Smarty is a template engine for PHP, and one that is very easy to use at that.
It can be downloaded from http://www.smarty.net/download.php or is included in some Linux distributions.
Rather than repeat them all here, there are easy to use installation instructions on the Smarty website at http://www.smarty.net/quick_start.php
There are two ways primary ways to assign variables to Smarty, directly as a variable, e.g. a string or an integer which can be down via the following:
//assign an integer of 1 to the variable 'var1'
$smarty->assign('var1',1);
//assign a string 'test' to the variable 'var2'
$smarty->assign('var2','test');
//assign an array to the variable 'var3'
$smarty->assign('var3',array(1,2,3,4));
You can also pass an associative array to assign multiple variables at once, e.g:
$smarty->assign(array('var1' => 1,'var2' => 'test', 'var3' => array (1,2,3,4)));
This will have the same effect as the 3 lines above.
In the Smarty template, to use the variables, all you would need to do is the following:
{$var1}, this will output the value of $var1 wherever you write this.
The second way is to assign by reference, you would use this if you are assigning an object to the template, for example given a class called HelloClass that returns "Hello World" when you call its hello() function, you can assign it to smarty with:
$smarty->assign_by_ref('hello_class',new HelloClass);
and in the template you would call it with {$hello_class->hello()}
To display a template, the code is as follows:
$smarty->display('template.tpl');
There is much much more to Smarty, you can find its full manual at http://www.smarty.net/manual/en/
Showing posts with label hello world. Show all posts
Showing posts with label hello world. Show all posts
Sunday, 24 August 2008
Wednesday, 20 August 2008
Introduction to SimpleXML with PHP
The SimpleXML php extension make it very easy to parse and create basic XML files.
Here is a basic xml file that describes a message from one person to another:
If you create a file called test.xml with the content above then create a php file with the following, it will load in the xml file and output it as an SimpleXML object:
To change the value of a variable, you can simply do the following:
$xml->subject = "New Subject";
And to output the new XML file:
echo $xml->asXML();
which returns:
Here is a basic xml file that describes a message from one person to another:
<?xml version='1.0'?>
<message>
<subject>Hello</subject>
<from>user@example.com</from>
<to>user2@example.com</to>
<body>Hello World</body>
</message>
If you create a file called test.xml with the content above then create a php file with the following, it will load in the xml file and output it as an SimpleXML object:
Will output:
<?php
$xml = simplexml_load_file("test.xml");
print_r($xml);
?>
SimpleXMLElement ObjectTo reference a variable within the xml file you can use in the normal object way, e.g. $xml->subject
(
[subject] => Hello
[from] => user@example.com
[to] => user2@example.com
[body] => Hello World
)
To change the value of a variable, you can simply do the following:
$xml->subject = "New Subject";
And to output the new XML file:
echo $xml->asXML();
which returns:
<?xml version="1.0"?>Any questions/feedback please leave a comment
<message>
<subject>New Subject</subject>
<from>user@example.com</from>
<to>user2@example.com</to>
<body>Hello World</body>
</message>
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