Check if blob exists in Azure - php

Question

I'm wondering if there is a way to check if a blob exists in a container?
$blob = $blobRestProxy->getBlob("mycontainer", "myblobname");
if($blob){
return 'exists';
} else {
return 'not exists';
}
I've tried this but im getting this message whenever the blob does not exists:
BlobNotFoundThe specified blob does not exist.
If exists, the code returns 'exists' naturally. I'm not interested in listing all blobs in the container and iterating until I find a match cause I have a lot of blobs.

Answer 1

When the blob does not exist, the function getBlob will raise a ServiceException exception and exit the PHP progress, the following code will not work.
Please try to add the try catch statement in your code, E.G.
try {
$blob = $tableRestProxy->getBlob("mycontainer", "myblobname");
return 'exists';
} catch (ServiceException $e) {
return 'not exists';
}

Answer 2

so:
$exists = $storageClient->blobExists(<container name>, <blob name>);
Should give you what you're after.

Answer 3

Though older post, below is azure java client sample code, in case if it helps.
//getting the info from external configuration
String accountName = getStorageAccountName();
String accessKey = getAccessKey();
String container = getContainerName();
//create connection string
String connString = String.format("DefaultEndpointsProtocol=http;AccountName=%s;AccountKey=%s;EndpointSuffix=core.windows.net",accountName,accessKey);
// create account
CloudStorageAccount account= CloudStorageAccount.parse(connString );
// create client
CloudBlobClient blobClient = account.createCloudBlobClient();
// create container
CloudBlobContainer container = blobClient.getContainerReference(container);
// fetch item from list
Iterable<ListBlobItem> blobItems = container.listBlobs();
blobItems .forEach(item -> {
if (item instanceof CloudBlockBlob){
//additional condition can be added to check leased
// need to check if the blob item exists first
if((CloudBlockBlob) blobItem).exists()){
//custom business logic
}
// to check container exists and perform logic use below
// ((CloudBlobContainer) item.getContainer()).exists
}
});