WP_Embed::maybe_make_link( string $url ): string|false
- Source
wp-includes/class-wp-embed.php:478
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.
Parameters
$urlstring- URL to potentially be linked.
Return value
string|false- Linked URL or the original URL. False if 'return_false_on_fail' is true.
Performance profile
How much work a call to WP_Embed::maybe_make_link() 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
- Constant
- Instructions
- 4–23
- Plugin surface
- 1 hook
- Called by
- 1
Touches nothing outside its own arguments.
No loop in the body: the same number of instructions runs whatever you pass in.
Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 25.
Third-party callbacks on 'embed_maybe_make_link' run inside this call, and their cost is not bounded by anything here.
1 place in core call this, so the cost is paid more often than your own code shows.
What it touches
- hookthird-party callbacks
apply_filters()called directly
Further down the call graph this can also reach option, cache, serialize, query 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 · 3 distinct outcomes
One number would be a lie: the work depends on which branch runs. These are every distinct cost WP_Embed::maybe_make_link() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
| always | 4 | none |
| always | 13 | apply_filters() |
| always | 23 | esc_url(), esc_html(), apply_filters() |
Across PHP versions
| PHP | Compiled | Executed | Branches | Notes |
|---|---|---|---|---|
| 8.6-dev | 25 | 4–23 | 2 | |
| 8.5 | 25 | 4–23 | 2 | |
| 8.4 | 25 | 4–23 | 2 | |
| 8.3 | 25 | 4–23 | 2 | |
| 8.2 | 25 | 4–23 | 2 | |
| 8.1 | 25 | 4–23 | 2 | 1 fewer instruction than PHP 7.4 |
| 7.4 | 26 | 4–24 | 2 |
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_Embed::maybe_make_link() runs, in this order:
- apply_filters( embed_maybe_make_link )filterline 493 (+15 into the body)
Filters the returned, maybe-linked embed URL.
Uses · 3
- esc_url()Checks and cleans a URL.
- esc_html()Escaping for HTML blocks.
- apply_filters()Calls the callback functions that have been added to a filter hook.
Used by · 1
- WP_Embed::shortcode()The do_shortcode() callback function.
Source code
public function maybe_make_link( $url ) { if ( $this->return_false_on_fail ) { return false; } $output = ( $this->linkifunknown ) ? '<a href="' . esc_url( $url ) . '">' . esc_html( $url ) . '</a>' : $url; /** * Filters the returned, maybe-linked embed URL. * * @since 2.9.0 * * @param string $output The linked or original URL. * @param string $url The original URL. */ return apply_filters( 'embed_maybe_make_link', $output, $url ); }Changelog
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 7.0.4 tag, from
src/wp-includes/class-wp-embed.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.