Answers for "php check if a variable is empty"

php code to check if variable is null

if(empty($var1)){
    echo 'This line is printed, because the $var1 is empty.';
}

php check for empty string

if (empty($var)) {
    echo '$var is either 0, empty, or not set at all';
}

php check if string is empty

function strictEmpty($var) {

    // Delete this line if you want space(s) to count as not empty
    $var = trim($var);
    
    if(isset($var) === true && $var === '') {
    
        // It's empty
    
    }
    else {
    
        // It's not empty
    
    }

}