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IXR_Server::call( $methodname, $args )

Source
wp-includes/IXR/class-IXR-server.php:87

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

$methodname
$args

Performance profile

How much work a call to IXR_Server::call() 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
13–37

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 80.

Plugin surface
None

Nothing here hands control to plugin code.

Called by
3

3 places in core call this, so the cost is paid more often than your own code shows.

What one call costs · 7 distinct outcomes

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

WhenInstructionsCalls it makes
!->hasMethod()13->hasMethod()
->hasMethod() && !is_array($method) && function_exists()24–30->hasMethod(), function_exists(), call_user_func()
->hasMethod() && !is_array($method) && !function_exists()26–32->hasMethod(), function_exists()
->hasMethod() && is_array($method)28–34->hasMethod(), call_user_func()
->hasMethod() && is_string($method) && method_exists()30–32->hasMethod(), method_exists(), ->method()
->hasMethod() && is_array($method)31–37->hasMethod(), is_callable()
->hasMethod() && is_string($method) && !method_exists()32–34->hasMethod(), method_exists()

Across PHP versions

PHPCompiledExecutedBranchesNotes
8.6-dev8013–378
8.58013–378
8.48013–3786 fewer instructions than PHP 8.3
8.38613–408
8.28613–408
8.18613–408
7.48613–408

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.

Uses · 3

Used by · 3

Source code

    function call($methodname, $args)    {        if (!$this->hasMethod($methodname)) {            return new IXR_Error(-32601, 'server error. requested method '.$methodname.' does not exist.');        }        $method = $this->callbacks[$methodname];         // Perform the callback and send the response        if (count($args) == 1) {            // If only one parameter just send that instead of the whole array            $args = $args[0];        }         // Are we dealing with a function or a method?        if (is_string($method) && substr($method, 0, 5) == 'this:') {            // It's a class method - check it exists            $method = substr($method, 5);            if (!method_exists($this, $method)) {                return new IXR_Error(-32601, 'server error. requested class method "'.$method.'" does not exist.');            }             //Call the method            $result = $this->$method($args);        } else {            // It's a function - does it exist?            if (is_array($method)) {                if (!is_callable(array($method[0], $method[1]))) {                    return new IXR_Error(-32601, 'server error. requested object method "'.$method[1].'" does not exist.');                }            } else if (!function_exists($method)) {                return new IXR_Error(-32601, 'server error. requested function "'.$method.'" does not exist.');            }             // Call the function            $result = call_user_func($method, $args);        }        return $result;    }

Changelog

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/IXR/class-IXR-server.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.
Corrections
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