wp_dashboard_browser_nag()

Compatibility

Present in every tracked release (6.7.7 to 7.1.0), and compiles on PHP 7.4 through 8.6-dev.

Performance profile

How much work a call to wp_dashboard_browser_nag() does, and what it touches: the algorithmic scaling, the Zend instruction count per call across PHP versions, the hooks it hands control to, and the core code that calls it. Measured from the compiled opcodes, not a stopwatch, so every number is identical on any machine running the same PHP version, and every function in core is ranked by cost.

Cost class

Expensive

Reaches an outbound HTTP request via wp_remote_post().

Scaling

Constant

No loop in the body: the same number of instructions runs whatever you pass in.

Instructions

13–115

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 156.

Plugin surface

1 hook

Third-party callbacks on 'browse-happy-notice' run inside this call, and their cost is not bounded by anything here.

Called by

0

Nothing in core calls this; the cost is only what you spend yourself.

What it touches

• hookthird-party callbacksapply_filters()called directly
• transienttransientget_site_transient()one call below wp_dashboard_browser_nag()
• httpoutbound HTTP requestwp_remote_post()one call below wp_dashboard_browser_nag()
• querycontent queryget_user_by()one call below wp_dashboard_browser_nag()

Further down the call graph this can also reach cache, option and serialize. Those are the worst case, several calls deep and usually down an error path, not what a normal call pays.

What one call costs · 17 distinct outcomes

One number would be a lie: the work depends on which branch runs. These are every distinct cost wp_dashboard_browser_nag() can have, taken from its control-flow graph on PHP 8.5.

Hooks and filters fired · 1

One hook fires while wp_dashboard_browser_nag() runs, in this order:

1. 1
   apply_filters( browse-happy-notice )filterline 1780 (+68 into the body)

   Filters the notice output for the 'Browse Happy' nag meta box.

Uses · 10

• wp_check_browser_version()Checks if the user needs a browser update.
• __()Retrieves the translation of $text.
• esc_url()Checks and cleans a URL.
• esc_html()Escaping for HTML blocks.
• is_ssl()Determines if SSL is used.
• get_user_locale()Retrieves the locale of a user.
• add_query_arg()Retrieves a modified URL query string.
• esc_attr()Escaping for HTML attributes.
• esc_attr__()Retrieves the translation of $text and escapes it for safe use in an attribute.
• apply_filters()Calls the callback functions that have been added to a filter hook.

Source code

View on Trac ↗View on GitHub ↗

1712function wp_dashboard_browser_nag() {1713	global $is_IE;1714 1715	$notice   = '';1716	$response = wp_check_browser_version();1717 1718	if ( $response ) {1719		if ( $is_IE ) {1720			$msg = __( 'Internet Explorer does not give you the best WordPress experience. Switch to Microsoft Edge, or another more modern browser to get the most from your site.' );1721		} elseif ( $response['insecure'] ) {1722			$msg = sprintf(1723				/* translators: %s: Browser name and link. */1724				__( "It looks like you're using an insecure version of %s. Using an outdated browser makes your computer unsafe. For the best WordPress experience, please update your browser." ),1725				sprintf( '<a href="%s">%s</a>', esc_url( $response['update_url'] ), esc_html( $response['name'] ) )1726			);1727		} else {1728			$msg = sprintf(1729				/* translators: %s: Browser name and link. */1730				__( "It looks like you're using an old version of %s. For the best WordPress experience, please update your browser." ),1731				sprintf( '<a href="%s">%s</a>', esc_url( $response['update_url'] ), esc_html( $response['name'] ) )1732			);1733		}1734 1735		$browser_nag_class = '';1736		if ( ! empty( $response['img_src'] ) ) {1737			$img_src = ( is_ssl() && ! empty( $response['img_src_ssl'] ) ) ? $response['img_src_ssl'] : $response['img_src'];1738 1739			$notice           .= '<div class="alignright browser-icon"><img src="' . esc_url( $img_src ) . '" alt="" /></div>';1740			$browser_nag_class = ' has-browser-icon';1741		}1742		$notice .= "<p class='browser-update-nag{$browser_nag_class}'>{$msg}</p>";1743 1744		$browsehappy = 'https://browsehappy.com/';1745		$locale      = get_user_locale();1746		if ( 'en_US' !== $locale ) {1747			$browsehappy = add_query_arg( 'locale', $locale, $browsehappy );1748		}1749 1750		if ( $is_IE ) {1751			$msg_browsehappy = sprintf(1752				/* translators: %s: Browse Happy URL. */1753				__( 'Learn how to <a href="%s" class="update-browser-link">browse happy</a>' ),1754				esc_url( $browsehappy )1755			);1756		} else {1757			$msg_browsehappy = sprintf(1758				/* translators: 1: Browser update URL, 2: Browser name, 3: Browse Happy URL. */1759				__( '<a href="%1$s" class="update-browser-link">Update %2$s</a> or learn how to <a href="%3$s" class="browse-happy-link">browse happy</a>' ),1760				esc_attr( $response['update_url'] ),1761				esc_html( $response['name'] ),1762				esc_url( $browsehappy )1763			);1764		}1765 1766		$notice .= '<p>' . $msg_browsehappy . '</p>';1767		$notice .= '<p class="hide-if-no-js"><a href="" class="dismiss" aria-label="' . esc_attr__( 'Dismiss the browser warning panel' ) . '">' . __( 'Dismiss' ) . '</a></p>';1768		$notice .= '<div class="clear"></div>';1769	}1770 1771	/**1772	 * Filters the notice output for the 'Browse Happy' nag meta box.1773	 *1774	 * @since 3.2.01775	 *1776	 * @param string      $notice   The notice content.1777	 * @param array|false $response An array containing web browser information, or1778	 *                              false on failure. See wp_check_browser_version().1779	 */1780	echo apply_filters( 'browse-happy-notice', $notice, $response ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores1781}

Changelog

Introduced in 3.2.0. Unchanged from 6.7.7 through 7.1.0.

1. 6.7.7
2. 6.8.8
3. 6.9.7
4. 7.0.4
5. 7.1.0

Signature, return type and hooks compared across 5 parsed releases.

About this page

Parsed data

Generated from the wordpress-develop 6.9.7 tag, from src/wp-admin/includes/dashboard.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

Corrections

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