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Remove Filters of class files with out invoking class.
<?php
function remove_class_filter( $tag, $class_name = '', $method_name = '', $priority = 10 ) {
global $wp_filter;
// Check that filter actually exists first
if ( ! isset( $wp_filter[ $tag ] ) ) return FALSE;
if ( is_object( $wp_filter[ $tag ] ) && isset( $wp_filter[ $tag ]->callbacks ) ) {
// Create $fob object from filter tag, to use below
$fob = $wp_filter[ $tag ];
$callbacks = &$wp_filter[ $tag ]->callbacks;
} else {
$callbacks = &$wp_filter[ $tag ];
}
// Exit if there aren't any callbacks for specified priority
if ( ! isset( $callbacks[ $priority ] ) || empty( $callbacks[ $priority ] ) ) return FALSE;
// Loop through each filter for the specified priority, looking for our class & method
foreach( (array) $callbacks[ $priority ] as $filter_id => $filter ) {
// Filter should always be an array - array( $this, 'method' ), if not goto next
if ( ! isset( $filter[ 'function' ] ) || ! is_array( $filter[ 'function' ] ) ) continue;
// If first value in array is not an object, it can't be a class
if ( ! is_object( $filter[ 'function' ][ 0 ] ) ) continue;
// Method doesn't match the one we're looking for, goto next
if ( $filter[ 'function' ][ 1 ] !== $method_name ) continue;
// Method matched, now let's check the Class
if ( get_class( $filter[ 'function' ][ 0 ] ) === $class_name ) {
// WordPress 4.7+ use core remove_filter() since we found the class object
if( isset( $fob ) ){
// Handles removing filter, reseting callback priority keys mid-iteration, etc.
$fob->remove_filter( $tag, $filter['function'], $priority );
} else {
// Use legacy removal process (pre 4.7)
unset( $callbacks[ $priority ][ $filter_id ] );
// and if it was the only filter in that priority, unset that priority
if ( empty( $callbacks[ $priority ] ) ) {
unset( $callbacks[ $priority ] );
}
// and if the only filter for that tag, set the tag to an empty array
if ( empty( $callbacks ) ) {
$callbacks = array();
}
// Remove this filter from merged_filters, which specifies if filters have been sorted
unset( $GLOBALS['merged_filters'][ $tag ] );
}
return TRUE;
}
}
return FALSE;
}
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