The file name where the php detection function is located

A very simple function, using the reflection mechanism in PHP, specifically using the ReflectionFunction class, to obtain the specific location in the PHP script where the specified function is located. Create a reference script.

// Filename: functions.php 
<?php
function now() {
    return time();
}
?>

Call the function.

// Filename: call_now.php
<?php
require &#39;functions.php&#39;;
 
Reflection::export(new ReflectionFunction(&#39;now&#39;));
// Function [ function now ] { @@ H:\www\functions.php 2 - 4 }
?>