PHP が性に合わないなと思う PHP の挙動

view plainprint?

1. kt3k-macbook:php-test $ cat this.php   
2. <?php  
3. pRiNt_R(aRrAy(true,TRUE,True,tRuE,tRUe));  
4. kt3k-macbook:php-test $ php this.php  
5. Array  
6. (  
7.     [0] => 1  
8.     [1] => 1  
9.     [2] => 1  
10.     [3] => 1  
11.     [4] => 1  
12. )  

kt3k-macbook:php-test $ cat this.php 
<?php
pRiNt_R(aRrAy(true,TRUE,True,tRuE,tRUe));
kt3k-macbook:php-test $ php this.php
Array
(
    [0] => 1
    [1] => 1
    [2] => 1
    [3] => 1
    [4] => 1
)