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WP_Block_Bindings_Source::get_value( array $source_args, WP_Block $block_instance, string $attribute_name ): mixed

Since
6.5.0, 6.7.0
Source
wp-includes/class-wp-block-bindings-source.php:85
Calls the callback function specified in the $get_value_callback property with the given arguments and returns the result. It can be modified with block_bindings_source_value filter.

Compatibility

WordPress
since 6.7.0
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

$source_argsarray
Array containing source arguments used to look up the override value, i.e. {"key": "foo"}.
$block_instanceWP_Block
The block instance.
$attribute_namestring
The name of the target attribute.

Return value

mixed
The value of the source.

Performance profile

How much work a call to WP_Block_Bindings_Source::get_value() 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
23

Executed per call on PHP 8.5. The body compiles to 23.

Plugin surface
1 hook

Third-party callbacks on 'block_bindings_source_value' run inside this call, and their cost is not bounded by anything here.

Called by
0

Nothing in core calls this; the cost is only what you spend yourself.

What it touches

  • hookthird-party callbacksapply_filters()called directly

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_Block_Bindings_Source::get_value() can have, taken from its control-flow graph on PHP 8.5.

WhenInstructionsCalls it makes
always23apply_filters()

Across PHP versions

PHPCompiledExecutedBranchesNotes
8.6-dev23230
8.523230
8.423230
8.323230
8.223230
8.1232301 more instruction than PHP 7.4
7.422220

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.

Hooks and filters fired · 1

One hook fires while WP_Block_Bindings_Source::get_value() runs, in this order:

  1. apply_filters( block_bindings_source_value )filterline 98 (+13 into the body)

    Filters the output of a block bindings source.

Uses · 1

  • apply_filters()Calls the callback functions that have been added to a filter hook.

Source code

	public function get_value( array $source_args, $block_instance, string $attribute_name ) {		$value = call_user_func_array( $this->get_value_callback, array( $source_args, $block_instance, $attribute_name ) );		/**		 * Filters the output of a block bindings source.		 *		 * @since 6.7.0		 *		 * @param mixed    $value          The computed value for the source.		 * @param string   $name           The name of the source.		 * @param array    $source_args    Array containing source arguments used to look up the override value, i.e. { "key": "foo" }.		 * @param WP_Block $block_instance The block instance.		 * @param string   $attribute_name The name of an attribute.		 */		return apply_filters( 'block_bindings_source_value', $value, $this->name, $source_args, $block_instance, $attribute_name );	}

Changelog

Introduced in 6.5.0. 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.

6.7.0
block_bindings_source_value filter was added.from the docblock
6.5.0
Introduced.from the docblock

About this page

Parsed data
Generated from the wordpress-develop 7.1.0 tag, from src/wp-includes/class-wp-block-bindings-source.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.
Corrections
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