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1. Remove_Action Issues
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2. "remove_action"
add_action triggers a function
attached to a specific hook
remove_action removes that same
function
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3. Issues with remove_action
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1. Wrong syntax
2. Removing something before it's added with
add_action (doesn't exist yet)
3. Theme/plugin already removing add_action
and re-adding it elsewhere
4. add_action contains "$this"

4. Correct (Matching) Syntax
add_action( 'hook_name', 'func_name', 99, 5 );
remove_action( 'hook_name', 'func_name', 99, 5 );
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5. Removing Later
add_action( 'wp', 'delay' );
function delay( ) {
remove_action( 'hook_name',
'func_name', 99, 5 );
}
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6. Removing Correct add_action
THEME:
remove_action( 'hook_name', 'func_name' ); // WC Default!
add_action( 'diff_hook_name', 'func_name' ); // Custom!
YOU:
add_action( 'wp', 'delay' );
function delay( ) {
remove_action( 'diff_hook_name', 'func_name' );
}
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7. add_action with $this
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● Added by a class (plugin, theme) e.g.
add_action( 'hook', array( $this, 'func' ) );
● You can't just do: remove_action( 'hook',
array( $this, 'func' ) ); as $this is not defined
● $this is the PHP class instance so:
○ need to remove_action AFTER add_action
○ need to dig deep into the PHP class and find out
more about it e.g. if global exists

8. remove_action with $this = $global
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add_action( 'wp', 'delay' );
function delay( ) {
global $my_class;
remove_action( 'hook_name', array (
$my_class, 'func_name' ) );
}

9. remove_action with static function
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add_action( 'wp', 'delay' );
function delay( ) {
remove_action( 'hook_name', array (
'class_name', 'func_name' ) );
}

10. remove_action with class instance
CustomizeWoo.com
add_action( 'wp', 'delay' );
function delay( ) {
remove_action( 'hook_name', array (
Class_Name(), 'func_name' ) );
}