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This article will explain in detail what is the use of the md5 () function in php. The editor thinks it is very practical, so I share it with you as a reference. I hope you can get something after reading this article.

In PHP, the md5 () function converts the value to a calculated MD5 hash, which is used to calculate the MD5 hash of the string, and if the function fails, the result is false with the syntax "md5 (the string to be evaluated, hexadecimal or binary output format)".

This article operating environment: Windows10 system, PHP7.1 version, Dell G3 computer.

Md5 in php

The md5 () function calculates the MD5 hash of a string.

The md5 () function uses RSA data security, including the MD5 message digest algorithm.

The syntax is as follows:

Md5 (string,raw)

The parameters are as follows:

String is required. Specifies the string to be calculated.

Raw is optional. Specify the hexadecimal or binary output format:

TRUE-original 16 character binary format

FALSE-default. 32 character hexadecimal number

The result returned is:

Returns the calculated MD5 hash if successful, and FALSE if failed.

Examples are as follows:

Output result:

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