Memory Question

PHP
1

I have the following language files:

main.php

<?php

$lang = array(
	'blogName' => 'Blog Name',
	'home' => 'Home', 
	'contact' => 'Contact'
);

?>

register.php

<?php

$regLang = array(
	'register' => 'Register'
	'name' => 'Name'
	'email' => 'email'
	'password' => 'Password'
);

$lang = array_merge($regLang, $lang);

?>

After $regLang and $lang have been merged, does $lang and $regLang point to the same elements in memory?

For example, does $regLang[‘name’] and $lang[‘name’] point to the same place in the server’s RAM?

2 
$lang1 = array( 
    'blogName' => 'Blog Name', 
    'home' => 'Home',  
    'contact' => 'Contact' 
);
$lang2 = array( 
    'register' => 'Register' ,
    'name' => 'MyName' ,
    'email' => 'email' ,
    'password' => 'Password' 
); 

$lang3 = array_merge($lang2, $lang1);

echo $lang3['name'] . ' / ' . $lang2['name'] .'<br >';
// MyName / MyName

// alter the copy **
$lang3['name'] = 'YourName';

echo $lang3['name'] . ' / ' . $lang2['name'] ;
// YourName / MyName

Nope, it made a copy, and works on that copy only.

Alter that to $lang2 and you will see the inverse.

Edit:

Why, do you want them to stay in sync?

3

Ok, so it would be best to use unset($regLang) after the merge if I don’t need it anymore or just wait till the end of the script?

4

Good point I guess, if you have 1000 people hit your server for that fleeting instant for the exact same time, then I’d say you have a point in worrying.

Otherwise forget about it, and let PHP clean up after you - because that is one of the main reasons we use it.

5

Thanks for you help :).