﻿ PHP Class Exercise: Sort an ordered integer array with the help of sort() function - w3resource

# PHP Class Exercises : Sort an ordered integer array with the help of sort() function

## PHP class: Exercise-4 with Solution

Write a PHP class that sorts an ordered integer array with the help of sort() function.

Sample array : array(11, -2, 4, 35, 0, 8, -9)

Sample Solution:

PHP Code:

``````<?php
// Define a class named array_sort
class array_sort
{
// Declare a protected property named \$_asort to store the array
protected \$_asort;

// Define the constructor method which accepts an array \$asort
public function __construct(array \$asort)
{
// Assign the provided array to the protected property \$_asort
\$this->_asort = \$asort;
}

// Define a method named alhsort to sort the array in ascending order
public function alhsort()
{
// Create a copy of the original array
\$sorted = \$this->_asort;
// Sort the copied array in ascending order
sort(\$sorted);
// Return the sorted array
return \$sorted;
}
}

// Create an instance of the array_sort class with an array argument
\$sortarray = new array_sort(array(11, -2, 4, 35, 0, 8, -9));

// Call the alhsort method of the \$sortarray object and print the sorted array
print_r(\$sortarray->alhsort())."\n";
?>
```
```

Output:

```Array
(
[0] => -9
[1] => -2
[2] => 0
[3] => 4
[4] => 8
[5] => 11
[6] => 35
)
```

Explanation:

In the exercise above,

• class array_sort {: This line defines a class named "array_sort".
• protected \$_asort;: This line declares a protected property named '\$_asort' to store the array.
• public function __construct(array \$asort) {: This line defines the constructor method of the class which accepts an array '\$asort' as a parameter.
• \$this->_asort = \$asort;: This line assigns the provided array '\$asort' to the protected property '\$_asort'.
• public function alhsort() {: This line defines a public method named "alhsort()" which sorts the array stored in '\$_asort' in ascending order.
• \$sorted = \$this->_asort;: This line creates a copy of the original array stored in '\$_asort'.
• sort(\$sorted);: This line sorts the copied array '\$sorted' in ascending order using the sort function.
• return \$sorted;: This line returns the sorted array.
• \$sortarray = new array_sort(array(11, -2, 4, 35, 0, 8, -9));: This line creates a new instance of the array_sort class with the provided array as an argument.
• print_r(\$sortarray->alhsort())."\n";: This line calls the "alhsort()" method of the "\$sortarray" object to sort the array and prints the sorted array using "print_r".

Flowchart :

PHP Code Editor:

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