WP_Privacy_Policy_Content::text_change_check()

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_Privacy_Policy_Content::text_change_check() 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

Heavy

Reads stored settings via get_option(), cached per request but not free on a cold cache.

Scaling

Scales with input

The body loops, so the work grows with how much data it finds.

Instructions

7–53

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 73.

Plugin surface

None

Nothing here hands control to plugin code.

Called by

0

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

What it touches

• optionoption read or writeget_option()called directly
• hookthird-party callbacksapply_filters()one call below WP_Privacy_Policy_Content::text_change_check()
• cacheobject cachewp_cache_get()one call below WP_Privacy_Policy_Content::text_change_check()
• serializeserialisationmaybe_unserialize()one call below WP_Privacy_Policy_Content::text_change_check()

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

What one call costs · 8 distinct outcomes

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

Uses · 6

• get_option()Retrieves an option value based on an option name.
• current_user_can()Returns whether the current user has the specified capability.
• get_post_meta()Retrieves a post meta field for the given post ID.
• did_action()Retrieves the number of times an action has been fired during the current request.
• add_action()Adds a callback function to an action hook.
• update_option()Updates the value of an option that was already added.

Source code

View on Trac ↗View on GitHub ↗

56	public static function text_change_check() {57 58		$policy_page_id = (int) get_option( 'wp_page_for_privacy_policy' );59 60		// The site doesn't have a privacy policy.61		if ( empty( $policy_page_id ) ) {62			return false;63		}64 65		if ( ! current_user_can( 'edit_post', $policy_page_id ) ) {66			return false;67		}68 69		$old = (array) get_post_meta( $policy_page_id, '_wp_suggested_privacy_policy_content' );70 71		// Updates are not relevant if the user has not reviewed any suggestions yet.72		if ( empty( $old ) ) {73			return false;74		}75 76		$cached = get_option( '_wp_suggested_policy_text_has_changed' );77 78		/*79		 * When this function is called before `admin_init`, `self::$policy_content`80		 * has not been populated yet, so use the cached result from the last81		 * execution instead.82		 */83		if ( ! did_action( 'admin_init' ) ) {84			return 'changed' === $cached;85		}86 87		$new = self::$policy_content;88 89		// Remove the extra values added to the meta.90		foreach ( $old as $key => $data ) {91			if ( ! is_array( $data ) || ! empty( $data['removed'] ) ) {92				unset( $old[ $key ] );93				continue;94			}95 96			$old[ $key ] = array(97				'plugin_name' => $data['plugin_name'],98				'policy_text' => $data['policy_text'],99			);100		}101 102		// Normalize the order of texts, to facilitate comparison.103		sort( $old );104		sort( $new );105 106		/*107		 * The == operator (equal, not identical) was used intentionally.108		 * See https://www.php.net/manual/en/language.operators.array.php109		 */110		if ( $new != $old ) {111			/*112			 * A plugin was activated or deactivated, or some policy text has changed.113			 * Show a notice on the relevant screens to inform the admin.114			 */115			add_action( 'admin_notices', array( 'WP_Privacy_Policy_Content', 'policy_text_changed_notice' ) );116			$state = 'changed';117		} else {118			$state = 'not-changed';119		}120 121		// Cache the result for use before `admin_init` (see above).122		if ( $cached !== $state ) {123			update_option( '_wp_suggested_policy_text_has_changed', $state, false );124		}125 126		return 'changed' === $state;127	}

Changelog

Introduced in 4.9.6. 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 7.1.0 tag, from src/wp-admin/includes/class-wp-privacy-policy-content.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

Corrections

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