uploads, it is often necessary to obtain the file extension, which indicates the type of file being processed. The question arises as to why an array is returned when using the explode() function to extract the file extension.

To resolve this issue, it is recommended to utilize the pathinfo() function, which is specifically designed for extracting file-related information. The following code demonstrates how to use pathinfo() to obtain the file extension:

$path = $_FILES['image']['name'];
$ext = pathinfo($path, PATHINFO_EXTENSION);

Using pathinfo(), the resulting variable $ext will contain the file extension without the need for manual string manipulation or the use of additional array functions. This provides a clear and concise method for obtaining file extensions in PHP.

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