How to use PHP for MD5 encryption?

To encrypt with MD5 using PHP, you can utilize the built-in function md5().

Here is a simple example:

<?php
$password = "123456";
$encryptedPassword = md5($password);

echo "原始密码：".$password."\n";
echo "加密后的密码：".$encryptedPassword;
?>

Output results:

原始密码：123456
加密后的密码：e10adc3949ba59abbe56e057f20f883e

In the example above, we passed the original password “123456” as a parameter to the md5() function, which will return the encrypted password.

Please note that MD5 encryption is irreversible, which means it is not possible to recover the original password from the encrypted form. Therefore, using MD5 encryption to store sensitive information like passwords is not secure, and it is recommended to use stronger encryption algorithms like bcrypt or Argon2.