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add_filter( 'rewrite_rules_array', function( $rules ) {

	if ( ! function_exists( 'WC' ) || ! function_exists( 'affiliate_wp' ) ) {
		return $rules;
	}

	if ( true === version_compare( WC()->version, '3.0.0', '>=' ) ) {
		$permalinks = wc_get_permalink_structure();
	} else {
		$permalinks = get_option( 'woocommerce_permalinks' );

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<?php

class Beer {
    const NAME = 'Beer!';
    public static function printed(){
        echo 'static Beer:NAME = '. static::NAME . '<br />';
    }
}

class Ale extends Beer {

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<?php
/**
 * Adds 'Affiliates' Toolbar links in the My Sites drop-down.
 *
 * @param WP_Admin_Bar $wp_admin_bar Toolbar instance.
 */
function affiliate_toolbar_links( $wp_admin_bar ) {
	foreach ( $wp_admin_bar->user->blogs as $blog ) {
		$blog_id = $blog->userblog_id;

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<?php
	require_once( ABSPATH . WPINC . '/class-wp-customize-widgets.php' );
	$this->wp_customize->widgets = new WP_Customize_Widgets( $this->wp_customize );

	require_once( ABSPATH . WPINC . '/class-wp-customize-nav-menus.php' );
	$this->wp_customize->nav_menus = new WP_Customize_Nav_Menus( $this->wp_customize );

	// Restore setup for nav menus (normally hooked at priority 11).
	add_action( 'customize_register', array( $this->wp_customize->nav_menus, 'customize_register' ), 501 );

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mysql -u wp -p wp -e "drop database wptests; create database wptests;"

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<?php
/*
 * If hierarchical is false, and child_of is not empty, pages will (apparently) be returned
 * hierarchically anyway in order of creation: 3, 4, 5.
 */
$this->assertEqualSets( array( $page_3, $page_4, $page_5 ), wp_list_pluck( $pages, 'ID' ) );

// How it should work.
$found_pages = wp_list_filter( $pages, array( 'post_parent' => $page_1 ) );
$this->assertEqualSets( array( $page_3, $page_5 ), wp_list_pluck( $found_pages, 'ID' ) );

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wp_nav_menu( apply_filters( 'widget_nav_menu_args', $nav_menu_args, $nav_menu, $args, $instance, $this ) );

// $nav_menu_args
Array
(
    [fallback_cb] => 
    [menu] => stdClass Object
        (
            [term_id] => 176
            [name] => Short

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/**
 * Data provider.
 *
 * Description.
 *
 * @since x.x.x
 *
 * @see {method name receiving data}
 *
 * @otherPHPUnitSpecificItems

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/**
 * Hide media buttons from the default editor.
 *
 * @param array  $settings  _WP_Editors::editor() settings.
 * @param string $editor_id Editor ID.
 * @return array (maybe) modified editor settings.
 */
function hide_media_buttons( $settings, $editor_id ) {
	if ( 'post' == get_post_type() && 'content' == $editor_id ) {
		$settings['media_buttons'] = false;

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/**
 * Filter whether to skip parsing duplicate hooks.
 *
 * "Duplicate hooks" are characterized in WordPress core by a preceding DocBlock comment
 * including the phrases "This action is documented in" or "This filter is documented in".
 *
 * Passing a truthy value will skip the parsing of duplicate hooks.
 *
 * @param bool $skip Whether to skip parsing duplicate hooks. Default false.
 */