# 已知三个升序整数数组_PHP程序按升序和降序对整数数组进行排序

Given an integer array and we have to sort them in ascending and descending order in PHP.

Methods to sort an array

In PHP, there are two methods which are used to sort an array,

1. sort() – It is used to sort an array in ascending order.

sort() –用于按升序对数组进行排序。

2. rsort() – It is used to sort an array in descending order.

rsort() –用于按降序对数组进行排序。

PHP code for sorting array in ascending order

``````<?php
//declaring & initializing array of integers
\$array = array(10, 80, 100, 11, 22, 21, 19, 10, 88, 89);

//sorting array in ascending order
sort (\$array);

//printing array elements after sorting
foreach( \$array as \$num ){

echo \$num."\n";
}
?>
```
```

Output

``````10
10
11
19
21
22
80
88
89
100
```
```

PHP code for sorting array in descending order

PHP代码以降序对数组进行排序

``````<?php
//declaring & initializing array of integers
\$array = array(10, 80, 100, 11, 22, 21, 19, 10, 88, 89);

//sorting array in descending order
rsort (\$array);

//printing array elements after sorting
foreach( \$array as \$num ){

echo \$num."\n";
}
?>
```
```

Output

``````100
89
88
80
22
21
19
11
10
10
```

```

原文作者：cumt30111
原文地址: https://blog.csdn.net/cumt30111/article/details/107767288
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