(PECL ssh2 >= 0.9.0)
ssh2_sftp_realpath — Resolve the realpath of a provided path string
ssh2_sftp_realpath ( resource $sftp , string $filename ) : string
Translates filename
into the effective real path on the remote filesystem.
sftp
An SSH2 SFTP resource opened by ssh2_sftp().
filename
Returns the real path as a string.
Example #1 Resolving a pathname
<?php $connection = ssh2_connect('shell.example.com', 22); ssh2_auth_password($connection, 'username', 'password'); $sftp = ssh2_sftp($connection); $realpath = ssh2_sftp_realpath($sftp, '/home/username/../../../..//./usr/../etc/passwd'); /* $realpath is now: '/etc/passwd' */ ?>
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https://www.php.net/manual/en/function.ssh2-sftp-realpath.php