_wp_menu_output

函式
_wp_menu_output ( $menu, $submenu, $submenu_as_parent = true )
Access
Private
引數
  • (array) $menu
    Required:
  • (array) $submenu
    Required:
  • (bool) $submenu_as_parent
    Required:
    Default: true
定義位置
相關方法
wp_widget_rss_outputwp_nav_menu_setupwpmu_menuwp_is_local_html_outputwp_maybe_auto_update
引入
2.7.0
棄用
-

_wp_menu_output: 這個函式負責輸出選單的HTML。

顯示選單。

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function _wp_menu_output( $menu, $submenu, $submenu_as_parent = true ) {
global $self, $parent_file, $submenu_file, $plugin_page, $typenow;
$first = true;
// 0 = menu_title, 1 = capability, 2 = menu_slug, 3 = page_title, 4 = classes, 5 = hookname, 6 = icon_url.
foreach ( $menu as $key => $item ) {
$admin_is_parent = false;
$class = array();
$aria_attributes = '';
$aria_hidden = '';
$is_separator = false;
if ( $first ) {
$class[] = 'wp-first-item';
$first = false;
}
$submenu_items = array();
if ( ! empty( $submenu[ $item[2] ] ) ) {
$class[] = 'wp-has-submenu';
$submenu_items = $submenu[ $item[2] ];
}
if ( ( $parent_file && $item[2] === $parent_file ) || ( empty( $typenow ) && $self === $item[2] ) ) {
if ( ! empty( $submenu_items ) ) {
$class[] = 'wp-has-current-submenu wp-menu-open';
} else {
$class[] = 'current';
$aria_attributes .= 'aria-current="page"';
}
} else {
$class[] = 'wp-not-current-submenu';
if ( ! empty( $submenu_items ) ) {
$aria_attributes .= 'aria-haspopup="true"';
}
}
if ( ! empty( $item[4] ) ) {
$class[] = esc_attr( $item[4] );
}
$class = $class ? ' class="' . implode( ' ', $class ) . '"' : '';
$id = ! empty( $item[5] ) ? ' id="' . preg_replace( '|[^a-zA-Z0-9_:.]|', '-', $item[5] ) . '"' : '';
$img = '';
$img_style = '';
$img_class = ' dashicons-before';
if ( false !== strpos( $class, 'wp-menu-separator' ) ) {
$is_separator = true;
}
/*
* If the string 'none' (previously 'div') is passed instead of a URL, don't output
* the default menu image so an icon can be added to div.wp-menu-image as background
* with CSS. Dashicons and base64-encoded data:image/svg_xml URIs are also handled
* as special cases.
*/
if ( ! empty( $item[6] ) ) {
$img = '<img src="' . esc_url( $item[6] ) . '" alt="" />';
if ( 'none' === $item[6] || 'div' === $item[6] ) {
$img = '<br />';
} elseif ( 0 === strpos( $item[6], 'data:image/svg+xml;base64,' ) ) {
$img = '<br />';
// The value is base64-encoded data, so esc_attr() is used here instead of esc_url().
$img_style = ' style="background-image:url('' . esc_attr( $item[6] ) . '')"';
$img_class = ' svg';
} elseif ( 0 === strpos( $item[6], 'dashicons-' ) ) {
$img = '<br />';
$img_class = ' dashicons-before ' . sanitize_html_class( $item[6] );
}
}
$arrow = '<div class="wp-menu-arrow"><div></div></div>';
$title = wptexturize( $item[0] );
// Hide separators from screen readers.
if ( $is_separator ) {
$aria_hidden = ' aria-hidden="true"';
}
echo "nt<li$class$id$aria_hidden>";
if ( $is_separator ) {
echo '<div class="separator"></div>';
} elseif ( $submenu_as_parent && ! empty( $submenu_items ) ) {
$submenu_items = array_values( $submenu_items ); // Re-index.
$menu_hook = get_plugin_page_hook( $submenu_items[0][2], $item[2] );
$menu_file = $submenu_items[0][2];
$pos = strpos( $menu_file, '?' );
if ( false !== $pos ) {
$menu_file = substr( $menu_file, 0, $pos );
}
if ( ! empty( $menu_hook )
|| ( ( 'index.php' !== $submenu_items[0][2] )
&& file_exists( WP_PLUGIN_DIR . "/$menu_file" )
&& ! file_exists( ABSPATH . "/wp-admin/$menu_file" ) )
) {
$admin_is_parent = true;
echo "<a href='admin.php?page={$submenu_items[0][2]}'$class $aria_attributes>$arrow<div class='wp-menu-image$img_class'$img_style aria-hidden='true'>$img</div><div class='wp-menu-name'>$title</div></a>";
} else {
