70 lines
1.9 KiB
Markdown
70 lines
1.9 KiB
Markdown
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---
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title: PHP Switch
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---
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## PHP Switch
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The `switch` statement in PHP is similar to a series of `if ` statements on same expression. The `switch` statement is used to execute different actions at different conditions. The Syntax of the `switch` statement is follows
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```
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switch (expression) {
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case label1:
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// code block to be executed if there is a match with result of expression
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break;
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case label2:
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// code block to be executed if there is a match with result of expression
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break;
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case label3:
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// code block to be executed if there is a match with result of expression
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break;
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default:
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// code block to be executed if there is no match with result of expression
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}
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```
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When we run the program , the expression inside the `switch` statement is evaluated. The result of that expression is checked with corresponding labels if there is a match then corresponding `case` block is executed. If no match is found with any of the case statements, only the block of code following the `default` are executed.
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Illustration of `switch` statement with an example
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```
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<?php
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$i = 1
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switch ($i) {
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case 0:
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echo "i equals 0";
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break;
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case 1:
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echo "i equals 1";
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break;
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case 2:
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echo "i equals 2";
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break;
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}
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?>
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```
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The `switch` statement can also be used without `break` statement. In that case , statements after the matched cases will be executed. Below is an usage of `switch` statement without `break` statement.
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```
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<?php
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switch ($i) {
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case 0:
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echo "i equals 0";
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case 1:
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echo "i equals 1";
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case 2:
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echo "i equals 2";
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}
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?>
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/*output --> i equals 0i equals 1i equals 2 */
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```
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#### More Information:
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[Switch Statement - PHP Documentation](http://php.net/manual/en/control-structures.switch.php)
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[PHP5 Switch - W3Schools](https://www.w3schools.com/php/php_switch.asp)
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