Some plugins place various links under their name on the primary column on the plugin page. So we end up with something like:
Home Page | Support Forums | Documentation | Upgrade to Pro Edition | Donate | Settings | Activate | Delete
In an effort to keep just the standard links Settings | Activate | Delete
we use in our custom 01_plugin.php
the following code:
global $pagenow;
if( $pagenow == 'plugins.php' ) {
echo '<style type="text/css">
.visible .proupgrade,
.visible .docs,
.visible .forum,
.visible .jetpack-home,
.visible .support
{display: none ;
}
</style>';
}
When debugging, for some reason, it gives a PHP Warning:
PHP Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /wp-content/plugins/01-plugin/01_plugin.php:282) in /wp-content/plugins/wp-miniaudioplayer/miniAudioPlayer.php on line 231
Can someone point us to the right direction? Which hook should we use?
Is there another way to achieve our goal?
EDIT
To better understand where these links are located, please have a look at the screenshot:
As you can see they bloat the primary column out of proportion, using/wasting precious space, that could be otherwise awarded to the secondary column.
Note: The primary column does not wrap. The secondary does.