Encryption

It is a concept of Encoding and Decoding the data. Basically, we have two types of Encryption in PHP. Those are

One_way Encryption
Two_way Encryption

One_way Encryption:

By using this, we can encode the data but we cannot decode encoded data.

1. md5() function: (Message-Digest 5)

By using this function, we can encode the data as 32 characters length, alphanumeric string.

Syntax

Parameters

Parameter	Description	Is compulsory
String	The string to be calculated.	compulsory
raw_output	Specifies hex or binary output format: TRUE- Raw 16 character FALSE- Default.	Optional

Returns

md5() function returns the calculated md5 hash on success, or false on failure.

Example 1

<?php 
	$str = "sonoo";
	echo md5($str);
?>

Output:

Example 2

<?php
$str = "sonoo";
echo md5($str);
if (md5($str) == "ea866df636e6d5b4b7c9ab7b596cdd4c")
  	{
  		echo "<br>Hello javatpoint";
 		 exit;
 	 }
?>

Output:

Next TopicPHP Two-way Encryption

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