PHP Class Exercises: An introductory message as an argument value of the method within the class

PHP class: Exercise-2 with Solution

Write a simple PHP class which displays an introductory message like "Hello All, I am Scott", where "Scott" is an argument value of the method within the class.

Sample Solution:

PHP Code:

<?php
// Define a class named user_message
class user_message {
    // Define a public property named $message and initialize it with a default value
    public $message = 'Hello All, I am ';

    // Define a method named introduce which accepts a parameter $name
    public function introduce($name)
    {
        // Concatenate the message with the provided name and return the result
        return $this->message.$name;
    }
}

// Create an instance of the user_message class
$mymessage = new user_message();

// Call the introduce method of the $mymessage object and output the result
echo $mymessage->introduce('Scott')."\n";
?>

Output:

Hello All, I am Scott

Explanation:

In the exercise above,

• class user_message {: This line defines a class named "user_message".
• public $message = 'Hello All, I am ';: This line defines a public property named '$message' and initializes it with the string value 'Hello All, I am '.
• public function introduce($name) {: This line defines a public method named "introduce()" which accepts a parameter '$name'.
• return $this->message.$name;: This line concatenates the value of the '$message' property with the provided '$name' parameter and returns the resulting string.
• $mymessage = new user_message();: This line creates an instance of the user_message class.
• echo $mymessage->introduce('Scott')."\n";: This line calls the "introduce()" method of the "$mymessage" object, passing the string 'Scott' as an argument, and outputs the returned string followed by a newline character.

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