Custom PHP code may be embedded in some types of site content, including posts and blocks. While embedding PHP code inside a post or block is a powerful and flexible feature when used by a trusted user with PHP experience, it is a significant and dangerous security risk when used improperly. Even a small mistake when posting PHP code may accidentally compromise your site.
If you are unfamiliar with PHP, SQL, or Drupal, avoid using custom PHP code within posts. Experimenting with PHP may corrupt your database, render your site inoperable, or significantly compromise security.
Notes:
register_globals
is turned off. If you need to use forms, understand and use the functions in the Drupal Form API.print
or return
statement in your code to output content.template.php
file rather than embedding it directly into a post or block.A basic example: Creating a "Welcome" block that greets visitors with a simple message.
Add a custom block to your site, named "Welcome" . With its text format set to "PHP code" (or another format supporting PHP input), add the following in the Block body:
print t('Welcome visitor! Thank you for visiting.');
To display the name of a registered user, use this instead:
global $user; if ($user->uid) { print t('Welcome @name! Thank you for visiting.', array('@name' => format_username($user))); } else { print t('Welcome visitor! Thank you for visiting.'); }
Drupal.org offers some example PHP snippets, or you can create your own with some PHP experience and knowledge of the Drupal system.
[quote (class="additional class" | author="author name")]text[/quote] Formats the text like as a quote.
Sample css:
.quote {
display:block;
float:left;
width:30%;
margin:20px;
margin-left:0;
padding:5px 0 5px 20px;
font-style:italic;
border-left:3px solid #E8E8E8;
line-heigh:1.5em;
font-size:14px;
letter-spacing: 1px;
word-spacing: 2px;
}
.quote.right{
float:right;
margin-right:0;
margin-left:20px;
}
 
[img src="image.jpg" (class="additional class"|alt="alt text")/] Inserts an image based on the given image url.
[highlight (class="additional class")]text[/highlight] Inserts span.highlight around the text.
Sample css:
span.highlight{
background-color:red;
}
span.highlight2{
background-color:cyan;
}
 
[button path="path" (class="additional class")]text[/button] Inserts a link formatted as a button. Use the url parameter for the link.
[dropcap (class="additional class")]text[/dropcap] Makes dropcap from the text.
Sample css:
.dropcap {
display:block;
float:left;
font-size:38px;
line-height:38px;
vertical-align:baseline;
padding-right:5px;
}
 
[item (class="additional class"|id=item id|type=div,d,span,s)]text[/item] Inserts an html item (type parameter = div or span) around the given text.
Additional class names can be added by the class parameter. The id parameter gives the html an unique css id.
 
[clear (class="additional class"|id=item id|type=div,d,span,s)]text[/clear] Inserts a float-clearing html item (type parameter = div or span) around the given text. Use the simple [clear /].
Additional class names can be added by the class parameter. The id parameter gives the html an unique css id.
 
[link path="the Drupal path"]link text[/link] Inserts aliased Drupal path around the link text.
If you omit the text and the closing [/link] tag, you get back the URL only.
Additional parameters for the link: 
[random (length="8") /] Inserts a random text with the given length.
 
[embed_content nid=nodeid (class="additional class")/] Embed a node by nid into the text. Additional class names can be added by the class parameter.
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