* ##安裝擴展錯誤原因及說明： > composer 安裝是每個包五分鐘超時的。所以請注意了 > * composer install把安裝依賴的時間也算進包安裝時間了，遇到依賴多的，網絡差的，就會出錯了。還得重新弄。 > * 如果用composer require，則會把要依賴的包分開下載，這樣就會減少很多錯誤 * ##安裝錯誤： 一般有以下錯誤。 * php未開啟openssl擴展 * 未安裝CA證書 **錯誤詳情**  ~~~ PHP Warning: no valid certs found cafile stream: `E:\develop\phpStudy\cert\cacert.pem' in Command line code on line 1 Warning: no valid certs found cafile stream: `E:\develop\phpStudy\cert\cacert.pem' in Command line code on line 1 PHP Warning: copy(): Failed to enable crypto in Command line code on line 1 Warning: copy(): Failed to enable crypto in Command line code on line 1 PHP Warning: copy(https://getcomposer.org/installer): failed to open stream: operation failed in Command line code on line 1 Warning: copy(https://getcomposer.org/installer): failed to open stream: operation failed in Command line code on line ~~~ **解決辦法：** 先下載：CA證書下載地址：http://curl.haxx.se/docs/caextract.html 修改php.ini配置，開啟openssl擴展 ~~~ ;開啟openssl擴展 extension=php_openssl.dll ;配置ca證書地址 openssl.cafile= E:\develop\phpStudy\cert\cacert.pem ~~~ * ##找不到包