echo "nt<a href='{$submenu_items[0][2]}'$class $aria_attributes>$arrow<div class='wp-menu-image$img_class'$img_style aria-hidden='true'>$img</div><div class='wp-menu-name'>$title</div></a>";
}
} elseif ( ! empty( $item[2] ) && current_user_can( $item[1] ) ) {
$menu_hook = get_plugin_page_hook( $item[2], 'admin.php' );
$menu_file = $item[2];
$pos = strpos( $menu_file, '?' );
if ( false !== $pos ) {
$menu_file = substr( $menu_file, 0, $pos );
}
if ( ! empty( $menu_hook )
|| ( ( 'index.php' !== $item[2] )
&& file_exists( WP_PLUGIN_DIR . "/$menu_file" )
&& ! file_exists( ABSPATH . "/wp-admin/$menu_file" ) )
) {
$admin_is_parent = true;
echo "nt<a href='admin.php?page={$item[2]}'$class $aria_attributes>$arrow<div class='wp-menu-image$img_class'$img_style aria-hidden='true'>$img</div><div class='wp-menu-name'>{$item[0]}</div></a>";
} else {
echo "nt<a href='{$item[2]}'$class $aria_attributes>$arrow<div class='wp-menu-image$img_class'$img_style aria-hidden='true'>$img</div><div class='wp-menu-name'>{$item[0]}</div></a>";
}
}
if ( ! empty( $submenu_items ) ) {
echo "nt<ul class='wp-submenu wp-submenu-wrap'>";
echo "<li class='wp-submenu-head' aria-hidden='true'>{$item[0]}</li>";
$first = true;
// 0 = menu_title, 1 = capability, 2 = menu_slug, 3 = page_title, 4 = classes.
foreach ( $submenu_items as $sub_key => $sub_item ) {
if ( ! current_user_can( $sub_item[1] ) ) {
continue;
}
$class = array();
$aria_attributes = '';
if ( $first ) {
$class[] = 'wp-first-item';
$first = false;
}
$menu_file = $item[2];
$pos = strpos( $menu_file, '?' );
if ( false !== $pos ) {
$menu_file = substr( $menu_file, 0, $pos );
}
// Handle current for post_type=post|page|foo pages, which won't match $self.
$self_type = ! empty( $typenow ) ? $self . '?post_type=' . $typenow : 'nothing';
if ( isset( $submenu_file ) ) {
if ( $submenu_file === $sub_item[2] ) {
$class[] = 'current';
$aria_attributes .= ' aria-current="page"';
}
// If plugin_page is set the parent must either match the current page or not physically exist.
// This allows plugin pages with the same hook to exist under different parents.
} elseif (
( ! isset( $plugin_page ) && $self === $sub_item[2] )
|| ( isset( $plugin_page ) && $plugin_page === $sub_item[2]
&& ( $item[2] === $self_type || $item[2] === $self || file_exists( $menu_file ) === false ) )
) {
$class[] = 'current';
$aria_attributes .= ' aria-current="page"';
}
if ( ! empty( $sub_item[4] ) ) {
$class[] = esc_attr( $sub_item[4] );
}
$class = $class ? ' class="' . implode( ' ', $class ) . '"' : '';
$menu_hook = get_plugin_page_hook( $sub_item[2], $item[2] );
$sub_file = $sub_item[2];
$pos = strpos( $sub_file, '?' );
if ( false !== $pos ) {
$sub_file = substr( $sub_file, 0, $pos );
}
$title = wptexturize( $sub_item[0] );
if ( ! empty( $menu_hook )
|| ( ( 'index.php' !== $sub_item[2] )
&& file_exists( WP_PLUGIN_DIR . "/$sub_file" )
&& ! file_exists( ABSPATH . "/wp-admin/$sub_file" ) )
) {
// If admin.php is the current page or if the parent exists as a file in the plugins or admin directory.
if ( ( ! $admin_is_parent && file_exists( WP_PLUGIN_DIR . "/$menu_file" ) && ! is_dir( WP_PLUGIN_DIR . "/{$item[2]}" ) ) || file_exists( $menu_file ) ) {
$sub_item_url = add_query_arg( array( 'page' => $sub_item[2] ), $item[2] );
} else {
$sub_item_url = add_query_arg( array( 'page' => $sub_item[2] ), 'admin.php' );
}
$sub_item_url = esc_url( $sub_item_url );
echo "<li$class><a href='$sub_item_url'$class$aria_attributes>$title</a></li>";
} else {
echo "<li$class><a href='{$sub_item[2]}'$class$aria_attributes>$title</a></li>";
}
}
echo '</ul>';
}
echo '</li>';
}
echo '<li id="collapse-menu" class="hide-if-no-js">' .
'<button type="button" id="collapse-button" aria-label="' . esc_attr__( 'Collapse Main menu' ) . '" aria-expanded="true">' .
