If you are trying to find a file on your include path, there is a better way: http://php.net/manual/en/function.stream-resolve-include-path.php
(PHP 4 >= 4.3.0, PHP 5, PHP 7, PHP 8)
get_include_path — Lee el valor de la directiva de configuración include_path
Lee el valor de la directiva de configuración include_path.
Esta función no tiene parámetros.
Ejemplo #1 Ejemplo con get_include_path()
<?php
echo get_include_path();
// O utilizar ini_get()
echo ini_get('include_path');
?>
If you are trying to find a file on your include path, there is a better way: http://php.net/manual/en/function.stream-resolve-include-path.php