Whenever you decide to send a mail message using client-data, you are at risk. Continue normally because you know its setĪnd like has been said, you can shorthand the ternary and just use: $target_val = $values ?: null īut you will get a notice thrown on array value not set so I always just use isset and assign a value in the ternary to avoid silencing messages for no reason. Though this does not really answer your question, I do urge you to look into Mail-injection. I know that the value is not set and if I want to check if it is set: if(!!$target_val)Īnd it may be a bit verbose but you can do it all in one swoop like this: if(!($target_val = isset($values) ? $values : null)) I've seen someone throw exceptions before without using try/catch blocks and without including an Exceptions class. A variable is considered empty if it has no value, or if the value is NULL, 0,, false, array () or 0. The empty () function is a built-in PHP function that checks if a variable is considered empty. in this example if I do: if(!$target_val) Part of PHP Collective 4 I'm trying to throw an exception when a form field is empty and also when an insert query is unsuccessful. The simplest and most commonly used method to check if a variable is empty in PHP is to use the empty () function. Asking for help, clarification, or responding to other answers. If you are merely worried about not having the errors output then you should just turn off displayerrors which you should always do in a production environment anyway. Thanks for contributing an answer to Stack Overflow Please be sure to answer the question.Provide details and share your research But avoid. The proper way to do this is check that the file exists before trying to call unlink on it. You can set a default value and if your using a false evaluating value as the default its easy to see if the variable was set. unlink doesn't throw exceptions, in generates errors. I settled on this because it appeared to be the most versatile. I have a PHP script that receives POST with multiple data (+30), all of them required. When an exception is thrown, the code following it will not be executed, and PHP will try to find the matching catch block. $target_val = isset($values) ? $values : null Sorry to open this up again, but I spent a good 20 min testing out cases because this conversation did so many loops through multiple techniques but didn't appear to settle. Best way is always the ternary operators.
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