Title: Warning: Cannot modify header information
Last modified: August 19, 2016

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# Warning: Cannot modify header information

 *  [todinishika](https://wordpress.org/support/users/todinishika/)
 * (@todinishika)
 * [17 years, 6 months ago](https://wordpress.org/support/topic/warning-cannot-modify-header-information-21/)
 * When I tried to add a new plugin it gives a warning like
    Warning: Cannot modify
   header information headers already sent by (output started at – **************/
   wp-content/plugins/imagepop.php:11) in ***************/wp-includes/pluggable.
   php on line 770
 * In my main php file in plugin I added only header plugin header information and
   one filter just as follows,
 * <php
    /* Plugin Name: imagepop Description: A plugin that pops-up images when
   you mouse-over certain words. Author: Dinishika Version: 2.6 URL: [http://dinishi.com](http://dinishi.com)*/?
   > <?php add_filter(’the_content’, ‘imagpop_the_content’); function imagpop_the_content(
   $content) { return $content; } ?>
 * I’m a newbie to the wordpress and like to play with it. Please help me.

Viewing 1 replies (of 1 total)

 *  [sweetangst](https://wordpress.org/support/users/sweetangst/)
 * (@sweetangst)
 * [16 years, 10 months ago](https://wordpress.org/support/topic/warning-cannot-modify-header-information-21/#post-886826)
 * [http://themelib.com/2008/07/warning-can-not-modify-header-information-error-wordpress/](http://themelib.com/2008/07/warning-can-not-modify-header-information-error-wordpress/)

Viewing 1 replies (of 1 total)

The topic ‘Warning: Cannot modify header information’ is closed to new replies.

## Tags

 * [Cannot modify header information](https://wordpress.org/support/topic-tag/cannot-modify-header-information/)

 * 1 reply
 * 2 participants
 * Last reply from: [sweetangst](https://wordpress.org/support/users/sweetangst/)
 * Last activity: [16 years, 10 months ago](https://wordpress.org/support/topic/warning-cannot-modify-header-information-21/#post-886826)
 * Status: not resolved

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