'<span class="collapse-button-icon" aria-hidden="true"></span>' .
'<span class="collapse-button-label">' . __( 'Collapse menu' ) . '</span>' .
'</button></li>';
}
function _wp_menu_output( $menu, $submenu, $submenu_as_parent = true ) { global $self, $parent_file, $submenu_file, $plugin_page, $typenow; $first = true; // 0 = menu_title, 1 = capability, 2 = menu_slug, 3 = page_title, 4 = classes, 5 = hookname, 6 = icon_url. foreach ( $menu as $key => $item ) { $admin_is_parent = false; $class = array(); $aria_attributes = ''; $aria_hidden = ''; $is_separator = false; if ( $first ) { $class[] = 'wp-first-item'; $first = false; } $submenu_items = array(); if ( ! empty( $submenu[ $item[2] ] ) ) { $class[] = 'wp-has-submenu'; $submenu_items = $submenu[ $item[2] ]; } if ( ( $parent_file && $item[2] === $parent_file ) || ( empty( $typenow ) && $self === $item[2] ) ) { if ( ! empty( $submenu_items ) ) { $class[] = 'wp-has-current-submenu wp-menu-open'; } else { $class[] = 'current'; $aria_attributes .= 'aria-current="page"'; } } else { $class[] = 'wp-not-current-submenu'; if ( ! empty( $submenu_items ) ) { $aria_attributes .= 'aria-haspopup="true"'; } } if ( ! empty( $item[4] ) ) { $class[] = esc_attr( $item[4] ); } $class = $class ? ' class="' . implode( ' ', $class ) . '"' : ''; $id = ! empty( $item[5] ) ? ' id="' . preg_replace( '|[^a-zA-Z0-9_:.]|', '-', $item[5] ) . '"' : ''; $img = ''; $img_style = ''; $img_class = ' dashicons-before'; if ( false !== strpos( $class, 'wp-menu-separator' ) ) { $is_separator = true; } /* * If the string 'none' (previously 'div') is passed instead of a URL, don't output * the default menu image so an icon can be added to div.wp-menu-image as background * with CSS. Dashicons and base64-encoded data:image/svg_xml URIs are also handled * as special cases. */ if ( ! empty( $item[6] ) ) { $img = '<img src="' . esc_url( $item[6] ) . '" alt="" />'; if ( 'none' === $item[6] || 'div' === $item[6] ) { $img = '<br />'; } elseif ( 0 === strpos( $item[6], 'data:image/svg+xml;base64,' ) ) { $img = '<br />'; // The value is base64-encoded data, so esc_attr() is used here instead of esc_url(). $img_style = ' style="background-image:url('' . esc_attr( $item[6] ) . '')"'; $img_class = ' svg'; } elseif ( 0 === strpos( $item[6], 'dashicons-' ) ) { $img = '<br />'; $img_class = ' dashicons-before ' . sanitize_html_class( $item[6] ); } } $arrow = '<div class="wp-menu-arrow"><div></div></div>'; $title = wptexturize( $item[0] ); // Hide separators from screen readers. if ( $is_separator ) { $aria_hidden = ' aria-hidden="true"'; } echo "nt<li$class$id$aria_hidden>"; if ( $is_separator ) { echo '<div class="separator"></div>'; } elseif ( $submenu_as_parent && ! empty( $submenu_items ) ) { $submenu_items = array_values( $submenu_items ); // Re-index. $menu_hook = get_plugin_page_hook( $submenu_items[0][2], $item[2] ); $menu_file = $submenu_items[0][2]; $pos = strpos( $menu_file, '?' ); if ( false !== $pos ) { $menu_file = substr( $menu_file, 0, $pos ); } if ( ! empty( $menu_hook ) || ( ( 'index.php' !== $submenu_items[0][2] ) && file_exists( WP_PLUGIN_DIR . "/$menu_file" ) && ! file_exists( ABSPATH . "/wp-admin/$menu_file" ) ) ) { $admin_is_parent = true; echo "<a href='admin.php?page={$submenu_items[0][2]}'$class $aria_attributes>$arrow<div class='wp-menu-image$img_class'$img_style aria-hidden='true'>$img</div><div class='wp-menu-name'>$title</div></a>"; } else { echo "nt<a href='{$submenu_items[0][2]}'$class $aria_attributes>$arrow<div class='wp-menu-image$img_class'$img_style aria-hidden='true'>$img</div><div class='wp-menu-name'>$title</div></a>"; } } elseif ( ! empty( $item[2] ) && current_user_can( $item[1] ) ) { $menu_hook = get_plugin_page_hook( $item[2], 'admin.php' ); $menu_file = $item[2]; $pos = strpos( $menu_file, '?' ); if ( false !