ByteEnable

This is a widget plugin that allow’s you to mix PHP and html code with mobile 
support. Two text area’s are provided. The first is the standard “Title”. 
The one named “Code:” can mix PHP and html. Two checkboxes allow you to choose 
before and/or after posts. No limit on the number of widgets.
WordPress version 3.4 and higher has defined a function called wp_is_mobile(). 
This can be used inside your code mix to perform certain actions if the 
browser is mobile. Mobile support is via wp_is_mobile() function which returns 
true if on a mobile browser. See the WordPress API for more information.
Dynamic title support means that you can name your widget using the title 
field and not have it displayed in the output. This is useful to give 
your widgets meaningful names so you don’t lose track of what is going 
on with your widgets.
Two variables have been defined for use with Google Mobile Adsense:
$myMobileAdsenseCode; 
$myMobileAdsenseSlot;
This widget requires some knowledge of PHP and HTML coding. Misuse could crash 
your site or cause errors with Adsense.
Examples:
Output: 
5
To use Google mobile adsense include the following in the “Code:” area:
The plugin will take care of the rest. Another check is made to ensure 
that wp_is_mobile is true inside the plugin and that the Google Adsense variable 
has a value.
You can combine both regular and mobile adsense. Be careful.
The following snippet will either show mobile or regular ads depending on the 
browswer used by the end-user.
< ?php 
if ( !wp_is_mobile() ) { 
echo ' 

(adsbygoogle = window.adsbygoogle || []).push({}); 
‘;} 
else { 
$myMobileAdsenseClient=’ca-mb-pub-xxxxxxxxxxxx’; 
$myMobileAdsenseSlot=’xxxxxxxxxx’; 
}?>
Ordered list:
<ol>
<li>Support for the mixing of PHP and HTML</li>
<li>Support for mobile browsers</li>
<li>Support for Google Adsense including mobilie</li>
<li>Includes “before post” support</li>
<li>Includes “after post” support</li>
<li>No limit on the number of widgets</li>
<li>Includes dynamic title support in sidebars</li>
</ol>
Unordered list:
<ul>
<li>Support for the mixing of PHP and HTML</li>
<li>Support for mobile browsers</li>
<li>Support for Google adsense including mobile</li>
<li>Includes support for “before post”</li>
<li>Includes support for “after post”</li>
<li>No limit on the number of widgets</li>
<li>Include dynamic title support in sidebars</li>
</ul>
Link to [WordPress](https://wordpress.org/ \”Your favorite software\”) and one to [Markdown\’s Syntax Documentation][markdown syntax].

Byte's PHP Code Widget

Mix HTML and PHP in a widget with mobile support.

flashpixx

With this plugin can added native PHP code within article and blog data. For logged-in user PHP error messages are shown for debugging the PHP code. Each 
code block is run like a PHP function. Own functions can be added to the plugin and can be included on other calls. For article writers the execution of 
PHP code can be disabled, so the administrator can create different function, that can be used by the writers. Output of the PHP code are included 
within the article.
<h4>Features</h4>
<ul>
<li>inline code on articles / pages</li>
<li>function define and include</li>
<li>only execution of defined functions</li>
<li>any PHP error message is passed to the author</li>
<li>disabling PHP error messages</li>
<li>execution can be denied by a keyword list</li>
</ul>
<h3>Requirements</h3>
<ul>
<li>PHP 5.3.0 or newer</li>
</ul>
<h3>Shortcode</h3>
For inline code you can use:
<pre>[evalphp] your code [/evalphp]</pre>
For included code:
<pre>[evalphp include="your includes"]</pre>
The include parameter is optional and can be used on both shortcodes.

Eval PHP

This plugin runs native PHP code that can be added to post and page data.

Byte's PHP Code Widget vs Eval PHP