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WordPress

WP_Http_Curl::stream_headers( resource $handle, string $headers ): int

Since
3.2.0
Source
wp-includes/class-wp-http-curl.php:373
Grabs the headers of the cURL request.

Description

Each header is sent individually to this callback, and is appended to the $header property for temporary storage.

Compatibility

WordPress
since 3.2.0
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

$handleresource
cURL handle.
$headersstring
cURL request headers.

Return value

int
Length of the request headers.

Performance profile

How much work a call to WP_Http_Curl::stream_headers() 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

Executed per call on PHP 8.5. The body compiles to 6.

Plugin surface
None

Nothing here hands control to plugin code.

Called by
0

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

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

WhenInstructionsCalls it makes
always6none

Across PHP versions

Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 6 instructions, 6 executed per call, 0 branches. The work does not change between versions.

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.

Source code

View on Trac View on GitHub 

	private function stream_headers( $handle, $headers ) {		$this->headers .= $headers;		return strlen( $headers );	}

Changelog

Introduced in 3.2.0. 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.

About this page

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