== $pos ) { $menu_file = substr( $menu_file, 0, $pos ); } if ( ! empty( $menu_hook ) || ( ( 'index.php' !== $item[2] ) && file_exists( WP_PLUGIN_DIR . "/$menu_file" ) && ! file_exists( ABSPATH . "/wp-admin/$menu_file" ) ) ) { $admin_is_parent = true; echo "nt<a href='admin.php?page={$item[2]}'$class $aria_attributes>$arrow<div class='wp-menu-image$img_class'$img_style aria-hidden='true'>$img</div><div class='wp-menu-name'>{$item[0]}</div></a>"; } else { echo "nt<a href='{$item[2]}'$class $aria_attributes>$arrow<div class='wp-menu-image$img_class'$img_style aria-hidden='true'>$img</div><div class='wp-menu-name'>{$item[0]}</div></a>"; } } if ( ! empty( $submenu_items ) ) { echo "nt<ul class='wp-submenu wp-submenu-wrap'>"; echo "<li class='wp-submenu-head' aria-hidden='true'>{$item[0]}</li>"; $first = true; // 0 = menu_title, 1 = capability, 2 = menu_slug, 3 = page_title, 4 = classes. foreach ( $submenu_items as $sub_key => $sub_item ) { if ( ! current_user_can( $sub_item[1] ) ) { continue; } $class = array(); $aria_attributes = ''; if ( $first ) { $class[] = 'wp-first-item'; $first = false; } $menu_file = $item[2]; $pos = strpos( $menu_file, '?' ); if ( false !== $pos ) { $menu_file = substr( $menu_file, 0, $pos ); } // Handle current for post_type=post|page|foo pages, which won't match $self. $self_type = ! empty( $typenow ) ? $self . '?post_type=' . $typenow : 'nothing'; if ( isset( $submenu_file ) ) { if ( $submenu_file === $sub_item[2] ) { $class[] = 'current'; $aria_attributes .= ' aria-current="page"'; } // If plugin_page is set the parent must either match the current page or not physically exist. // This allows plugin pages with the same hook to exist under different parents. } elseif ( ( ! isset( $plugin_page ) && $self === $sub_item[2] ) || ( isset( $plugin_page ) && $plugin_page === $sub_item[2] && ( $item[2] === $self_type || $item[2] === $self || file_exists( $menu_file ) === false ) ) ) { $class[] = 'current'; $aria_attributes .= ' aria-current="page"'; } if ( ! empty( $sub_item[4] ) ) { $class[] = esc_attr( $sub_item[4] ); } $class = $class ? ' class="' . implode( ' ', $class ) . '"' : ''; $menu_hook = get_plugin_page_hook( $sub_item[2], $item[2] ); $sub_file = $sub_item[2]; $pos = strpos( $sub_file, '?' ); if ( false !== $pos ) { $sub_file = substr( $sub_file, 0, $pos ); } $title = wptexturize( $sub_item[0] ); if ( ! empty( $menu_hook ) || ( ( 'index.php' !== $sub_item[2] ) && file_exists( WP_PLUGIN_DIR . "/$sub_file" ) && ! file_exists( ABSPATH . "/wp-admin/$sub_file" ) ) ) { // If admin.php is the current page or if the parent exists as a file in the plugins or admin directory. if ( ( ! $admin_is_parent && file_exists( WP_PLUGIN_DIR . "/$menu_file" ) && ! is_dir( WP_PLUGIN_DIR . "/{$item[2]}" ) ) || file_exists( $menu_file ) ) { $sub_item_url = add_query_arg( array( 'page' => $sub_item[2] ), $item[2] ); } else { $sub_item_url = add_query_arg( array( 'page' => $sub_item[2] ), 'admin.php' ); } $sub_item_url = esc_url( $sub_item_url ); echo "<li$class><a href='$sub_item_url'$class$aria_attributes>$title</a></li>"; } else { echo "<li$class><a href='{$sub_item[2]}'$class$aria_attributes>$title</a></li>"; } } echo '</ul>'; } echo '</li>'; } echo '<li id="collapse-menu" class="hide-if-no-js">' . '<button type="button" id="collapse-button" aria-label="' . esc_attr__( 'Collapse Main menu' ) . '" aria-expanded="true">' . '<span class="collapse-button-icon" aria-hidden="true"></span>' . '<span class="collapse-button-label">' . __( 'Collapse menu' ) . '</span>' . '</button></li>'; }
function _wp_menu_output( $menu, $submenu, $submenu_as_parent = true ) {
	global $self, $parent_file, $submenu_file, $plugin_page, $typenow;

