Php Randomize Array (Shuffle)

by Mr Me on September 27, 2007 in php

images

If you want to randomize a php array , you can use shuffle function.

But we can’t randomize the whole array with its value, it might be integer, string or collection of objects etc. So we randomize or shuffle the keys of the array.

Eg:

$Keys = array_keys($MyArray);
shuffle($Keys);

$NewArray = array(); //declare a new array
foreach( $Keys as $key)

{

$NewArray[] = $MyArray[$key];

}

Here the NewArray will be the shuffle of MyArray

Thanks

Sajith.M.R

2 Comments

2 Responses to “Php Randomize Array (Shuffle)”

Erkman December 5, 2008 at 1:25 am #

It doesn’t work. It shuffles the keys, but some keys have been lost after shuffling. Bad tip…

Reply
Pavel February 26, 2009 at 6:17 pm #

No code is right. it’s works. Erkman makes something wrong.
BUT IT IS NOT RANDOMIZE…

Reply

About the author

Specialising in PHP, MVC, Agile, LAMP and iPhone Application Development, Sajith has over 5 years experience in the web programming industry during which time he has had his work featured in high profile lists on sites like Mashable. He was a talented and efficient member of the Cyber-Duck programming team, working alongside some of the best in the industry. Co-Founder of MobMe Wireless Pvt Limited, Sajith also has considerable experience in successful business management, having helped to excel the company to become listed as one of the "10 startups to watch in 2008" by the Wall Street Journal and by NASSCOM as one of the "100 most innovative companies in India", joining others like Texas Instruments, Tata Consultancy Services, Satyam and IBM. This technical blog is started three years before which now receives more than 120,000 visits each month and has more than 4000 subscribers.