What is the significance of the explode function in the context of the code provided and how does it affect the output?

The explode function in PHP is used to split a string into an array based on a specified delimiter. In the context of the provided code, the explode function is splitting the $str variable at each space, creating an array of words. This allows the program to count the number of words in the input string and output the result. 

<?php
$str = "Hello World";
$words = explode(" ", $str);
$count = count($words);
echo "Number of words: " . $count;
?>

Keywords

explode PHP function string manipulation array output

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