Function name: stream_bucket_make_writeable()
Applicable version: PHP 5 >= 5.1.0, PHP 7
Function description: The stream_bucket_make_writeable() function marks the given stream bucket as writable, so that data can be read from the bucket.
Usage: stream_bucket_make_writeable(resource $brigade): bool
parameter:
Return value: Return true if successful, otherwise return false.
Example:
data; // Output: Hello, world! } else { echo "Failed to make bucket writeable."; } ?>In the above example, first use the stream_bucket_new() function to create a stream bucket and set its contents to "Hello, world!". Then use the stream_bucket_make_writeable() function to mark the bucket as writable. Finally, by accessing the $bucket->data property, we can read the data in the bucket and output it. If the stream_bucket_make_writeable() function executes successfully, it will return true, otherwise it will return false.