wp_is_stream( string $path ): bool
- Since
- 3.5.0
- Source
wp-includes/functions.php:7359
Compatibility
- WordPress
- since 3.5.0
- 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
$pathstring- The resource path or URL.
Return value
bool- True if the path is a stream URL.
Performance profile
How much work a call to wp_is_stream() 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
- 5–11
- Plugin surface
- None
- Called by
- 9
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 12.
Nothing here hands control to plugin code.
9 places in core call this, so the cost is paid more often than your own code shows.
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 wp_is_stream() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
$scheme_separator === false | 5 | none |
$scheme_separator !== false | 11 | stream_get_wrappers() |
Across PHP versions
| PHP | Compiled | Executed | Branches | Notes |
|---|---|---|---|---|
| 8.6-dev | 12 | 5–11 | 1 | |
| 8.5 | 12 | 5–11 | 1 | |
| 8.4 | 12 | 5–11 | 1 | 10 fewer instructions than PHP 8.3 |
| 8.3 | 22 | 8–21 | 1 | |
| 8.2 | 22 | 8–21 | 1 | |
| 8.1 | 22 | 8–21 | 1 | |
| 7.4 | 22 | 8–21 | 1 |
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.
Used by · 9
- WP_Image_Editor::generate_filename()Builds an output filename based on current file, and adding proper suffix
- WP_Image_Editor::make_image()Either calls editor's save function or handles file as a stream.
- WP_Image_Editor_GD::make_image()Either calls editor's save function or handles file as a stream.
- WP_Image_Editor_Imagick::load()Loads image from $this->file into new Imagick Object.
- WP_Image_Editor_Imagick::write_image()Writes an image to a file or stream.
- path_is_absolute()Tests if a given filesystem path is absolute.
- wp_delete_file_from_directory()Deletes a file if its path is within the given directory.
- wp_mkdir_p()Recursive directory creation based on full path.
- wp_normalize_path()Normalizes a filesystem path.
Source code
function wp_is_stream( $path ) { $scheme_separator = strpos( $path, '://' ); if ( false === $scheme_separator ) { // $path isn't a stream. return false; } $stream = substr( $path, 0, $scheme_separator ); return in_array( $stream, stream_get_wrappers(), true );}Changelog
Introduced in 3.5.0. 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 6.8.8 tag, from
src/wp-includes/functions.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it. - Corrections
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