wppaste
WordPress

hello_dolly()

Source
wp-content/plugins/hello.php:59

Compatibility

WordPress
core
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.

Performance profile

How much work a call to hello_dolly() 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_user_by().

Scaling
Constant

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

Instructions
20–21

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 21.

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

  • querycontent queryget_user_by()one call below hello_dolly()

Further down the call graph this can also reach hook, 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 · 1 distinct outcome

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

WhenInstructionsCalls it makes
always20–21hello_dolly_get_lyric(), get_user_locale(), __(), printf()

Across PHP versions

PHPCompiledExecutedBranchesNotes
8.6-dev2322–2312 more instructions than PHP 8.5
8.52120–211
8.42120–2113 fewer instructions than PHP 8.3
8.32423–241
8.22423–241
8.12423–241
7.42423–241

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

Source code

View on Trac View on GitHub 

function hello_dolly() {	$chosen = hello_dolly_get_lyric();	$lang   = '';	if ( 'en_' !== substr( get_user_locale(), 0, 3 ) ) {		$lang = ' lang="en"';	} 	printf(		'<p id="dolly"><span class="screen-reader-text">%s </span><span dir="ltr"%s>%s</span></p>',		__( 'Quote from Hello Dolly song, by Jerry Herman:' ),		$lang,		$chosen	);}

Changelog

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-content/plugins/hello.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.
Corrections
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