check if a php variable is set code example
Example 1: if exist php
if (isset($var)) {
// Code here
}
Example 2: isset in php
$age = 0;
// Evaluates as true because $age is set
if (isset($age)) {
echo '$age is set even though it is empty';
}
if (isset($var)) {
// Code here
}
$age = 0;
// Evaluates as true because $age is set
if (isset($age)) {
echo '$age is set even though it is empty';
}