wp_ob_end_flush_all() tries to destroy non-destroyable output buffers
|Reported by:||dd32||Owned by:|
wp_ob_end_flush_all() currently tries to flush & destroy every PHP Output buffer that is enabled on the current installation.
However, not every type of PHP Output buffer can be destroyed, which will cause a PHP Notice when attempts to do so are made.
An example of this is PHP extensions such as New Relic, or PHP output buffers created with the $erase flag set to false in ob_start()
An example is when New Relic is installed on a host, also see New Relics FAQ entry on the issue.
( ! ) Notice: ob_end_flush(): failed to send buffer of New Relic auto-RUM (1) in ../trunk/wp-includes/functions.php on line 2641 Call Stack # Time Memory Function Location 1 0.8510 4328360 shutdown_action_hook( ) ../load.php:0 2 0.8510 4328440 do_action( ) ../load.php:556 3 0.8510 4329856 call_user_func_array ( ) ../plugin.php:406 4 0.8510 4329888 wp_ob_end_flush_all( ) ../plugin.php:406 5 0.8511 4330064 ob_end_flush ( ) ../functions.php:2641
Somewhat similar to #18239
I'm not sure of what the ideal solution for this would be for WordPress, but wanted to record the issue being known.