else if 语句和 else 语句一样,它延伸了 if 语句,else if 语句会根据不同的表达式来确定执行哪个语句块。 在 PHP 中也可以将 else if 这两个关键字合并在一起(如 elseif)来使用。 I am no PHP expert, so I don't know whether that's the correct way to say IF this OR that ELSE that or if there is another/better way to code it in PHP, but this would be an important distinction to those looking for OR conditions versus ELSE conditions. else: Else function works when the if, Extra if conditions fail in the program/code in PHP/any other Programming Language mostly. The code you can see in the example is meant to output the text Good day, bud! Any T-SQL statement can be executed conditionally using IF…ELSE.. Below figure explain IF…ELSE statement How if and else works. Aap Upper Dekh Sakte Hai PHP Nested If Else statement In Hindi Me Expression Ko Check Kar Rhe Hai or Uske Bad Us Statement ke Under Ek or Condition Check kar Rhe Hai And Uske Bad Ham Statement Ko print kar Rhe Hai |. You can test more than one condition by using 'AND' and 'OR' operators. In the example above, time (22) is greater than 10, so the first condition is false.The next condition, in the else if statement, is also false, so we move on to the else condition since condition1 and condition2 is both false - and print to the screen "Good evening". It executes one block of code if the specified condition is true and another block of code if the condition is false. PHP if Statement. C if else : The if else statement is used to conditionally execute a statement or a block of statements. Also covered else, elseif with examples. PHP uses if keyword to implement the decision control instruction. The If statement can be used to run different code depending on the value of the variable supplied to it. Use else if to specify a new condition to test, if the first condition is false Use switch to specify many alternative blocks of code to be executed The switch statement is described in the next chapter. All PHP conditionals and functions are recognized, such as ||, or, &&, and, is_array(), etc. ここではPHPの基本構文「if、else、elseif」を使った条件分岐について解説します。 if - 条件分岐 if、else、elseif とは、PHPスクリプトを条件によって振り分けるための制御文です。条件によって異なる処理を行う場合に利用し、頻繁に利用します。 Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, PHP, Python, Bootstrap, Java and XML. In the previous section, we discussed the if construct, which allows you to execute a piece of code if the expression evaluates to true. if/else can be used to create conditional blocks. PHP supports following three decision making statements − if...else statement − use this statement if you want to execute a set of code when a condition is true and another if the condition is not true. Every {if} must be paired with a matching {/if}. It's important that the "else" always come last and be treated as the default action. So you can see here from the PHP manual that there are three types of conditional statement that you can use. If-else statement is slightly different from if statement. To execute some block of code when the condition is true, and some other code is false, then we use the if..else statement. In the "IF Elseif Else" statement, first the compiler check if the "IF" condition is true.If it is true, the respective code will be executed.But when the "IF" condition is false, the compiler will check if the "elseif" condition is true.If is true, the respective code will be executed. If you purchase a product or service linked from this site, we may receive an "affiliate commission". In PHP we have the following conditional statements: if statement – use this statement to execute some code only if a specified condition is true; if…else statement – use this statement to execute some code if a condition is true and another code if the condition is false In the above syntax expression1 is checked first, if it evaluates to true then the program control goes to next if - else part otherwise it goes to the last else statement and executes statement_7, statement_8 etc.. But we can use some alternatives to if-else which are discussed below: Method 1: In this method, we will use classes in HTML file to achieve this. The syntactic meaning is slightly different (if you're familiar with C, this is the same behavior) but the bottom line is that both would result in exactly the same behavior. @Bruce: I've copied & pasted the code you show and tested it (with PHP 5.2.9). I'm only getting one "Hello World". The answer is neither.It's basically the first "rule" of python design principles. Firstly, if checks if something's the case. PHP Else Statement. {else} and {elseif} are also permitted. I like that!) PHP BasicPHP Syntax PHP Echo PHP Comments PHP Variables PHP Strings PHP Constants PHP Operators PHP Functions PHP If, Else, ElseIf PHP Switch PHP Arrays PHP While Loop PHP - Do While loop PHP For loop PHP Foreach loop PHP Break , Continue and Goto PHP Files PHP … Syntax Definition of if else. PHP provides elseif statement to address this problem. It works similar to else keyword, with a little difference. Most answers aren't really addressing the main point: which works better when you're looking at some code and there are lots of closing commands such as } } } } (which can be done with endif as well) and you want to know where they were open? See the following example. The process will continue until PHP hits an "else", which will be automatically executed at that point, or until the conditional statement terminates without an "else". If Else and Switch Case are control