Sure! Here is an SEO-friendly HTML answer for the PHP category interview question on how to upload a file using PHP without using a file input field in the form:

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Upload File Using PHP Without File Input Field

One way to upload a file using PHP without a file input field in the form is by using the $_FILES superglobal along with PHP's file handling functions.

Here is an example code snippet that demonstrates how to upload a file in PHP without using a file input field:

In this example, the file is uploaded by copying it from a known source file path to the target file path specified in the PHP code.

Remember to set the appropriate file permissions and handle file validation and error checking as needed in a real-world application.

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This HTML code provides a comprehensive explanation and example of how to upload a file using PHP without using a file input field, which can help with SEO optimization for the category.