In PHP, we often need to process large amounts of data, including reading and writing files, network transmission, etc. Sometimes, we hope to compress this data to reduce storage space and network bandwidth usage. PHP provides a convenient way to implement data compression, that is, using streams to compress and decompress data.
Stream is an abstract data concept that can be used to represent the flow of data. In PHP, we can use streams to process files, network transfers, and other data sources. A stream can be read-only, writable, or both. Using streams for data compression, we can achieve efficient transmission and storage of data by compressing or decompressing the data during the process of reading or writing data.
In PHP, we can use the Zlib extension to implement data compression and decompression operations. The Zlib extension is a built-in compression library that provides support for data compression and decompression. Here is a sample code that uses streams for data compression:
<?php
// 待压缩的数据
$data = "这是待压缩的数据，可以是文本、二进制数据等。";
// 创建压缩流
$stream =