upgrade_350()

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 upgrade_350() 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

Reaches the database via ->get_var().

Scaling

Scales with input

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

Instructions

9–61

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 70.

Plugin surface

None

Nothing here hands control to plugin code.

Called by

1

1 place in core call this, so the cost is paid more often than your own code shows.

What it touches

• optionoption read or writeupdate_option()called directly
• sqldatabase query->get_var()called directly
• hookthird-party callbacksapply_filters()one call below upgrade_350()
• serializeserialisationmaybe_serialize()one call below upgrade_350()
• cacheobject cachewp_cache_get()one call below upgrade_350()
• querycontent queryget_term()one call below upgrade_350()

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

What one call costs · 36 distinct outcomes

One number would be a lie: the work depends on which branch runs. These are every distinct cost upgrade_350() can have, taken from its control-flow graph on PHP 8.5.

Uses · 7

• update_option()Updates the value of an option that was already added.
• wp_should_upgrade_global_tables()Determine if global tables should be upgraded.
• get_post_types()Gets a list of all registered post type objects.
• get_taxonomies()Retrieves a list of registered taxonomy names or objects.
• str_contains()Polyfill for `str_contains()` function added in PHP 8.0.
• get_term_by()Gets all term data from database by term field and data.
• wp_delete_term()Removes a term from the database.

Used by · 1

• upgrade_all()Functions to be called in installation and upgrade scripts.

Source code

View on Trac ↗View on GitHub ↗

1882function upgrade_350() {1883	global $wp_current_db_version, $wpdb;1884 1885	if ( $wp_current_db_version < 22006 && $wpdb->get_var( "SELECT link_id FROM $wpdb->links LIMIT 1" ) ) {1886		update_option( 'link_manager_enabled', 1 ); // Previously set to 0 by populate_options().1887	}1888 1889	if ( $wp_current_db_version < 21811 && wp_should_upgrade_global_tables() ) {1890		$meta_keys = array();1891		foreach ( array_merge( get_post_types(), get_taxonomies() ) as $name ) {1892			if ( str_contains( $name, '-' ) ) {1893				$meta_keys[] = 'edit_' . str_replace( '-', '_', $name ) . '_per_page';1894			}1895		}1896		if ( $meta_keys ) {1897			$meta_keys = implode( "', '", $meta_keys );1898			$wpdb->query( "DELETE FROM $wpdb->usermeta WHERE meta_key IN ('$meta_keys')" );1899		}1900	}1901 1902	if ( $wp_current_db_version < 22422 ) {1903		$term = get_term_by( 'slug', 'post-format-standard', 'post_format' );1904		if ( $term ) {1905			wp_delete_term( $term->term_id, 'post_format' );1906		}1907	}1908}

Changelog

Introduced in 3.5.0. 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 7.1.0 tag, from src/wp-admin/includes/upgrade.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

Corrections

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