What is the difference between main() and include in PHP?

The main difference between main() and include in PHP is that main() is not a built-in function in PHP, while include is a language construct used to include and evaluate the specified file in the current script. Main() is commonly used in languages like C or C++ to define the starting point of the program, while include is used to include reusable code from other files into the current script. 

<?php
// Using include to include a file with reusable code
include 'myfile.php';

// Using main() to define the starting point of the program (not applicable in PHP)
function main() {
  echo "Hello, World!";
}
?>

Keywords

main() include PHP function file inclusion

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