How to Retrieve the Response Body in Guzzle 6?

Retrieving the Body of a Response in Guzzle 6

Guzzle 6, a popular HTTP client library for PHP, utilizes the PSR-7 standard which mandates the use of streams to store the body of a message. To retrieve this body as a string, utilize one of the following methods:

String Casting Operator

$contents = (string) $response->getBody();

Using getContents()

$contents = $response->getBody()->getContents();

Key Difference:

• getContents() returns the remaining contents of the stream, meaning a subsequent call will return an empty string unless the stream position is reset using rewind or seek.
• Casting to a string will read all data from the stream, regardless of previous operations.

For example:

$stream = $response->getBody();
$contents = $stream->getContents(); // returns all contents
$contents = $stream->getContents(); // empty string
$stream->rewind();  // reset stream position
$contents = $stream->getContents();  // returns all contents again

In contrast:

$contents = (string) $response->getBody(); // returns all contents
$contents = (string) $response->getBody(); // returns all contents again

For more details, refer to the Guzzle documentation: http://docs.guzzlephp.org/en/latest/psr7.html#responses

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