Q:
How to check whether a variable is empty in PHP
belongs to collection: PHP and MySQL Frequently Asked Questions
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Php programming
Use the PHP
empty()functionYou can use the PHP
empty()function to find out whether a variable is empty or not. A variable is considered empty if it does not exist or if its value equalsFALSE.Let's try out the following example to understand how this function basically works:
Note: The
empty()function does not generate a warning if the variable does not exist. That meansempty()is equivalent to!isset($var) || $var == false.