1.2.948. PHP7 Dirname

dirname() has a second argument that represents the number of parent folder to follow. This prevent us from using nested dirname() calls to reach an grand-parent direct.

<?php
$path = '/a/b/c/d/e/f';

// PHP 7 syntax
$threeFoldersUp = dirname($path, 3);

// PHP 5 syntax
$threeFoldersUp = dirname(dirname(dirname($path)));

// long path, with backtracking
$path = __DIR__.'/../../../abc';

// short path, with direct access
$path = dirname(__DIR__, 3).'/abc';

?>

See also dirname.

1.2.948.1. Suggestions

• Use dirname()’s second argument

1.2.948.2. Specs

Short name	Structures/PHP7Dirname
Rulesets	All, CompatibilityPHP53, CompatibilityPHP54, CompatibilityPHP55, CompatibilityPHP56, Suggestions, php-cs-fixable
Exakat since	0.8.4
PHP Version	With PHP 7.0 and more recent
Severity	Minor
Time To Fix	Quick (30 mins)
Precision	High
Examples	OpenConf, MediaWiki
Available in	Entreprise Edition, Exakat Cloud