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The simplest sorting method: 1. Store the three numbers that need to be sorted into an empty array; 2. Directly use the built-in array sorting functions sort(), rsort(), asort(), ksort( ), arsort(), and krsort() can sort the array elements according to certain rules.
The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer
Give three numbers in php The simplest way to sort is to use the array sorting function.
Save the three numbers to be sorted into an empty array
Use the built-in array sorting function sort(), rsort(), asort(), ksort(), arsort(), krsort() sorts array elements according to certain rules
Example:For a set of data Sort 10, 23, 5, 12, 84, 16
1. Store it in the array:
$arr = array(10, 23, 5, 12, 84, 16);
2. Sort in ascending order
sort(): Sort the array elements in ascending order
asort(): Sort the array in ascending order according to the key value of the associated array
ksort(): Sort the array in ascending order according to the key name of the associated array
<?php $arr = array(10, 23, 5); var_dump($arr); sort($arr); var_dump($arr); ?>
3. Sort in descending order
rsort(): Sort the array elements in descending order
arsort(): Sort the array in descending order according to the key value of the associated array
krsort(): Sort the array in descending order according to the key name of the associated array
<?php $arr = array(5, 16, 29, 15); var_dump($arr); rsort($arr); var_dump($arr); ?>
Recommended learning: "PHP Video tutorial》、《PHP ARRAY》
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