How php converts relative paths to absolute paths

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In PHP, you can use the realpath () function to convert a relative path to an absolute path, which returns an absolute path. This function removes all symbolic links and returns an absolute path name. On failure, the result is FALSE, and the syntax is "realpath".

This article operating environment: Windows10 system, PHP7.1 version, Dell G3 computer

How to convert relative path to absolute path by php

The realpath () function returns the absolute path.

This function removes all symbolic links (such as'/. /','/.. / 'and extra' /') and returns absolute pathnames.

If it fails, the function returns FALSE.

Grammar

Realpath (path)

Path is required. Specify the path to be checked.

Examples are as follows:

Output result:

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