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PHP hackery: quick and dirty anonmyous objects

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Phillip Pearson

Posts: 1083
Nickname: myelin
Registered: Aug, 2003

Phillip Pearson is a Python hacker from New Zealand

PHP hackery: quick and dirty anonmyous objects

Posted: Jul 23, 2008 4:44 PM

This post originated from an RSS feed registered with Python Buzz by Phillip Pearson.
Original Post: PHP hackery: quick and dirty anonmyous objects Feed Title: Second p0st Feed URL: http://www.myelin.co.nz/post/rss.xml Feed Description: Tech notes and web hackery from the guy that brought you bzero, Python Community Server, the Blogging Ecosystem and the Internet Topic Exchange	Latest Python Buzz Posts Latest Python Buzz Posts by Phillip Pearson Latest Posts From Second p0st

Here's an awesome trick: you can cast arrays to objects in PHP then access them like objects. The brilliant part about it is that it appears to make them act like objects, i.e. $b = $a makes $a and $b point to the same object (like pretty much every other dynamic language) rather than copying $a.

$ php

<


$a = array(1, 2, 3);

$b = $a;

$a[] = 4;

$b[] = 5;



$c = (object)$a;

$d = $c;

$c->>foo = "bar";

$d->>baz = "boz";



echo '$a: '.var_export($a, TRUE)."\n";

echo '$b: '.var_export($b, TRUE)."\n";

echo '$c: '.var_export($c, TRUE)."\n";

echo '$d: '.var_export($d, TRUE)."\n";

?>>

$a: array (

  0 =>> 1,

  1 =>> 2,

  2 =>> 3,

  3 =>> 4,

)

$b: array (

  0 =>> 1,

  1 =>> 2,

  2 =>> 3,

  3 =>> 5,

)

$c: stdClass::__set_state(array(

   'foo' =>> 'bar',

   'baz' =>> 'boz',

))

$d: stdClass::__set_state(array(

   'foo' =>> 'bar',

   'baz' =>> 'boz',

))

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