structures that let you execute code segments based on given conditions. – cregox Dec 15 '14 at 17:19 elseif statement − is used with the if...else statement to execute a … You can use conditional statements in your code to do this. w3resource. If. Are you sure you are not calling sayHello() a second time or doing something else to cause the "Hello World" to appear twice? Think that you are writing a PHP program for a store and you have some offers based on the age. If you are new in programming and php is one of your first languages them i suggest using AND and OR, because it increases readability and reduces confusion when you check back. – GreenMatt Feb 14 '10 at 2:45 And I'll talk you through if, else if, and else, and also through the conditional tags that WordPress provides you with. Within the if - else if expression2 evaluates true then statement_3, statement_4 will execute otherwise statement_5, statement_6 will execute. w3resource. The if control structures evaluate pipelines, not just values (values are a special case of a pipeline): {{if PIPELINE}} # Do something {{else if OTHER_PIPELINE}} # Do something else {{else}} # Default case {{end}} A pipeline evaluates to false if the result of the pipeline, or the value, is: a boolean false; a numeric zero. The PHP if-else statement executes whether the condition is true or false. PHP If-else Statement. Suppose I want to make a page that asks for the user’s name and password and if the username and password are wrong it displays welcome message otherwise unauthorization message. 3.If Elseif Else Statement. {if} statements in Smarty have much the same flexibility as PHP if statements, with a few added features for the template engine. No, We can not use if-else conditions in CSS as CSS doesn’t support logics. In php both AND, && and OR, || will work in the same way. Very often when you write code, you want to perform different actions for different conditions. The PHP If statement is used to test a condition and then based on the results, if the condition is TRUE then a particular block of code is executed otherwise if the result is FALSE then the block of code is ignored and nothing happens. PHP Tutorial PHP Introduction PHP Environment Setup PHP Basics PHP 'echo' and 'print' PHP Variable PHP Superglobal PHP Data type PHP String PHP Operators PHP If..Else..Elseif PHP Switch Statement PHP While loops PHP do..while loop PHP for loops PHP Arrays PHP Function PHP GET and POST Examples & QA PHP Examples PHP Question Answer Advance PHP includes conditional statements like the If statement. Example explained. We are disclosing this in accordance with the Federal Trade Commission's 16 CFR, Part 255: "Guides Concerning the Use of Endorsements and Testimonials in Advertising" and also in accordance to amazon associates programme operating agreement. If it is not, the code next to the else statement is executed as an alternative.. Let's see if else PHP statements in action to get a better idea. Only the first condition that equates to TRUE will be executed; all others will be ignored, even if they're also True. How if else Statement works in PHP? The hour (of the server) is 10, and will give the following message: Have a good day! ⚠️. We can enhance the decision-making process by an alternative, adding an else statement to if. There may be a series of cascaded if - else blocks which makes the program tedious. ; Once, either IF T-SQL statements or ELSE T-SQL statement … Conditions can be true or false, execute one thing when the condition is true, something else when the condition is false. There could be different ways to do it, 1) to read the username and password from xml file (wow! if else PHP statements execute certain code if the condition specified next to the if part proves true. More often than not, you also want to execute a different code snippet if the expression evaluates to false. Affiliate Links - Advertising Disclosure. ; If the condition evaluates to False, then T-SQL statements followed by ELSE keyword will be executed. Given an HTML file and we need to apply using if-else conditions in CSS. As the keyword indicates, elseif is combination of if and else keywords. PHP provides us IF - ELSE statements to write decision-making-code. Examples of if else Statement in PHP If the condition evaluates to True, then T-SQL statements followed by IF keyword will be executed. However, if the time was 14, our program would print "Good day." On the other hand, if the expression evaluates to false, it won't do anything. You use PHP If statements when you want your program to execute a block of code only if a Trifft eine Bedingung nicht zu, wird der Programm-Teil else abgearbeitet. PHP Conditional Statements. if: If function works when the conditions inside of the function are true else compiler will go to else condition if extra if the condition is not there at first. PHP if-else statement is executed whether condition is true or false. IF-ELSE Bedingungen mit Alternative. Nested If Else Statement in cpp Flow Chart. Im Beispiel wird die aktuelle Uhrzeit verglichen, ob es 12:00:00 ist, und dann entsprechender Text ausgegeben. Conditional logic of the code has multiple if conditions. In PHP, you can also write 'else if' (in two words) and the behavior would be identical to the one of 'elseif' (in a single word). × These build up the dynamic behavior of PHP. The if-else statement is different from if statement.