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is_post_status_viewable( string|stdClass $post_status ): bool

Since
5.7.0, 5.9.0
Source
wp-includes/post.php:2452
Determines whether a post status is considered "viewable".

Description

For built-in post statuses such as publish and private, the 'public' value will be evaluated.
For all others, the 'publicly_queryable' value will be used.

Compatibility

WordPress
since 5.9.0
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

$post_statusstring|stdClass
Post status name or object.

Return value

bool
Whether the post status should be considered viewable.

Performance profile

How much work a call to is_post_status_viewable() 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
6–30

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 33.

Plugin surface
1 hook

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

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()called directly

What one call costs · 4 distinct outcomes

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

WhenInstructionsCalls it makes
always6–10none
is_scalar($post_status) && is_string($post_status)11–17get_post_status_object()
!is_scalar($post_status) && is_object($post_status) && !$post_status19–23apply_filters()
is_scalar($post_status) && is_string($post_status) && is_object($post_status) && !$post_status26–30get_post_status_object(), apply_filters()

Across PHP versions

PHPCompiledExecutedBranchesNotes
8.6-dev336–308
8.5336–308
8.4336–308
8.3336–308
8.2336–308
8.1336–3082 fewer instructions than PHP 7.4
7.4358–328

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 is_post_status_viewable() runs, in this order:

  1. apply_filters( is_post_status_viewable )filterline 2489 (+37 into the body)

    Filters whether a post status is considered "viewable".

Uses · 2

Used by · 2

Source code

function is_post_status_viewable( $post_status ) {	if ( is_scalar( $post_status ) ) {		if ( ! is_string( $post_status ) ) {			return false;		} 		$post_status = get_post_status_object( $post_status ); 		if ( ! $post_status ) {			return false;		}	} 	if (		! is_object( $post_status ) ||		$post_status->internal ||		$post_status->protected	) {		return false;	} 	$is_viewable = $post_status->publicly_queryable || ( $post_status->_builtin && $post_status->public ); 	/**	 * Filters whether a post status is considered "viewable".	 *	 * The returned filtered value must be a boolean type to ensure	 * `is_post_status_viewable()` only returns a boolean. This strictness	 * is by design to maintain backwards-compatibility and guard against	 * potential type errors in PHP 8.1+. Non-boolean values (even falsey	 * and truthy values) will result in the function returning false.	 *	 * @since 5.9.0	 *	 * @param bool     $is_viewable Whether the post status is "viewable" (strict type).	 * @param stdClass $post_status Post status object.	 */	return true === apply_filters( 'is_post_status_viewable', $is_viewable, $post_status );}

Changelog

Introduced in 5.7.0. 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.

5.9.0
Added is_post_status_viewable hook to filter the result.from the docblock
5.7.0
Introduced.from the docblock

About this page

Parsed data
Generated from the wordpress-develop 7.0.4 tag, from src/wp-includes/post.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.
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