How do namespace work in PHP

Question

I'm trying to instantiate a class that use namespace.

<?php namespace CFPropertyList; require_once('CFPropertyList/CFPropertyList.php'); $plist = new CFPropertyList(); ?>

That's working!

But when I try put that code into my class I get syntax errors. I can't use "namespace CFPropertyList;" in a class?

 <?php class Plist{ public function test(){ namespace CFPropertyList; require_once('CFPropertyList/CFPropertyList.php'); $plist = new CFPropertyList(); } } ?>

UPDATE:

Thanks to all I got this working.

<?php namespace CFPropertyList; require_once('CFPropertyList/CFPropertyList.php'); class Plist{ public function test(){ //some code } } }

But is my own class in a namespace now? Sorry for the noob questions. I can't do.

 $plist = new Plist; $plist->test();

Fenton · Accepted Answer · 2012-11-14 11:01:08Z

2

Your namespace should be declared before your class, so the class would then belong to that namespace:

plist.php

 <?php namespace CFPropertyList; class Plist{ public function test() { echo 'Test'; } } ?>

other.php

 <?php require_once('plist.php'); $plist = new CFPropertyList::Plist(); $plist.test(); ?>

edited Nov 14, 2012 at 11:01

answered Nov 14, 2012 at 9:19

Fenton

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2 Comments

Toydor Over a year ago

That's working but, now I got a new problem '$plist = new Plist; $plist->test();'. Class 'Plist' not found

Fenton Over a year ago

If you are calling it from outside the namespace you need CFPropertyList::Plist

Louis Huppenbauer · Accepted Answer · 2012-11-14 09:18:22Z

1

You have to put the namespace definition outside the class definition. (Besides that your class definition seems to be pretty messed up. Don't you have any class methods?)

answered Nov 14, 2012 at 9:18

Louis Huppenbauer

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2 Comments

Toydor Over a year ago

fixed the methods! =) but I can't put the namespace outside the class definition.

Louis Huppenbauer Over a year ago

That's the only way. See the answer by @air4x.

air4x · Accepted Answer · 2012-11-14 09:22:15Z

From Defining namespaces

Namespaces are declared using the namespace keyword. A file containing a namespace must declare the namespace at the top of the file before any other code - with one exception: the declare keyword.

So you must declare it at the top of the file.

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