php $know_js = false Įcho "I know Javascript. Great, now let's be more PHP specific and translate the above example to valid if/else statement syntax.
#Php if else tags code
It worth to mention that while, for and their derived are also called loops, because they execute a piece of code while the condition is met. foreach - executes a block of code for each element of an array.Instead, it allows adding different HTML tags inside the respective if and else blocks. PHP if else statement is not only used to specify some action or convey a message. PHP if Else Statement: Switching HTML Tags. for - executes a block of code a given number of times You can try this code with different numbers to check the workings of a nested PHP if else statement.do / while - executes a block of code once, and then repeats it as long as the condition is met.while - repeats a block of code as long as the condition is met.We will learn more about switch statements in a future tutorial. switch - executes a different piece of code depending on the value of a variable (or expression).if / elseif / else - do something different depending on different conditions.if / else - do something if the condition is evaluated to true and something else if not.if - do something if the condition is evaluated to true.phpĬool isn't it? PHP have the following conditional statements when it comes to performing different actions depending if a condition is
By the way, pseudo-code is a simplified way of writing natural language code without taking into consideration the programming-specific syntax. If not, just read this tutorial carefully because it will be useful when learning any other programming language.ĭid you paid attention to what I've just said? The upper paragraph contains a conditional statement. So if you already know some other programming language this will be an easy read. Do use the pattern if ( value = $variable_name ) to avoid possible mistakes.The if/else condition is the most simple form of conditional processing and you will find it in any programming language.Always use curly braces even if you have a single statement to execute in the if statement.The if statement executes a statement if a condition evaluates to true.Code language: JavaScript ( javascript ) Summary If you accidentally use the assignment operator (=), PHP will raise a syntax error instead: 
It doesn’t compare the value of the $checked variable with the 'off' value. This expression assigns the literal string 'off' to the $checked variable and returns that variable. However, the expression in the if statement is an assignment, not a comparison: $checked = 'off' Code language: PHP ( php ) This script shows a message if the $checked is 'off'. For example:
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