PHP: what is =>?

[eldersoares]

hello
i've found in some codes this => but in the php docs it doesnt appear like an operator os smth like this... it seems to be somth related to arrays... but what is it exactly?!?!?!??!

thanks

[jespdj]

You can find everything you want to know about PHP on: http://www.php.net

For an anwer to your question have a look at this: http://www.php.net/manual/en/language.types.array.php

[eldersoares]

ok thanks

[maddog39]

It defines the value of the second parameter in a 2D array. If that even makes sense. If you take a look at the foreach() control structure, you will see how this exactly works. Hard to explain really.

[Compyx]

It defines the value of the second parameter in a 2D array. If that even makes sense. If you take a look at the foreach() control structure, you will see how this exactly works. Hard to explain really.

No, the => operator maps a key to a value in an array. In PHP these constructs are called associative arrays, in Perl they're called hashes.

This:

$MyArray = array (
"cpu" => "Athon XP",
"mem" => "1 GB",
"hdd" => "120 GB"
);


Generates a 1-dimensional associative array (a hash actually), in which a value can be looked up by a label, eg:

echo $MyArray["cpu"];

will print "Athlon XP".

All this is explained in great detail on the PHP website, as mentioned in an earlier post.

[smartbei]

It is also used in:

$arr=array("x","y","z");
foreach($arr as $key => $val)
echo "$key $val<br>";

would print out:

0 x
1 y
2 z