我在使用 laravel 时遇到了 Undefined offset: 0
错误。奇怪的是,当我 dd()
它时,它出现了。
$ports = $container->getPorts();
$ports = $ports[0];
这将返回 Undefined offset: 0
当我 dd()
$ports = $container->getPorts();
dd($ports[0]);
Port {#336
#privatePort: 80
#publicPort: 32780
#type: "tcp"
}
完整数组:
array:1 [▼
0 => Port {#336 ▼
#privatePort: 80
#publicPort: 32780
#type: "tcp"
}
]
我在使用 docker-php SDK 时遇到了这个错误。任何人都知道发生了什么事?
完整代码:
public function dockerContainers()
{
$docker = new \Docker\Docker();
$containerManager = $docker->getContainerManager();
$containers = $containerManager->findAll();
$data = [];
$x=0;
foreach ($containers as $container) {
$ports = $container->getPorts();
// dd($ports[0]);
$ports = $ports[0];
$privatePort = $ports->getPrivatePort();
$publicPort = $ports->getPublicPort();
$data[$x++] = [
'id' => $container->getId(),
'state' => $container->getState(),
'names' => $container->getNames(),
'image' => $container->getImage(),
'status' => $container->getStatus(),
'ports' => [
'privatePort' => $privatePort,
'publicPort' => $publicPort
]
];
}
return view('containers', [ 'containers' => $data ]);
}
最佳答案
这是因为您的一个容器
没有端口
,最好使用laravel collect()使您的数组成为集合对象的方法,然后您可以使用可用的集合方法。
试试下面的代码...
foreach ($containers as $container) {
//getting ports and making laravel collection object
$ports = collect($container->getPorts());
if($ports->first()){
$ports = $ports->first();
$privatePort = $ports->getPrivatePort();
$publicPort = $ports->getPublicPort();
$data[$x++] = [
'id' => $container->getId(),
'state' => $container->getState(),
'names' => $container->getNames(),
'image' => $container->getImage(),
'status' => $container->getStatus(),
'ports' => [
'privatePort' => $privatePort,
'publicPort' => $publicPort
]
];
}
}
关于PHP: undefined offset :0,但不是 dd(),我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/46676773/