Install libssh2 extension for php

First I installed it using brew:

andy@AndyMacBookPro:~brew sea rchssh2libss h2p hp53?ssh2php54?s sh2 php55?ssh2php 56?s sh2andy@And yMa cBookPro:

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The above introduces the installation of libssh2 extension for PHP, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.