get_most_active_blogs( int $num = 10, bool $display = true ): array
- Since
- MU (3.0.0)
- Source
wp-includes/ms-deprecated.php:223
Compatibility
Deprecated in WordPress 3.0.0. Kept for back-compatibility; avoid it in new code.
- WordPress
- since MU (3.0.0)
- PHP
- 7.4–8.6-dev
- 6.7.7
- 6.8.8
- 6.9.7
- 7.0.4
- 7.1.0
Present in every tracked release (6.7.7 to 7.1.0), and compiles on PHP 7.4 through 8.6-dev.
Parameters
$numintoptional- Number of activate blogs to retrieve. Default 10.Default:
10 $displaybooloptional- Whether or not to display the most active blogs list. Default true.Default:
true
Return value
array- List of "most active" sites.
Performance profile
How much work a call to get_most_active_blogs() does, and what it touches: the algorithmic scaling, the Zend instruction count per call across PHP versions, the hooks it hands control to, and the core code that calls it. Measured from the compiled opcodes, not a stopwatch, so every number is identical on any machine running the same PHP version, and every function in core is ranked by cost.
- Cost class
- Light
- Scaling
- Scales with input
- Instructions
- 21–52
- Plugin surface
- None
- Called by
- 0
Touches nothing outside its own arguments.
The body loops, so the work grows with what you pass in.
Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 85.
Nothing here hands control to plugin code.
Nothing in core calls this; the cost is only what you spend yourself.
What it touches
- hookthird-party callbacks
do_action()one call below get_most_active_blogs()
Further down the call graph this can also reach query, option, cache, serialize and transient. Those are the worst case, several calls deep and usually down an error path, not what a normal call pays.
What one call costs · 4 distinct outcomes
One number would be a lie: the work depends on which branch runs. These are every distinct cost get_most_active_blogs() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
!is_array($blogs) | 21–23 | _deprecated_function(), get_blog_list(), array_slice() |
!is_array($blogs) && is_array($most_active) | 29–30 | _deprecated_function(), get_blog_list(), reset(), array_slice() |
is_array($blogs) | 41–45 | _deprecated_function(), get_blog_list(), reset(), arsort(), reset(), array_slice() |
is_array($blogs) && is_array($most_active) | 49–52 | _deprecated_function(), get_blog_list(), reset(), arsort(), reset(), reset(), array_slice() |
Across PHP versions
Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 85 instructions, 21–52 executed per call, 9 branches. The work does not change between versions.
An instruction is not a fixed amount of time, so a matching count is not necessarily the same speed; what it rules out is a difference in the work itself.
Uses · 3
- _deprecated_function()Marks a function as deprecated and inform when it has been used.
- get_blog_list()Deprecated functionality to retrieve a list of all sites.
- esc_url()Checks and cleans a URL.
Source code
function get_most_active_blogs( $num = 10, $display = true ) { _deprecated_function( __FUNCTION__, '3.0.0' ); $blogs = get_blog_list( 0, 'all', false ); // $blog_id -> $details if ( is_array( $blogs ) ) { reset( $blogs ); $most_active = array(); $blog_list = array(); foreach ( (array) $blogs as $key => $details ) { $most_active[ $details['blog_id'] ] = $details['postcount']; $blog_list[ $details['blog_id'] ] = $details; // array_slice() removes keys! } arsort( $most_active ); reset( $most_active ); $t = array(); foreach ( (array) $most_active as $key => $details ) { $t[ $key ] = $blog_list[ $key ]; } unset( $most_active ); $most_active = $t; } if ( $display ) { if ( is_array( $most_active ) ) { reset( $most_active ); foreach ( (array) $most_active as $key => $details ) { $url = esc_url('http://' . $details['domain'] . $details['path']); echo '<li>' . $details['postcount'] . " <a href='$url'>$url</a></li>"; } } } return array_slice( $most_active, 0, $num );}Changelog
Introduced in MU (3.0.0). Unchanged from 6.7.7 through 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-includes/ms-deprecated.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it. - Corrections
- Something wrong on this page? Report it and it gets fixed in the next regeneration.