Loading numbers into a PHP array - unexpected problems -

i'm trying define array of numbers this:

$days_pages = array( 'monday' => array(001, 002, 003, 004, 005, 006, 007, 008, 009, 010, 011, 012, 013, 014, 015, 016, 017, 018, 019, 020), ... ); 

however, when do:

print_r($days_pages); 

it shows

array (     [monday] => array         (             [0] => 1             [1] => 2             [2] => 3             [3] => 4             [4] => 5             [5] => 6             [6] => 7             [7] => 0   **************             [8] => 0   **************             [9] => 8             [10] => 9             [11] => 10             [12] => 11             [13] => 12             [14] => 13             [15] => 14             [16] => 15             [17] => 1    **************             [18] => 1    **************             [19] => 16             [20] => 17 

i dont understand why happening - doing wrong?

if invalid digit given in octal integer (i.e. 8 or 9), rest of number ignored

like

<?php var_dump(01090); // 010 octal = 8 decimal ?> 

so

008, 009

its not valid , 0

look in previous post on octal numbers (a few minutes ago)

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