wppaste
WordPress

PHPMailer::fileIsAccessible( string $path ): bool

Source
wp-includes/PHPMailer/PHPMailer.php:2059
Check whether a file path is safe, accessible, and readable.

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

$pathstring
A relative or absolute path to a file

Return value

bool

Performance profile

How much work a call to PHPMailer::fileIsAccessible() 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 is_file().

Scaling
Constant

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

Instructions
6–18

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 19.

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 it touches

  • filesystemfilesystem accessis_file()called directly

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

WhenInstructionsCalls it makes
!::isPermittedPath()6::isPermittedPath()
::isPermittedPath()12–14::isPermittedPath(), is_file()
::isPermittedPath() && is_file()18::isPermittedPath(), is_file(), is_readable()

Across PHP versions

PHPCompiledExecutedBranchesNotes
8.6-dev196–183
8.5196–183
8.4196–1833 fewer instructions than PHP 8.3
8.3226–213
8.2226–213
8.1226–213
7.4226–213

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

  • static::isPermittedPath()

Source code

View on Trac View on GitHub 

    protected static function fileIsAccessible($path)    {        if (!static::isPermittedPath($path)) {            return false;        }        $readable = is_file($path);        //If not a UNC path (expected to start with \\), check read permission, see #2069        if (strpos($path, '\\\\') !== 0) {            $readable = $readable && is_readable($path);        }        return  $readable;    }

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/PHPMailer/PHPMailer.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.