Includes #

PHP includes work with any files relative to the uploaded files in the ZIP. For example your index file may look like:

<?php
	include 'database.class.php';
	$db = new DBClass();

	include 'config/config.php';
?>

The file structure of your portlet will look like:

index.php
database.class.php
config/
	config.php

POST and GET #

Both the $_POST and $_GET arrays are available to a PHP portlet through their normal syntax.

POST variables should be unaffected. Use them as normal.

GET variables can be passed through HTML by using normal relative URL paths. For example:

<?php /* some PHP code here */ ?>
<a href="index.php?a=my_action&id=<?=$item_id;?>">click here</a>

Redirects #

Normal PHP header redirects do not work.

Ajax (XHR) #

Performing any XMLHTTPRequest requires you know the entire portlet URL, but changing key variables to receive the desired return type (JSON, XML, HTML, etc.). For example:

jQuery.ajax({
	url: "http://domain.com/web/path/pagename"+
		"?p_p_id=portletname_WAR_portletname&p_p_lifecycle=0&p_p_state=exclusive"+
		"&p_p_mode=view&_portletname_WAR_portletname_phpURI=results.php?s=" + s,
	success: function(html) {
		jQuery("#resultLinks").show();
		jQuery("#searchResults").append(html);
	}

Javascript #

Beware that Liferay strips out new lines on the rendered code. Therefore, only block comments will work in Javascript. For example:

Bad:

// this comment will break anything trailing it
var item = someItem;

In the above example "var item=someitem;" will never be evaluated.

Good:

/* this comment will not break anything */
var item = someItem;