1.2.944. PHP Overridden Function

It is possible to declare and use a function with the same name as a PHP native, in a namespace.

Within the declaration namespace, it is easy to confuse the local version and the global version, unless the function has been prefixed with \.

When a piece of code use overridden function, any newcomer may be confused by the usage of classic PHP native function in surprising situations.

It is recommended to avoid redeclare PHP native function in namespaces.

<?php

namespace A {
    use function A\dirname as split;

    function dirname($a, $b) { return __FUNCTION__; }

    echo dirname('/a/b/c');
    echo split('a', 'b');

    echo \dirname('/a/b/c');
}

?>

1.2.944.1. Suggestions

• Change the name of the function, in its declaration and usage.

1.2.944.2. Specs

Short name	Php/OveriddenFunction
Rulesets	All, Appinfo, CE, IsExt, IsPHP, IsStub
Exakat since	1.7.6
PHP Version	All
Severity	Minor
Time To Fix	Quick (30 mins)
Precision	Very high
Features	function
Configurable by	php_core, php_extensions, stubs
Available in	Entreprise Edition, Community Edition, Exakat Cloud