BEETWEN INCLUDE AND INCLUDE_ONCE

Format :

• include(file_include)
• include_once(file_include)

Expalin :

• include()
  in indonesian (memasukkan)  -> memasukan file lain kedalam file sendiri.
• include_once()
  in indonesian (memasukkan_sekali)  -> memasukan file lain kedalam file sendiri dan cuman sekali.

Example :

index.php

<?PHP
include("include.php");
include("include.php");
include("include.php");
include_once("include_once.php");
include_once("include_once.php");
include_once("include_once.php");
?>

include.php

<?PHP
echo "include!<br>";
?>

include_once.php;

<?PHP
echo "include Once!<br>";
?>

output from index.php  

Saya include!
Saya include!
Saya include!
Saya include_once!