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Execute PHP in WordPress Widgets

While it's a rather horrible idea, this code will permit you to execute PHP code in WordPress widgets. There's never a need to use it; use shortcodes instead. However, it may come in handy at some point.

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<?php 
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/*
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 Execute PHP in WordPress Widgets
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 http://www.beliefmedia.com/code/wp-snippets/execute-php-wordpress-widgets
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*/
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function beliefmedia_execute_php_widgets($html) {
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  if (strpos($html, '<' . '?php') !==false) {
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    ob_start();
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    eval('?' . '>' . $html);
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    $html = ob_get_contents();
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    ob_end_clean();
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  }
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 return $html;
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}
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add_filter('widget_text', 'beliefmedia_execute_php_widgets', 100);

Again, use shortcodes and enable the widget_text filter as follows:

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add_filter('widget_text', 'do_shortcode');

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