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Features::get_primary_item_features(): Avifinfo\Status

Source
wp-includes/class-avif-info.php:192
Finds the width, height, bit depth and number of channels of the primary item.

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.

Return value

Avifinfo\Status
FOUND on success or NOT_FOUND on failure.

Performance profile

How much work a call to Features::get_primary_item_features() 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

Touches nothing outside its own arguments.

Scaling
Constant

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

Instructions
4–23

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 28.

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 one call costs · 2 distinct outcomes

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

WhenInstructionsCalls it makes
always4–8none
!empty($value)17–23->get_item_features()

Across PHP versions

Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 28 instructions, 4–23 executed per call, 5 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 · 1

  • \Avifinfo\Features::get_item_features()

Source code

  public function get_primary_item_features() {    // Nothing to do without the primary item ID.    if ( !$this->has_primary_item ) {      return NOT_FOUND;    }    // Early exit.    if ( empty( $this->dim_props ) || empty( $this->chan_props ) ) {      return NOT_FOUND;    }    $status = $this->get_item_features( $this->primary_item_id, /*tile_depth=*/ 0 );    if ( $status != FOUND ) {      return $status;    }     // "auxC" is parsed before the "ipma" properties so it is known now, if any.    if ( $this->has_alpha ) {      ++$this->primary_item_features['num_channels'];    }    return FOUND;  }

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-includes/class-avif-info.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.
Corrections
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