How can PHP be used to generate random passwords for user registration?

To generate random passwords for user registration in PHP, you can use the `str_shuffle` function to shuffle a string of characters that you define as the pool of characters to choose from. You can then use the `substr` function to select a specific length of characters from the shuffled string to create the random password. 

// Define the pool of characters to choose from
$characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!@#$%^&*()_+';

// Generate a random password of length 8
$password = substr(str_shuffle($characters), 0, 8);

// Output the random password
echo $password;

Keywords

PHP random passwords user registration password generation security.

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