PHP program to demonstrate the Array index out of bound exception using exception handling

Program/Source Code:

The source code to demonstrate the Array index out of bound exception using exception handling is given below. The given program is compiled and executed successfully.

<?php
//PHP program to demonstrate the Array index 
//out of bound exception using exception handling.
try
{
    $colors = array(
        "Red",
        "Green",
        "Blue"
    );
    $index = 3;

    if ($index >= count($colors)) throw new Exception("Array index out of bound");

    printf("Array element: %s<br>", $colors[$index]);

}
catch(Exception $e)
{
    printf("Exception: %s", $e->getMessage());
}
?>

Output:

Exception: Array index out of bound

Explanation:

Here, we created used try and catch block. In the try block - we created an array that contains the name of colors. We also created the local variable $index to access the element from the array from the specified index.

if($index>=count($colors))
    throw new Exception("Array index out of bound");

Here, we check the condition, if the value of $index is greater than or equal to the total elements of the array then we will throw an exception with a specified message using the throw keyword that will be caught by catch block and print specified message on the webpage.