1.2.272. Could Be Stringable¶
Stringable is an interface that marks classes with a custom method to cast the object as a string. It was introduced in PHP 8.0.
Classes that defined a __toString() magic method may be turned into a string when the typehint, argument, return or property, requires it. This is not the case when strict_types is activated. Yet, until PHP 8.0, there was nothing to identify a class as such.
<?php
// This class may implement Stringable
class x {
function __tostring() {
return 'asd';
}
}
echo (new x);
?>
See also PHP RFC: Add Stringable interface and The Stringable interface.
1.2.272.1. Connex PHP features¶
1.2.272.1.1. Suggestions¶
Add implements stringable to the class definition
Add extends stringable to the interface definition
1.2.272.1.2. Specs¶
Short name |
Classes/CouldBeStringable |
Rulesets |
All, Changed Behavior, Class Review, LintButWontExec, PHP recommendations |
Exakat since |
2.1.9 |
PHP Version |
With PHP 8.0 and more recent |
Severity |
Minor |
Time To Fix |
Quick (30 mins) |
Precision |
Very high |
Note |
This issue may lint but will not run |
Available in |