what does isset() function do in php code example
Example 1: if exist php
if (isset($var)) {
// Code here
}
Example 2: what is isset in php
The isset() function checks whether a variable is set, which means that it has to be declared and is not NULL.
This function returns true if the variable exists and is not NULL, otherwise it returns false.
Example 3: php if isset
if (isset(true)) {
}