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在win7下运行composer,安装asset插件时，出现SSL报错：
D:\data\www\mmoyu\symapp>composer global require "fxp/composer-asset-plugin:1.0.0"
Loading composer repositories with package information

[Composer\Downloader\TransportException]
The "https://packagist.org/packages.json" file could not be downloaded: SSL
operation failed with code 1. OpenSSL Error messages:
error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify
failed
Failed to enable crypto
failed to open stream: operation failed

install [--prefer-source] [--prefer-dist] [--dry-run] [--dev] [--no-dev] [--no-p
lugins] [--no-custom-installers] [--no-scripts] [--no-progress] [-v|vv|vvv|--ver
bose] [-o|--optimize-autoloader]

没有安装CA证书导致的！！！
CA证书下载地址：http://curl.haxx.se/docs/caextract.html
然后修改php.ini文件 增加
openssl.cafile= D:/wamp/php/verify/cacert.pem

就OK了~

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在win7下运行composer,安装asset插件时，出现ssl报错：
d:\data\www\mmoyu\symapp>composer global require "fxp/composer-asset-plugin:1.0.0"
loading composer repositories with package information

[composer\downloader\transportexception]
the "https://packagist.org/packages.json" file could not be downloaded: ssl
operation failed with code 1. openssl error messages:
error:14090086:ssl routines:ssl3_get_server_certificate:certificate verify
failed
failed to enable crypto
failed to open stream: operation failed

install [--prefer-source] [--prefer-dist] [--dry-run] [--dev] [--no-dev] [--no-p
lugins] [--no-custom-installers]...0: operation failed

install [--prefer-source] [--prefer-dist] [--dry-run] [--dev] [--no-dev] [--no-p
lugins] [--no-custom-installers] [--no-scripts] [--no-progress] [-v|vv|vvv|--ver
bose] [-o|--optimize-autoloader]

没有安装ca证书导致的: ssl
operation failed with code 1.org/packages://packagist，出现ssl报错;
loading composer repositories with package information

[composer\.ini文件 增加
openssl:1.haxx.cafile= d.se/docs/caextract;wamp/：
d:14090086！！
ca证书下载地址:ssl routines;https.org/packages,安装asset插件时:\://packagist:certificate verify
failed
failed to enable crypto
failed to open stream标签.html" target="_blank">http;php/symapp>. openssl error messages;downloader\data\:ssl3_get_server_certificate：