upgrade_230()

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_230() 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_results().

Scaling

Scales with input

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

Instructions

54–84

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 480.

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_results()called directly
• hookthird-party callbacksapply_filters()one call below upgrade_230()
• serializeserialisationmaybe_serialize()one call below upgrade_230()
• cacheobject cachewp_cache_get()one call below upgrade_230()

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 upgrade_230() can have, taken from its control-flow graph on PHP 8.5.

This body has more branch combinations than are worth enumerating, so the table covers the outcomes found first rather than every one that exists.

Uses · 4

• populate_roles_230()Create and modify WordPress roles for WordPress 2.3.
• wp_slash()Adds slashes to a string or recursively adds slashes to strings within an array.
• sanitize_title()Sanitizes a string into a slug, which can be used in URLs or HTML attributes.
• update_option()Updates the value of an option that was already added.

Used by · 1

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

Source code

View on Trac ↗View on GitHub ↗

1313function upgrade_230() {1314	global $wp_current_db_version, $wpdb;1315 1316	if ( $wp_current_db_version < 5200 ) {1317		populate_roles_230();1318	}1319 1320	// Convert categories to terms.1321	$tt_ids     = array();1322	$have_tags  = false;1323	$categories = $wpdb->get_results( "SELECT * FROM $wpdb->categories ORDER BY cat_ID" );1324	foreach ( $categories as $category ) {1325		$term_id     = (int) $category->cat_ID;1326		$name        = $category->cat_name;1327		$description = $category->category_description;1328		$slug        = $category->category_nicename;1329		$parent      = $category->category_parent;1330		$term_group  = 0;1331 1332		// Associate terms with the same slug in a term group and make slugs unique.1333		$exists = $wpdb->get_results( $wpdb->prepare( "SELECT term_id, term_group FROM $wpdb->terms WHERE slug = %s", $slug ) );1334		if ( $exists ) {1335			$term_group = $exists[0]->term_group;1336			$id         = $exists[0]->term_id;1337			$num        = 2;1338			do {1339				$alt_slug = $slug . "-$num";1340				++$num;1341				$slug_check = $wpdb->get_var( $wpdb->prepare( "SELECT slug FROM $wpdb->terms WHERE slug = %s", $alt_slug ) );1342			} while ( $slug_check );1343 1344			$slug = $alt_slug;1345 1346			if ( empty( $term_group ) ) {1347				$term_group = $wpdb->get_var( "SELECT MAX(term_group) FROM $wpdb->terms GROUP BY term_group" ) + 1;1348				$wpdb->query( $wpdb->prepare( "UPDATE $wpdb->terms SET term_group = %d WHERE term_id = %d", $term_group, $id ) );1349			}1350		}1351 1352		$wpdb->query(1353			$wpdb->prepare(1354				"INSERT INTO $wpdb->terms (term_id, name, slug, term_group) VALUES1355		(%d, %s, %s, %d)",1356				$term_id,1357				$name,1358				$slug,1359				$term_group1360			)1361		);1362 1363		$count = 0;1364		if ( ! empty( $category->category_count ) ) {1365			$count    = (int) $category->category_count;1366			$taxonomy = 'category';1367			$wpdb->query( $wpdb->prepare( "INSERT INTO $wpdb->term_taxonomy (term_id, taxonomy, description, parent, count) VALUES ( %d, %s, %s, %d, %d)", $term_id, $taxonomy, $description, $parent, $count ) );1368			$tt_ids[ $term_id ][ $taxonomy ] = (int) $wpdb->insert_id;1369		}1370 1371		if ( ! empty( $category->link_count ) ) {1372			$count    = (int) $category->link_count;1373			$taxonomy = 'link_category';1374			$wpdb->query( $wpdb->prepare( "INSERT INTO $wpdb->term_taxonomy (term_id, taxonomy, description, parent, count) VALUES ( %d, %s, %s, %d, %d)", $term_id, $taxonomy, $description, $parent, $count ) );1375			$tt_ids[ $term_id ][ $taxonomy ] = (int) $wpdb->insert_id;1376		}1377 1378		if ( ! empty( $category->tag_count ) ) {1379			$have_tags = true;1380			$count     = (int) $category->tag_count;1381			$taxonomy  = 'post_tag';1382			$wpdb->insert( $wpdb->term_taxonomy, compact( 'term_id', 'taxonomy', 'description', 'parent', 'count' ) );1383			$tt_ids[ $term_id ][ $taxonomy ] = (int) $wpdb->insert_id;1384		}1385 1386		if ( empty( $count ) ) {1387			$count    = 0;1388			$taxonomy = 'category';1389			$wpdb->insert( $wpdb->term_taxonomy, compact( 'term_id', 'taxonomy', 'description', 'parent', 'count' ) );1390			$tt_ids[ $term_id ][ $taxonomy ] = (int) $wpdb->insert_id;1391		}1392	}

Changelog

Introduced in 2.3.0. 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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