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I want to check that an array has no values or that the values in the array are empty. Can someone explain how to do this?
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To check if an array is empty or not, you can use the .length property. The length property sets or returns the number of elements in an array. By knowing the number of elements in the array, you can tell if it is empty or not. An empty array will have 0 elements inside of it.
PHP empty() Function The empty() function checks whether a variable is empty or not. This function returns false if the variable exists and is not empty, otherwise it returns true.
An empty array is falsey in PHP, so you don't even need to use empty() as others have suggested. PHP's empty() determines if a variable doesn't exist or has a falsey value (like array() , 0 , null , false , etc).
An empty array evaluates to FALSE , any other array to TRUE (Demo):
Someday I've learned very smart solution here on SO
if(!array_filter($array)) {
//array contains only empty values
}
or even smarter one (if applicable):
if(!array_filter($array,'trim')) {
//array contains only empty values
}
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