	$first = true;
	// 0 = menu_title, 1 = capability, 2 = menu_slug, 3 = page_title, 4 = classes, 5 = hookname, 6 = icon_url.
	foreach ( $menu as $key => $item ) {
		$admin_is_parent = false;
		$class           = array();
		$aria_attributes = '';
		$aria_hidden     = '';
		$is_separator    = false;

		if ( $first ) {
			$class[] = 'wp-first-item';
			$first   = false;
		}

		$submenu_items = array();
		if ( ! empty( $submenu[ $item[2] ] ) ) {
			$class[]       = 'wp-has-submenu';
			$submenu_items = $submenu[ $item[2] ];
		}

		if ( ( $parent_file && $item[2] === $parent_file ) || ( empty( $typenow ) && $self === $item[2] ) ) {
			if ( ! empty( $submenu_items ) ) {
				$class[] = 'wp-has-current-submenu wp-menu-open';
			} else {
				$class[]          = 'current';
				$aria_attributes .= 'aria-current="page"';
			}
		} else {
			$class[] = 'wp-not-current-submenu';
			if ( ! empty( $submenu_items ) ) {
				$aria_attributes .= 'aria-haspopup="true"';
			}
		}

		if ( ! empty( $item[4] ) ) {
			$class[] = esc_attr( $item[4] );
		}

		$class     = $class ? ' class="' . implode( ' ', $class ) . '"' : '';
		$id        = ! empty( $item[5] ) ? ' id="' . preg_replace( '|[^a-zA-Z0-9_:.]|', '-', $item[5] ) . '"' : '';
		$img       = '';
		$img_style = '';
		$img_class = ' dashicons-before';

		if ( false !== strpos( $class, 'wp-menu-separator' ) ) {
			$is_separator = true;
		}

