WP_Font_Face::get_css( array[] $font_faces ): string
- Since
- 6.4.0
- Source
wp-includes/fonts/class-wp-font-face.php:211
@font-face CSS styles for locally-hosted font files.Description
This method does the following processing tasks:
- Orchestrates an optimized
src(with format) for browser support. - Generates the
@font-facefor all its fonts.
Compatibility
- WordPress
- since 6.4.0
- 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
$font_facesarray[]- The font-faces to generate @font-face CSS styles.
Return value
string- The
@font-faceCSS styles.
Performance profile
How much work a call to WP_Font_Face::get_css() 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
- Trivial
- Scaling
- Scales with input
- Instructions
- 9–10
- Plugin surface
- None
- Called by
- 1
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 21.
Nothing here hands control to plugin code.
1 place in core call this, so the cost is paid more often than your own code shows.
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 WP_Font_Face::get_css() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
| always | 9–10 | rtrim() |
Across PHP versions
Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 21 instructions, 9–10 executed per call, 2 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 · 2
- WP_Font_Face::order_src()Orders `src` items to optimize for browser support.
- WP_Font_Face::build_font_face_css()Builds the font-family's CSS.
Used by · 1
- WP_Font_Face::generate_and_print()Generates and prints the `@font-face` styles for the given fonts.
Source code
private function get_css( $font_faces ) { $css = ''; foreach ( $font_faces as $font_face ) { // Order the font's `src` items to optimize for browser support. $font_face = $this->order_src( $font_face ); // Build the @font-face CSS for this font. $css .= '@font-face{' . $this->build_font_face_css( $font_face ) . '}' . "\n"; } // Don't print the last newline character. return rtrim( $css, "\n" ); }Changelog
Introduced in 6.4.0. 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/fonts/class-wp-font-face.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.