1 | initial version |
You can verify whether a variable exists and has a certain value in PHP using the following code:
if (isset($variable) && $variable == 'certain value') {
// Do something
}
This code first checks whether the variable exists using the isset()
function, and then checks whether its value is equal to the "certain value" using the ==
comparison operator. If both conditions are true, the code inside the if statement will execute.