This is good because if you check the value of an unset variable, PHP will flag an error. Vulnerabilities, Security Hotspots, and Code Smells in your PHP code. This means you can, for example, check whether a variable is set and whether it is set to a certain valueâif the variable is not set, PHP will short-circuit the if statement and not check its value. This rule applies whenever an if statement is followed by one or more else if. we can perform a different action for different condition. See the below example:- Sample Program In the above program, if condition is false so elseif condition checked whether it’s true or false, if it’s true then it executed otherwise else condition executed. For example: if ($Age > 10 & $Age 10) will fail, so PHP will not bother checking it against 20. In PHP if else Conditional Statement used to check the conditional statement or test condition. The else-if statement is written after if and before else statement and it executes when if statement is false. One key thing to note is that PHP practices " if statement short-circuiting"âthis is where PHP will try to do as little conditional work as possible, so it basically stops checking conditional statements as long as it is sure it can stop. This stops PHP from trying to execute both the true and false actions. Here is a working example: = 18 & $Age = 50) ), and the code to be executed otherwise is in an else block. PHP if else Summary: in this tutorial, you’ll learn about the PHP if.else statement that executes a code block when a condition is true or another code block when the condition is false. This condition can be anything you choose, and you can combine conditions to make actions that are more complicated. PHP allows you to choose what action to take based on the result of a condition.
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