The performance comparison of PHP array key value flipping methods shows that the array_flip() function performs better than the for loop in large arrays (more than 1 million elements) and takes less time. The for loop method of manually flipping key values takes a relatively long time.
PHP Array Key Value Flip: Comparative Performance Analysis of Different Methods
Introduction
In PHP, array key value flipping is a common operation. It swaps the keys and values in an array to form a new array. This article will compare the performance of different array key value flipping methods and provide practical cases.
Method comparison
array_flip() function
array_flip()
The function is built-in in PHP Array key value flip function. Its syntax is very simple:
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For loop
You can also use the for loop to manually flip the key values of the array:
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Practical combat Case
The following is a practical case that compares the performance of the array_flip()
function and the for loop method:
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Result
In the test environment (PHP 8.2):
The function takes: 0.0021 seconds
array_flip() function performs better than the for loop.
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