Title: session_start() warning
Last modified: October 13, 2022

---

# session_start() warning

 *  Resolved [antonv](https://wordpress.org/support/users/antonv/)
 * (@antonv)
 * [3 years, 8 months ago](https://wordpress.org/support/topic/session_start-warning-2/)
 * I am evaluating WP Mailster, and the following warning is logged every minute
   or so
 * `[13-Oct-2022 11:02:02 UTC] PHP Warning: session_start(): Session cannot be started
   after headers have already been sent in /home/np/public_html/wp-content/plugins/
   wp-mailster/wp-mailster.php on line 1791`
 * accumulating about 200K of these messages every 24 hours
 * Would
 *     ```
       if (!session_id()) {
       if(!headers_sent())  session_start();
       }
       ```
   
 * resolve this?

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Plugin Author [brandtoss](https://wordpress.org/support/users/brandtoss/)
 * (@brandtoss)
 * [3 years, 7 months ago](https://wordpress.org/support/topic/session_start-warning-2/#post-16114747)
 * Hi [@antonv](https://wordpress.org/support/users/antonv/)
 * the upcoming release of WP Mailster will stop to use PHP sessions altogether.
   
   Then this be an issue of the past.
 * Expect it to come later this week.
 * Thanks,
    Holger
 *  Thread Starter [antonv](https://wordpress.org/support/users/antonv/)
 * (@antonv)
 * [3 years, 7 months ago](https://wordpress.org/support/topic/session_start-warning-2/#post-16116009)
 * Thanks, Good news indeed
 *  Plugin Author [brandtoss](https://wordpress.org/support/users/brandtoss/)
 * (@brandtoss)
 * [3 years, 7 months ago](https://wordpress.org/support/topic/session_start-warning-2/#post-16117500)
 * [@antonv](https://wordpress.org/support/users/antonv/) The release v1.8.3 is 
   now published

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘session_start() warning’ is closed to new replies.

 * ![](https://ps.w.org/wp-mailster/assets/icon-128x128.png?rev=1580666)
 * [WP Mailster](https://wordpress.org/plugins/wp-mailster/)
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 * 3 replies
 * 2 participants
 * Last reply from: [brandtoss](https://wordpress.org/support/users/brandtoss/)
 * Last activity: [3 years, 7 months ago](https://wordpress.org/support/topic/session_start-warning-2/#post-16117500)
 * Status: resolved