PHP-docker容器中的环境变量 [英] Environment variable in PHP-docker container
本文介绍了PHP-docker容器中的环境变量的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我想在我的docker容器中显示一个env var. PHP脚本如下所示:
I want to show an env var in my docker container. The PHP script looks like this:
<html>
<head>
<title>Show Use of environment variables</title>
</head>
<body>
<?php
print "env is: ".$_ENV["USER"]."\n";
?>
</body>
</html>
我使用OpenShift启动容器. PHP-容器显示:
I use OpenShift to start the container. The PHP - container shows:
env is:
现在，我更改容器的直流配置:
Now I change the dc config of my container:
oc env dc/envar USER=Pieter
deploymentconfig "envar" updated
当我访问容器时. USER的环境变量是Pieter
When I access the container. The env var of USER is Pieter
docker exec -it 44a0f446ae36 bash
bash-4.2$ echo $USER
Pieter
但是我的脚本仍然显示:"env is:"它没有填写变量.
But my script remains showing: "env is:" It does not fill in the variable.
推荐答案
更改
print "env is: ".$_ENV["USER"]."\n";
到
print "env is: ".getenv("USER")."\n";
.
/# cat test.php
<html>
<head>
<title>Show Use of environment variables</title>
</head>
<body>
<?php
print "env via \$_ENV is: ".$_ENV["USER"]."\n";
print "env via getenv is: ".getenv("USER")."\n";
?>
</body>
</html>
/ #
/ # export USER=Sascha
/ # echo $USER
Sascha
/ # php test.php
<html>
<head>
<title>Show Use of environment variables</title>
</head>
<body>
PHP Notice: Array to string conversion in /test.php on line 7
PHP Notice: Undefined index: USER in /test.php on line 7
env via $_ENV is:
env via getenv is: Sascha
</body>
</html>
/ #
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