What is the skill of decompressing bit string with PHP unpack function?

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We have introduced the specific use of PHP pack to our friends, and most of our friends also know that this function is used to compress bit strings, so is there a function to decompress bit strings? Today we will explain in detail the use of PHP unpack function.

PHP unpack function definition

Decompress bit string data.

Syntax:

string pack(string format, mixed [args]...);

Return value:

array

PHP unpack function types:

data processing

PHP unpack function content description

This function is used to extract data from a string of bits. This function has exactly the same functionality as Perl's function of the same name. Parameter format is compressed format.

PHP unpack function example 1

< ?php $data = "PHP"; print_r(unpack("C*",$data)); ?>

Output:

Array

(

[1] => 80

[2] => 72

[3] => 80

)

The above is what PHP unpack function decompresses bit string implementation skills, Xiaobian believes that some knowledge points may be what we will see or use in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.