Uploading files over SFTP using PHP

Transferring files over FTP using PHP is easily done using various PHP functions and cURL. However transferring files over SFTP raises various problems and is not easily supported via PHP and cURL. phpseclib provides a nice library wrapper that enables easy access to the sftp protocol and various cryptography functions. phpseclib is designed to be fully interoperable with OpenSSL and other standardized cryptography programs and protocols.
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