PHP Password Generator

Note: This post is over two years old and so the information contained here might be out of date. If you do spot something please leave a comment and we will endeavour to correct.

8th March 2008 - 2 minutes read time

Here is a very simple function that will generate a string of random characters, ideal if you want to create a password for a new user.

function generatePassword($length=10)
{
 $pass = '';
 $parts = array_merge(range(0, 9),range('a', 'z'),range('A', 'Z'));	
 for ($i=0; strlen($pass) <= $length; $i++) {
  $pass .= $parts[array_rand($parts)];
 }
 return $pass;
}

Use the function like this.

echo generatePassword();

To create a longer password string just pass a parameter with the function.

echo generatePassword(5);

PHP

Comments

I have generated a very similar Password generator. It works really well and get quite a few hits towards it as well.

Submitted by Password Generator on Thu, 06/02/2011 - 10:46

Permalink

Add new comment

Related Content

Protecting A Page From Being Directly Accessed With PHP

27th April 2025

I was thinking recently about the number of ways in which I could restrict access to a page using PHP.

The obvious option is to create a user authentication system, but in some situations that is overkill for what is required. If you just want to prevent users from going directly to a certain page then there are a few options open to you.

Generating Colour Palettes From Images In PHP

4th August 2024

A common web design pattern is to incorporate an image into the design of the page. This creates a tighter integration with the image and the rest of the page.

The main issue in designing a page around the image is that the colours of the page must match the image. Otherwise this creates a dissonance between the image and the styles of the site.

Validating XML Files With XML Schema Definitions In PHP

21st July 2024

XML is a useful format for configuration, data storage, and transmitting data from one system to another. As a human readable format that can be easily read by machines it quickly gained favor in lots of different systems as a mechanism for data storage.

Creating A Character Bitmap In PHP

23rd June 2024

I was watching a video from NDC by Dylan Beattie the other day on The Story of Typography and a particular section stood out to me.

Approximating Pi Using A Circle And A Square

26th May 2024

Pi day was a few weeks ago, but I came across this simple approximation of pi recently and decided to put together an example in PHP since it seemed pretty simple.

This approximation of pi centers around a real world example, but we can simulate this using some code.

Drawing A Parabolic Curve With Straight Lines In PHP

12th May 2024

A parabolic curve is a type of curve where every point is an equal distance from a focal point. There a number of different way to generate this sort of curve using math, but one of the simplest is to use straight lines to create the illusion of the curve.