Conversion de Twitter Status ID

gistfile1.txt

Python
======

>>> status_id = int(184846323277770752)
>>> timestamp = (status_id >> 22)
>>> print timestamp
44070797748
>>> timestamp = (status_id >> 22) + 1288834974657
>>> print timestamp
1332905772405
>>> import time
>>> print time.ctime(timestamp/1000)
Wed Mar 28 00:36:12 2012

PHP
===

php > $status_id = '184846323277770752';
php > $timestamp = ($status_id >> 22);
php > echo $timestamp;
511
php > $timestamp = ($status_id >> 22) + '1288834974657';
php > echo $timestamp;
1288834975168

The integer value of var on success, or 0 on failure. Empty arrays return 0, non-empty arrays return 1.

The maximum value depends on the system. 32 bit systems have a maximum signed integer range of -2147483648 to 2147483647. So for example on such a system, intval('1000000000000') will return 2147483647. The maximum signed integer value for 64 bit systems is 9223372036854775807.

Strings will most likely return 0 although this depends on the leftmost characters of the string. The common rules of integer casting apply. 

php > $status_id = (int) '184846323277770752';
php > var_dump($status_id);
int(184846323277770752)
php > $timestamp = ($status_id >> 22);
php > echo $timestamp;
44070797748
php > $timestamp = ($status_id >> 22) + '1288834974657';
php > echo $timestamp;
1332905772405

Ah, pero estoy en 64 bits

Darwin Lightie.local 11.3.0 Darwin Kernel Version 11.3.0: Thu Jan 12 18:47:41 PST 2012; root:xnu-1699.24.23~1/RELEASE_X86_64 x86_64

Si, eso, estás en 64bits :)
No probe en AWS. Quizas haya suerte.

Una solución sucia:

$ cat tweet_time.py

import sys
import time

status_id = int(sys.argv[1])
timestamp = (status_id>>22) + 1288834974657
print time.ctime(timestamp/1000)

$ php -a

php > echo python tweet_time.py 184846323277770752;
Wed Mar 28 00:36:12 2012

Ah, en 64 bits hasta el bitwise anda. Todavia no resolví la parte de la conversión de tiempos. Supongo que date() alcanza, indeed:

php > $timestamp = 1332905772405/1000;
php > echo date('Y-m-d', $timestamp);
2012-03-28

El quid es obtener un $timestamp valido, con un INT valido.

php > print PHP_INT_MAX;
2147483647

Para leer con menos sueño:
http://stackoverflow.com/questions/300840/force-php-integer-overflow