How can one check if the output of a function in PHP contains a value or not?

To check if the output of a function in PHP contains a value or not, you can use the `isset()` function to determine if a variable is set and is not NULL. You can assign the output of the function to a variable and then use `isset()` to check if it contains a value or not. 

// Assign the output of the function to a variable
$output = yourFunction();

// Check if the output contains a value
if(isset($output)){
    // Output contains a value
    echo "Output contains a value: " . $output;
} else {
    // Output is empty
    echo "Output is empty";
}

Keywords

PHP function output check value

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