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WordPress

twentyten_continue_reading_link(): string

Since
Twenty Ten 1.0
Source
wp-content/themes/twentyten/functions.php:370
Returns a "Continue Reading" link for excerpts.

Compatibility

WordPress
since Twenty Ten 1.0
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.

Return value

string
"Continue Reading" link.

Performance profile

How much work a call to twentyten_continue_reading_link() 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_post().

Scaling
Constant

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

Instructions
14

Executed per call on PHP 8.5. The body compiles to 14.

Plugin surface
None

Nothing here hands control to plugin code.

Called by
2

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

What it touches

  • hookthird-party callbacksapply_filters()one call below twentyten_continue_reading_link()
  • querycontent queryget_post()one call below twentyten_continue_reading_link()
  • optionoption read or writeget_option()one call below twentyten_continue_reading_link()

Further down the call graph this can also reach 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 twentyten_continue_reading_link() can have, taken from its control-flow graph on PHP 8.5.

WhenInstructionsCalls it makes
always14get_permalink(), esc_url(), __()

Across PHP versions

Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 14 instructions, 14 executed per call, 0 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

  • esc_url()Checks and cleans a URL.
  • get_permalink()Retrieves the full permalink for the current post or post ID.
  • __()Retrieves the translation of $text.

Used by · 2

Source code

View on Trac View on GitHub 

	function twentyten_continue_reading_link() {		return ' <a href="' . esc_url( get_permalink() ) . '">' . __( 'Continue reading <span class="meta-nav">&rarr;</span>', 'twentyten' ) . '</a>';	}

Changelog

Introduced in Twenty Ten 1.0. 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-content/themes/twentyten/functions.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.
Corrections
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