PHP upload files using Azure Storage Blob

This article mainly introduces PHP's use of Azure Storage Blob to upload files. It has certain reference value. Now I share it with you. Friends in need can refer to it.

Preface

Distribution When it comes to a project, a small website that requires content management, the front-end page display and special effects are completed by front-end colleagues. I am responsible for building the content management backend and providing data interfaces. This project requires the management side to be able to upload videos, but the server bandwidth provided by Party A is very small, and there are other projects running in parallel on the same server.
In order to prevent the subsequent impact of sudden upgrades, the team leader suggested that I learn to use Azure Storage Blob and be ready for upgrades at any time.

PHP version restrictions

I found the official sdk in Github.

Minimum Requirements

PHP 5.6 or above

Since the locally configured PHP environment is 5.5.12, and the sdk requires The minimum PHP version is 5.6, composer blocked the update
So use composer update --ignore-platform-reqs to bypass the requirement monitoring and force the upgrade.
However, if const is set to an array in the classBlobResources.php, an error will be reported in 5.5

Fatal error: Arrays are not allowed in class constants in E:\webroot\tp5cms\vendor\microsoft\azure-storage-blob\src\Blob\Internal\BlobResources.php on line 103

There is no choice but to upgrade PHP.

Upgrade WAMP 2.5-3.1

For development needs, we decided to upgrade wampserver to the latest version.
There is a trick to upgrading wamp: you cannot directly overwrite the installation. You must first remove the old version and then install the new version.
Read the upgrade tips carefully.
To summarize, what needs to be done is probably the following two things:

• Remove the service

  Start WampServer
  [Important] Log in to MySQL backup All database data
  wampmanager -> Stop all Services
  wampmanager -> MySQL -> Service -> Remove service Remove MySQL service
  wampmanager -> Apache -> Service -> Remove service Remove the Apache service
  stop wampmanager
  Right-click wampmanager -> Exit

• Rename the folder

  Rename wamp Name it another name for backup

Install the storage emulator

Since there is no azure account for testing in the company, fortunately azure has one for testing and development Storage emulator. Windows systems can be downloaded and installed directly, and Linux systems can use the open source storage emulator Azurite.

1. Download the simulator, here is the download link.

2. After the installation is complete, run StartStorageEmulator.cmd and find that you need to install SQL Server Express Local DB. There is a download link here. Select Express Edition, then select LocalDB to download and install.

3. Run cmd again and found the error

C:\Program Files (x86)\Microsoft SDKs\Azure\Storage Emulator>AzureStorageEmulato
r.exe start
Windows Azure Storage Emulator 5.3.0.0 command line tool
 
未经处理的异常: System.TimeoutException: Unable to open wait handle.
在 Microsoft.WindowsAzure.Storage.Emulator.Controller.EmulatorProcessControll
er.InternalWaitForStorageEmulator(Int32 timeoutInMilliseconds)
在 Microsoft.WindowsAzure.Storage.Emulator.Controller.EmulatorProcessControll
er.EnsureRunning(Int32 timeoutInMilliseconds)
在 Microsoft.WindowsAzure.Storage.Emulator.Commands.StartCommand.RunCommand()
 
在 Microsoft.WindowsAzure.Storage.Emulator.Program.Main(String[] args)

After querying, I found that this was because a process occupied port 10000.

#运行：>C:\Users\Walter>netstat -p tcp -ano | findstr :10000> TCP 127.0.0.1:10000 0.0.0.0:0 LISTENING 2664
 #根据PID 2664查询对应的进程>C:\Users\Walter>tasklist | findstr "2664">YunDetectService.exe 2664 Console 1 9,944 K
 
#只是一个不重要的进程，去掉后继续开发>C:\Users\Walter>taskkill /pid 2664 /f>成功: 已终止 PID 为 2664 的进程。
 
#以下是模拟器成功运行的范例>C:\Program Files (x86)\Microsoft SDKs\Azure\Storage Emulator>AzureStorageEmulator.exe start
Windows Azure Storage Emulator 5.3.0.0 command line tool
The storage emulator was successfully started. 
>C:\Program Files (x86)\Microsoft SDKs\Azure\Storage Emulator>AzureStorageEmulator.exe status
Windows Azure Storage Emulator 5.3.0.0 command line tool
IsRunning: True
BlobEndpoint: http://127.0.0.1:10000/QueueEndpoint: http://127.0.0.1:10001/TableEndpoint: http://127.0.0.1:10002/

Start development

You can try adding container, blob and deletion functions through official examples.
After successfully uploading the blob, the resources in the storage simulator cannot be addressed.
eg. The account name used is devstoreaccount1, the created container name is mycontainerudfpbk, and the blob name is 5ac1a5c82021d.png.
According to the rules in the document, the resource address should be
http://127.0.0.1:10000/devstoreaccount1/mycontainerudfpbk/5ac1a5c82021d.png
but the returned data has always been

<Error>
　　<Code>ResourceNotFound</Code>
　　<Message>　　　　The specified resource does not exist. RequestId:9d2d1b08-12b1-4feb-8636-4325eb71b838 Time:2018-04-08T09:14:14.3007800Z
　　</Message>
</Error>

After reading related articles, I found that when creating a container, if the access permissions (container-level access policies) are not set, external access is prohibited by default.

ACL (PublicAccessType) permissions are divided into three levels: CONTAINER_AND_BLOBS, BLOBS_ONLY, NONE, the default is NONE.
If the resource needs to be accessible externally, set it to BLOBS_ONLY.
Attach your own encapsulated azure auxiliary class

I also encountered a small problem. When setting permissions, ACLBase reported an error
Static function MicrosoftAzure\Storage\Common\ Internal\ACLBase::createAccessPolicy() should not be abstract
After querying, it was found that abstract and static are not allowed to be used in methods at the same time after PHP5.2.

#只要将ACLBase中的abstract protected static function createAccessPolicy();abstract protected static function validateResourceType($resourceType);#改为protected static function createAccessPolicy(){}protected static function validateResourceType($resourceType){}#即可

Summary

Three ways to terminate the process

1. Use pid to end the process
   taskkill / pid PID /f

2. Use pid to end the process
   ntsd -c q -p PID

3. Use Process name End process
   ntsd -c q -pn NAME.exe

Address

1. Officially provided sdk Address

2. Self-use auxiliary class address

Note: Please clarify the role of this process before forcing the end

The above is the purpose of this article All content, I hope it will be helpful to everyone's learning. For more related content, please pay attention to the PHP Chinese website!

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