		/*
		 * If the string 'none' (previously 'div') is passed instead of a URL, don't output
		 * the default menu image so an icon can be added to div.wp-menu-image as background
		 * with CSS. Dashicons and base64-encoded data:image/svg_xml URIs are also handled
		 * as special cases.
		 */
		if ( ! empty( $item[6] ) ) {
			$img = '<img src="' . esc_url( $item[6] ) . '" alt="" />';

			if ( 'none' === $item[6] || 'div' === $item[6] ) {
				$img = '<br />';
			} elseif ( 0 === strpos( $item[6], 'data:image/svg+xml;base64,' ) ) {
				$img = '<br />';
				// The value is base64-encoded data, so esc_attr() is used here instead of esc_url().
				$img_style = ' style="background-image:url('' . esc_attr( $item[6] ) . '')"';
				$img_class = ' svg';
			} elseif ( 0 === strpos( $item[6], 'dashicons-' ) ) {
				$img       = '<br />';
				$img_class = ' dashicons-before ' . sanitize_html_class( $item[6] );
			}
		}
		$arrow = '<div class="wp-menu-arrow"><div></div></div>';

		$title = wptexturize( $item[0] );

		// Hide separators from screen readers.
		if ( $is_separator ) {
			$aria_hidden = ' aria-hidden="true"';
		}

		echo "nt<li$class$id$aria_hidden>";

		if ( $is_separator ) {
			echo '<div class="separator"></div>';
		} elseif ( $submenu_as_parent && ! empty( $submenu_items ) ) {
			$submenu_items = array_values( $submenu_items );  // Re-index.
			$menu_hook     = get_plugin_page_hook( $submenu_items[0][2], $item[2] );
			$menu_file     = $submenu_items[0][2];
			$pos           = strpos( $menu_file, '?' );

			if ( false !== $pos ) {
				$menu_file = substr( $menu_file, 0, $pos );
			}

			if ( ! empty( $menu_hook )
				|| ( ( 'index.php' !== $submenu_items[0][2] )
					&& file_exists( WP_PLUGIN_DIR . "/$menu_file" )
					&& ! file_exists( ABSPATH . "/wp-admin/$menu_file" ) )
			) {
				$admin_is_parent = true;
				echo "<a href='admin.php?page={$submenu_items[0][2]}'$class $aria_attributes>$arrow<div class='wp-menu-image$img_class'$img_style aria-hidden='true'>$img</div><div class='wp-menu-name'>$title</div></a>";
			} else {
				echo "nt<a href='{$submenu_items[0][2]}'$class $aria_attributes>$arrow<div class='wp-menu-image$img_class'$img_style aria-hidden='true'>$img</div><div class='wp-menu-name'>$title</div></a>";
			}
		} elseif ( ! empty( $item[2] ) && current_user_can( $item[1] ) ) {
			$menu_hook = get_plugin_page_hook( $item[2], 'admin.php' );
			$menu_file = $item[2];
			$pos       = strpos( $menu_file, '?' );

			if ( false !== $pos ) {
				$menu_file = substr( $menu_file, 0, $pos );
			}

			if ( ! empty( $menu_hook )
				|| ( ( 'index.php' !== $item[2] )
					&& file_exists( WP_PLUGIN_DIR . "/$menu_file" )
					&& ! file_exists( ABSPATH . "/wp-admin/$menu_file" ) )
			) {
				$admin_is_parent = true;
				echo "nt<a href='admin.php?page={$item[2]}'$class $aria_attributes>$arrow<div class='wp-menu-image$img_class'$img_style aria-hidden='true'>$img</div><div class='wp-menu-name'>{$item[0]}</div></a>";
			} else {
				echo "nt<a href='{$item[2]}'$class $aria_attributes>$arrow<div class='wp-menu-image$img_class'$img_style aria-hidden='true'>$img</div><div class='wp-menu-name'>{$item[0]}</div></a>";
			}
		}

		if ( ! empty( $submenu_items ) ) {
			echo "nt<ul class='wp-submenu wp-submenu-wrap'>";
			echo "<li class='wp-submenu-head' aria-hidden='true'>{$item[0]}</li>";

