[php] Cannot find autoconf. Please check your autoconf installation and the $PHP_AUTOCONF environme

問題 在 centos 中，對 php 擴展進行編譯安裝時，出現下面的提示 Cannot find autoconf. Please check your autoconf installation and the $PHP_AUTOCONF environment variable. Then, rerun this script.php 解決方法：web yum install autocon

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