Title: PHP Warning
Last modified: August 21, 2016

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# PHP Warning

 *  Resolved [Jerry](https://wordpress.org/support/users/gerard749/)
 * (@gerard749)
 * [12 years, 1 month ago](https://wordpress.org/support/topic/php-warning-29/)
 * Hi,
 * I am not having any problems with my website or the function of your plugin but
   the warnings below are in the php.error_log in cpanel.
 * [04-Mar-2014 08:15:02 UTC] PHP Warning: session_start() [function.session-start]:
   The session id is too long or contains illegal characters, valid characters are
   a-z, A-Z, 0-9 and ‘-,’ in /home/pagesqua/public_html/wp-content/plugins/device-
   theme-switcher/inc/class.switcher.php on line 112
 * [04-Mar-2014 08:15:02 UTC] PHP Warning: session_start() [function.session-start]:
   Cannot send session cookie – headers already sent by (output started at /home/
   pagesqua/public_html/wp-content/plugins/device-theme-switcher/inc/class.switcher.
   php:112) in /home/pagesqua/public_html/wp-content/plugins/device-theme-switcher/
   inc/class.switcher.php on line 112
 * [04-Mar-2014 08:15:02 UTC] PHP Warning: session_start() [function.session-start]:
   Cannot send session cache limiter – headers already sent (output started at /
   home/pagesqua/public_html/wp-content/plugins/device-theme-switcher/inc/class.
   switcher.php:112) in /home/pagesqua/public_html/wp-content/plugins/device-theme-
   switcher/inc/class.switcher.php on line 112
 * Of note – line 112 is;
    if (session_id() == ”) session_start();
 * Thank you for your help
    Jerry
 * [https://wordpress.org/plugins/device-theme-switcher/](https://wordpress.org/plugins/device-theme-switcher/)

Viewing 1 replies (of 1 total)

 *  Plugin Author [James Mehorter](https://wordpress.org/support/users/jamesmehorter/)
 * (@jamesmehorter)
 * [12 years, 1 month ago](https://wordpress.org/support/topic/php-warning-29/#post-4777438)
 * Thanks for submitting this!

Viewing 1 replies (of 1 total)

The topic ‘PHP Warning’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/device-theme-switcher_b8a362.svg)
 * [Plugin Name: Device Theme Switcher](https://wordpress.org/plugins/device-theme-switcher/)
 * [Support Threads](https://wordpress.org/support/plugin/device-theme-switcher/)
 * [Active Topics](https://wordpress.org/support/plugin/device-theme-switcher/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/device-theme-switcher/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/device-theme-switcher/reviews/)

 * 1 reply
 * 2 participants
 * Last reply from: [James Mehorter](https://wordpress.org/support/users/jamesmehorter/)
 * Last activity: [12 years, 1 month ago](https://wordpress.org/support/topic/php-warning-29/#post-4777438)
 * Status: resolved