			$first = true;

			// 0 = menu_title, 1 = capability, 2 = menu_slug, 3 = page_title, 4 = classes.
			foreach ( $submenu_items as $sub_key => $sub_item ) {
				if ( ! current_user_can( $sub_item[1] ) ) {
					continue;
				}

				$class           = array();
				$aria_attributes = '';

				if ( $first ) {
					$class[] = 'wp-first-item';
					$first   = false;
				}

				$menu_file = $item[2];
				$pos       = strpos( $menu_file, '?' );

				if ( false !== $pos ) {
					$menu_file = substr( $menu_file, 0, $pos );
				}

				// Handle current for post_type=post|page|foo pages, which won't match $self.
				$self_type = ! empty( $typenow ) ? $self . '?post_type=' . $typenow : 'nothing';

				if ( isset( $submenu_file ) ) {
					if ( $submenu_file === $sub_item[2] ) {
						$class[]          = 'current';
						$aria_attributes .= ' aria-current="page"';
					}
					// If plugin_page is set the parent must either match the current page or not physically exist.
					// This allows plugin pages with the same hook to exist under different parents.
				} elseif (
					( ! isset( $plugin_page ) && $self === $sub_item[2] )
					|| ( isset( $plugin_page ) && $plugin_page === $sub_item[2]
						&& ( $item[2] === $self_type || $item[2] === $self || file_exists( $menu_file ) === false ) )
				) {
					$class[]          = 'current';
					$aria_attributes .= ' aria-current="page"';
				}

				if ( ! empty( $sub_item[4] ) ) {
					$class[] = esc_attr( $sub_item[4] );
				}

				$class = $class ? ' class="' . implode( ' ', $class ) . '"' : '';

				$menu_hook = get_plugin_page_hook( $sub_item[2], $item[2] );
				$sub_file  = $sub_item[2];
				$pos       = strpos( $sub_file, '?' );
				if ( false !== $pos ) {
					$sub_file = substr( $sub_file, 0, $pos );
				}

				$title = wptexturize( $sub_item[0] );

				if ( ! empty( $menu_hook )
					|| ( ( 'index.php' !== $sub_item[2] )
						&& file_exists( WP_PLUGIN_DIR . "/$sub_file" )
						&& ! file_exists( ABSPATH . "/wp-admin/$sub_file" ) )
				) {
					// If admin.php is the current page or if the parent exists as a file in the plugins or admin directory.
					if ( ( ! $admin_is_parent && file_exists( WP_PLUGIN_DIR . "/$menu_file" ) && ! is_dir( WP_PLUGIN_DIR . "/{$item[2]}" ) ) || file_exists( $menu_file ) ) {
						$sub_item_url = add_query_arg( array( 'page' => $sub_item[2] ), $item[2] );
					} else {
						$sub_item_url = add_query_arg( array( 'page' => $sub_item[2] ), 'admin.php' );
					}

					$sub_item_url = esc_url( $sub_item_url );
					echo "<li$class><a href='$sub_item_url'$class$aria_attributes>$title</a></li>";
				} else {
					echo "<li$class><a href='{$sub_item[2]}'$class$aria_attributes>$title</a></li>";
				}
			}
			echo '</ul>';
		}
		echo '</li>';
	}

	echo '<li id="collapse-menu" class="hide-if-no-js">' .
		'<button type="button" id="collapse-button" aria-label="' . esc_attr__( 'Collapse Main menu' ) . '" aria-expanded="true">' .
		'<span class="collapse-button-icon" aria-hidden="true"></span>' .
		'<span class="collapse-button-label">' . __( 'Collapse menu' ) . '</span>' .
		'</button></li>';
}

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