What the heck is a ->

[famous58]

So I asked a rather lengthy question [a href=\"http://www.phpfreaks.com/forums/index.php?showtopic=87298\" target=\"_blank\"]here[/a] and am thinking it might be a bit much.

So I thought I would start a little simpler (is that a word?).

What the heck is this little deal ->. I see it a lot in giant scripts that I didn't and couldn't write, and I'm thinking this might be something I want to learn about. I tried doing a search for that little dealy bob but of course nothing comes up. And seeing how I don't know what it's called it is kinda difficult to get info on what it is/does.

T.I.A. for any insight on this.

[kenrbnsn]

That operator is used with classes and object. I don't use them very often, so I can't give a simple explanation.

Take a look at [a href=\"http://us2.php.net/manual/en/ref.classobj.php\" target=\"_blank\"]http://us2.php.net/manual/en/ref.classobj.php[/a] and [a href=\"http://us2.php.net/manual/en/language.oop5.basic.php#language.oop5.basic.class\" target=\"_blank\"]http://us2.php.net/manual/en/language.oop5...op5.basic.class[/a]

Ken

[neylitalo]

This is used in the following syntax:

$object->method(); (where method is the name of a function, and object is an instance of a class)
$object->property; (where property is a variable in a class - the OOP term is property)

ie:

[code]<?php

class person
{
    public function __construct()
    {
        $firstName = "John";
        $lastName = "Smith";
    }

    public function getFirstName()
    {
        return $this->firstName;
    }

    public function getLastName()
    {
        return $this->lastName;
    }
}
?>[/code]

That's an example of a [i]class[/i]. $firstName and $lastName are [i]properties[/i] of the class, and getFirstName() and getLastName() are [i]methods[/i] of the class.

When referencing methods or properties [i]inside[/i] their containing class (look at getFirstName and getLastName), you use $this to reference the class. It's always an object on the left and a method or property on the right of the ->.

Hope I didn't confuse you. :)

[helpmeplease2]

[!--sizeo:3--][span style=\"font-size:12pt;line-height:100%\"][!--/sizeo--]Simpler[!--sizec--][/span][!--/sizec--]
[i]adj.[/i] [b]sim·pler[/b]
Not involved or complicated; easy

[famous58]

[!--quoteo(post=351228:date=Mar 2 2006, 07:25 PM:name=neylitalo)--][div class=\'quotetop\']QUOTE(neylitalo @ Mar 2 2006, 07:25 PM) [snapback]351228[/snapback][/div][div class=\'quotemain\'][!--quotec--]

Hope I didn't confuse you. :)
[/quote]

Not completely. How would I then use this method to pull info from an api return url? If I know the variables that are returned could I build a function that takes the info from a URL and then pull elements from what is returned. Does that make sense?

[neylitalo]

ah... you won't need classes to do this.

All you need to do this is access the $_GET array. Check this out.

If you're accessing this URL [code]http://www.domain.com/index.php?a=1&b=2[/code] then put this code into index.php to get the data from that URL:

[code]<?php

$a = $_GET['a'];
$b = $_GET['b'];

echo $a; //will echo 1
echo $b; //will echo 2

?>[/code]

[famous58]

[!--quoteo(post=351408:date=Mar 3 2006, 11:48 AM:name=neylitalo)--][div class=\'quotetop\']QUOTE(neylitalo @ Mar 3 2006, 11:48 AM) [snapback]351408[/snapback][/div][div class=\'quotemain\'][!--quotec--]
ah... you won't need classes to do this.

All you need to do this is access the $_GET array. Check this out.

If you're accessing this URL [code]http://www.domain.com/index.php?a=1&b=2[/code] then put this code into index.php to get the data from that URL:

[code]<?php

$a = $_GET['a'];
$b = $_GET['b'];

echo $a; //will echo 1
echo $b; //will echo 2

?>[/code]
[/quote]

Sa-Weet. It was worth getting out of bed today, I did gone and learnt something! Thanks!

[!--quoteo(post=351408:date=Mar 3 2006, 11:48 AM:name=neylitalo)--][div class=\'quotetop\']QUOTE(neylitalo @ Mar 3 2006, 11:48 AM) [snapback]351408[/snapback][/div][div class=\'quotemain\'][!--quotec--]
ah... you won't need classes to do this.

All you need to do this is access the $_GET array. Check this out.

If you're accessing this URL [code]http://www.domain.com/index.php?a=1&b=2[/code] then put this code into index.php to get the data from that URL:

[code]<?php

$a = $_GET['a'];
$b = $_GET['b'];

echo $a; //will echo 1
echo $b; //will echo 2

?>[/code]
[/quote]

Wait, maybe I spoke too soon. What if I don't have access to index.php cause it's on someone else's server (API)? So, I need to create a page that accesses a URL, get's the info from that URL and puts it into my page?

[dinardo01]

What is a =>

[wildteen88]

Blimmy! How old is this!

Any way please [url=http://www.phpfreaks.com/forums/index.php/topic,95867.0.html]read this FAQ[/url]

Thread closed.