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echo a series of strings with empty values


etrader

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I have a series of string which can have a value or empty. I want to display them with echo.

 

echo $string1 $string2 $string3; satisfies my need, as it shows available values, but with this method, I will get a PHP notice in my error_logs. What is your suggestion? Do I need to use "if (empty)" or "if(isset)"? The point is I have numerous strings and in each run only few of them have value.

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