{"id":224,"date":"2021-03-08T23:30:10","date_gmt":"2021-03-08T23:30:10","guid":{"rendered":"https:\/\/phptutorial.net\/?page_id=224"},"modified":"2025-04-06T01:41:25","modified_gmt":"2025-04-06T01:41:25","slug":"php-if-elseif","status":"publish","type":"page","link":"https:\/\/www.phptutorial.net\/php-tutorial\/php-if-elseif\/","title":{"rendered":"PHP if elseif"},"content":{"rendered":"\n

Summary<\/strong>: in this tutorial, you’ll learn about the PHP if elseif<\/code> statement to execute code blocks based on multiple boolean expressions.<\/p>\n\n\n\n

Introduction to the PHP if elseif statement #<\/a><\/h2>\n\n\n\n

The if<\/a><\/code> statement evaluates one expression<\/code> and executes a code block if the expression<\/code> is true:<\/p>\n\n\n

<?php<\/span>\n\nif<\/span> (expression) {\n\tstatement;\n}<\/code><\/span>Code language:<\/span> PHP<\/span> (<\/span>php<\/span>)<\/span><\/small><\/pre>\n\n\n
<?php<\/span>\n\nif<\/span> (expression1) {\n\tstatement;\n} elseif<\/span> (expression2) {\n\tstatement;\n} elseif<\/span> (expression3) {\n\tstatement;\n}<\/code><\/span>Code language:<\/span> PHP<\/span> (<\/span>php<\/span>)<\/span><\/small><\/pre>\n\n\n
PHP evaluates the expression1<\/code> and execute the code block in the if<\/code> clause if the expression1<\/code> is true<\/code>.<\/p>\n\n\n\n
If the expression1<\/code> is false<\/code>, the PHP<\/code> evaluates the expression2<\/code> in the next elseif<\/code> clause. If the result is true<\/code>, then PHP executes the statement in that elseif<\/code> block. Otherwise, PHP evaluates the expression3<\/code>. <\/p>\n\n\n\n
If the expression3<\/code> is true<\/code>, PHP executes the block that follows the elseif<\/code> clause. Otherwise, PHP ignores it.<\/p>\n\n\n\n
Notice that when an if<\/code> statement has multiple elseif<\/code> clauses, the elseif<\/code> will execute only if the expression in the preceding if<\/code> or elseif<\/code> clause evaluates to false<\/code>.<\/p>\n\n\n\n
The following flowchart illustrates how the if elseif<\/code> statement works:<\/p>\n\n\n
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\"\"<\/figure>\n<\/div>\n\n\n
The following example uses the if elseif<\/code> statement to display whether the variable $x<\/code> is greater than $y<\/code>:<\/p>\n\n\n
<?php<\/span>\n\n$x = 10<\/span>;\n$y = 20<\/span>;\n\nif<\/span> ($x > $y) {\n\t$message = 'x is greater than y'<\/span>;\n} elseif<\/span> ($x < $y) {\n\t$message = 'x is less than y'<\/span>;\n} else<\/span> {\n\t$message = 'x is equal to y'<\/span>;\n}\n\necho<\/span> $message;<\/code><\/span>Code language:<\/span> PHP<\/span> (<\/span>php<\/span>)<\/span><\/small><\/pre>\n\n\n
Output:<\/p>\n\n\n
x is less than y<\/code><\/span>Code language:<\/span> PHP<\/span> (<\/span>php<\/span>)<\/span><\/small><\/pre>\n\n\n
The script shows the message x is less than y<\/code> as expected.<\/p>\n\n\n\n
PHP if elseif alternative syntax #<\/a><\/h2>\n\n\n\n
PHP also supports an alternative syntax for the elseif<\/code> without using curly braces like the following:<\/p>\n\n\n
<?php<\/span>\n\nif<\/span> (expression):\n\tstatement;\nelseif<\/span> (expression2):\n\tstatement;\nelseif<\/span> (expression3):\n\tstatement;\nendif<\/span>;<\/code><\/span>Code language:<\/span> PHP<\/span> (<\/span>php<\/span>)<\/span><\/small><\/pre>\n\n\n
In this syntax:<\/p>\n\n\n\n
Try it<\/a><\/p>\n\n\n\n
The if<\/code> statement can have one or more optional elseif<\/code> clauses. The elseif<\/code> is a combination of if<\/code> and else<\/a><\/code>:<\/p>\n\n\n