How to Sort a String in PHP

How to sort a string in PHP. Is there any inbuilt function available in PHP to sort string directly. PHP does not provide any inbuilt function to sort a string directly.
In this post, I’ll show you some of the methods through which we can perform sorting on a string.

How to Sort a String in PHP

Method 1 : Convert String into an Array and Perform Sorting

In this method first, we convert a string into an array. After that, we sort the array and implode them to make a string.


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Method 2 : Swap the Position of a String

In this method, We use recursive approach to sort a string using swapping the position of a character.

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Method 3: Sort string using QuickSort Algorithm

In this method we use quicksort  algorithm to sort a string in-place.


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  • LuK

    Would be interesting to do some benchmarks with all 3 approaches =), which is the fastest?

  • Роман Онищенко

    Ok, it’s good, method 1 for me!