_wp_apply_block_content_filters( string $content, string $context = '', array|null $seen_ids = null, string|null $id = null ): string

Description

Compatibility

Present in 1 of the 5 tracked releases, added in 7.1.0, and compiles on PHP 7.4 through 8.6-dev.

Parameters

$contentstring

The content to process.

$contextstringoptional

Context identifier for wp_filter_content_tags().
Default empty string.Default: ''

$seen_idsarray|nulloptional

Reference to an array tracking seen IDs for recursion prevention. Default null.Default: null

$idstring|nulloptional

Unique identifier for this content, used with $seen_ids. Default null.Default: null

Return value

string

The processed content.

Performance profile

How much work a call to _wp_apply_block_content_filters() 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

Moderate

Reads stored settings via get_option(), cached per request but not free on a cold cache.

Scaling

Constant

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

Instructions

39–43

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 49.

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 _wp_apply_block_content_filters()
• optionoption read or writeget_option()one call below _wp_apply_block_content_filters()

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

Uses · 6

• shortcode_unautop()Don't auto-p wrap shortcodes that stand alone.
• do_shortcode()Searches content for shortcodes and filter shortcodes through their hooks.
• do_blocks()Parses dynamic blocks out of `post_content` and re-renders them.
• wptexturize()Replaces common plain text characters with formatted entities.
• convert_smilies()Converts text equivalent of smilies to images.
• wp_filter_content_tags()Filters specific tags in post content and modifies their markup.

Used by · 2

• render_block_core_latest_posts()Renders the `core/latest-posts` block on server.
• render_block_core_template_part()Renders the `core/template-part` block on the server.

Source code

View on Trac ↗View on GitHub ↗

2650function _wp_apply_block_content_filters( $content, $context = '', &$seen_ids = null, $id = null ) {2651	$content = shortcode_unautop( $content );2652	$content = do_shortcode( $content );2653 2654	if ( null !== $seen_ids && null !== $id ) {2655		$seen_ids[ $id ] = true;2656	}2657 2658	try {2659		$content = do_blocks( $content );2660	} finally {2661		if ( null !== $seen_ids && null !== $id ) {2662			unset( $seen_ids[ $id ] );2663		}2664	}2665 2666	$content = wptexturize( $content );2667	$content = convert_smilies( $content );2668	$content = wp_filter_content_tags( $content, $context );2669 2670	global $wp_embed;2671	$content = $wp_embed->autoembed( $content );2672 2673	return $content;2674}

Changelog

Introduced in 7.1.0.

Signature, return type and hooks compared across 1 parsed release.

About this page

Parsed data

Generated from the wordpress-develop 7.1.0 tag, from src/wp-includes/blocks.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

Corrections

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