Differences in checking if a variable is not empty with !empty
Question
Is there a case where I will get a different result if I use if ($somevar) instead of if (!empty($somevar)) ?
Aren't these two doing the exact same thing?
1 answers
solution1
4 ACCPTED 2018-06-06 09:55:56
Not at all,
if ($somevar) – This generates a notice if $somevar is not set
if (!empty($somevar)) – This is functionally equivalent to if($somevar) , but doesn't generate a notice.
empty() does NOT produce E_NOTICE on undeclared variables
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.
Related Question
Checking if variable is empty
Checking if variable is set, not null and not empty
Checking for empty variable in PHPTAL condition
Checking if variable is not empty before WP_query
Checking if individual variable is empty from an array PHP
PHP if statement checking variable is empty issue
two different ways for checking if a variable is empty or not
PHP Correctly checking if a post variable is empty
php empty() or isset() checking more than 1 variable
Prevent undefined variable error when checking for empty variable
Related Tags