Can functions like strlen be used within a class property assignment in PHP, and if not, what is the correct approach?

When assigning a class property in PHP, you cannot directly use functions like strlen within the assignment. Instead, you should calculate the value outside of the assignment and then assign the result to the property. This can be done in the class constructor or in a separate method. 

class MyClass {
    private $stringLength;

    public function __construct($inputString) {
        $this->stringLength = strlen($inputString);
    }
}

Keywords

strlen class property assignment PHP functions correct approach error types

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