Cannot modify header information – headers already sent by… WordPress Issue in Plugins

Some times when we add function wp_redirect() in wordpress plugin it gives error notice that “cannot modify header information. headers already sent by… see in pluggable.php in 934 line“. Then First check if any extra space not remain in wordpress plugin code. If not then add ob_start(); in function call with init hook in wordpress.

//allow redirection, even if my theme starts to send output to the browser
add_action(‘init’, ‘do_output_buffer’);
function do_output_buffer() {


12 responses to “Cannot modify header information – headers already sent by… WordPress Issue in Plugins

    • thanks for your comments…:-) It is not paid subject matter. I am a php developer and sometime i got some issue during development so post those issue here with there solution so in future not only i but anyone can get help from here. main object behind the blog is just to share our issues and there solutions with other so it can helpful for everyone. anybody can post here there problems or the solutions …:-)

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