Summary of php compression and archiving extensions php extension mongo php extension directory php extension pthread

Summary of PHP compression and archiving extension

Open the PHP manual, we can see that there are the following function libraries for processing compressed files,

Bzip2, LZF, Phar, Rar, Zip, Zlib

So what are the practical application scenarios of each type? Let’s take a look at it together.

Bzip2:

The official introduction is as follows:

The bzip2 function is used to transparently read and write bzip2 (.bz2) compressed files.

My own understanding is as follows:

This function library is to process files with .bz2 extension. This compression format is a commonly used compression format under Linux. Of course, it can also be used under Windows. . The specific operations are nothing more than compressing, decompressing, opening, writing, reading, closing and other operations on files. For specific usage of the function, please write your own test case.

LZF:

The official introduction is as follows:

LZF is a very fast compression algorithm, ideal for saving space with only slight speed cost. It can be optimized for speed or space at the time of compilation. It takes very little time to achieve the ideal space-saving effect. It can be used to optimize for speed or space at compile time.

You can use the compression function in this function library to compress a string and return the compressed string. You can also decompress the string compressed with this algorithm using the Function decompression.

Phar:
It is understood here that with this extension, multiple php files can be packaged into a php archive (.phar) document. And individual files inside can be used directly. You can also convert between tar zip phar three file formats.

Rar :This extension only gives methods to read Rar files. Cannot write.

Zip:
This extension allows you to transparently read and write ZIP archives and the files inside them.

Zlib:

This module allows you to transparently read and write gzip (.gz) compressed files

The above has introduced a summary of PHP compression and archiving extensions, including PHP and extension content. I hope it will be helpful to friends who are interested in PHP tutorials.