Using PHP's natsort() Function for Natural Order Array Sorting
This article explains PHP's natsort() function, which performs natural order sorting on arrays while preserving key/value associations, describes its parameters and return values, and provides a complete example comparing standard sorting with natural sorting to illustrate the differences in output.
The natsort() function in PHP sorts an array using a natural order algorithm that mimics the way humans sort alphanumeric strings, while keeping the original keys associated with their values.
Parameters : It accepts a single argument passed by reference – the array to be sorted.
Return value : The function returns TRUE on success and FALSE on failure.
Example :
Output :
Standard sorting
Array
(
[3] => img1.png
[1] => img10.png
[0] => img12.png
[2] => img2.png
)
Natural order sorting
Array
(
[3] => img1.png
[2] => img2.png
[1] => img10.png
[0] => img12.png
)The example demonstrates that standard sorting orders the strings lexicographically ("img1", "img10", "img12", "img2"), whereas natural sorting orders them as a human would expect ("img1", "img2", "img10", "img12").
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