What is the difference between echo, print, and print_r when outputting an array in PHP?

When outputting an array in PHP, the main difference between echo, print, and print_r lies in how they handle arrays. - echo is a language construct that can output one or more strings, but it cannot directly output arrays. - print is a function that can output a single string, and it can also handle arrays but with limitations. - print_r is a function specifically designed for displaying the contents of arrays in a human-readable format. If you want to output an array in PHP, especially for debugging purposes, it's recommended to use print_r for better readability.

<?php
$array = [1, 2, 3, 4, 5];

// Using echo
echo $array; // This will not output the array

// Using print
print $array; // This will output only the first element of the array

// Using print_r
print_r($array); // This will output the entire array in a human-readable format
?>