我想在我的docker容器中显示一个env var.
PHP脚本如下所示:
<html>
<head>
<title>Show Use of environment variables</title>
</head>
<body>
<?php
print "env is: ".$_ENV["USER"]."\n";
?>
</body>
</html>
我使用OpenShift启动容器. PHP – 容器显示:
env is:
现在我更改了容器的dc配置:
oc env dc/envar USER=Pieter
deploymentconfig "envar" updated
当我访问容器时. USER的env var是Pieter
docker exec -it 44a0f446ae36 bash
bash-4.2$echo $USER
Pieter
但我的脚本仍然显示:“env是:”它没有填写变量.
最佳答案 更改
print "env is: ".$_ENV["USER"]."\n";
至
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>
/ #