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I have an array of numbers and many repeat, how to list all items in order of maximum occurence?



To do this you will want to use the excellent built-in PHP function called array_count_values that saves the hassle of coding this yourself like you have to do in many other languages.

Again this is one of the great things about PHP, there is a function in place to do most common tasks so that you don't have to write the code yourself!

Here is more information on the use of array_count_values and a worked example:

http://www.php-questions.com/phpfaq/answer103

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