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getid3_lib::IncludeDependency( string $filename, string $sourcefile, bool $DieOnFailure = false ): bool

Source
wp-includes/ID3/getid3.lib.php:1755

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

$filenamestring
$sourcefilestring
$DieOnFailurebooloptional
Default: false

Return value

bool

Performance profile

How much work a call to getid3_lib::IncludeDependency() 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

Reads or writes the filesystem via file_exists().

Scaling
Constant

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

Instructions
11–23

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 34.

Plugin surface
None

Nothing here hands control to plugin code.

Called by
4

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

What it touches

  • filesystemfilesystem accessfile_exists()called directly

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 getid3_lib::IncludeDependency() can have, taken from its control-flow graph on PHP 8.5.

WhenInstructionsCalls it makes
file_exists() && $filename11file_exists()
always19–23file_exists(), basename()

Across PHP versions

Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 34 instructions, 11–23 executed per call, 3 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.

Uses · 1

Used by · 4

Source code

View on Trac View on GitHub 

	public static function IncludeDependency($filename, $sourcefile, $DieOnFailure=false) {		global $GETID3_ERRORARRAY; 		if (file_exists($filename)) {			if (include_once($filename)) {				return true;			} else {				$diemessage = basename($sourcefile).' depends on '.$filename.', which has errors';			}		} else {			$diemessage = basename($sourcefile).' depends on '.$filename.', which is missing';		}		if ($DieOnFailure) {			throw new Exception($diemessage);		} else {			$GETID3_ERRORARRAY[] = $diemessage;		}		return false;	}

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/ID3/getid3.lib.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.
Corrections
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