Check if array exists

[SaranacLake]

I am trying to compare an array containing required questions to an array holding survey responses.

When a user submits a survey, I take the $_POST array and write the values to a new array called $surveyResponseArray.

How can I determine if $surveyResponseArray exists?

 

 

Edited February 16, 2021 by SaranacLake

[SaranacLake]

It looks like this might work?

	if (empty($myArray)){
	  // Handle array
	}else{
	  // Handle empty array
	}
	

 

[gw1500se]

$_POST will normally always have values for each element in the form. However, some of the values may be "empty". So you would need to use 'empty' on each element rather than the entire array.

As an aside, although it will not do what you want, based on the code comments your 'if' block should be:

if (!empty($myArray)){
	  // Handle array
	}else{
	  // Handle empty array
	}

 

[SaranacLake]

@gw1500se

Yes, I forgot the "!"

empty() seems to do the trick.

Thanks.