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This article mainly explains "how php uses switch statements to achieve multiple values to match the same code block". Interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn how php uses the switch statement to achieve multiple values matching the same code block.

Let's talk about the format of the switch () statement first.

Switch (expression) {

Case match 1:

When match 1 matches the code executed successfully with the expression

Break

Case match 2:

When match 2 matches the code executed successfully with the expression

Break

Default:

If the case statement does not have the code that was successfully executed with the expression

}

It is important to understand how switch is executed. Switch statements are executed one by one (actually statements are followed by statements). No code was executed at the beginning. PHP starts executing the statement only when the value in a case statement matches the value of the switch expression, until the end of the switch segment or until the first break statement is encountered. If you do not write break at the end of the statement section of the case, PHP will continue to execute the statement segment in the next case.

Example:

The statement in one case can also be empty, which simply transfers control to the statement in the next case, knowing that the statement block of the next case is not empty, thus implementing multiple value matching agreement blocks:

Output the same statement when the value of $I is 1 or 2 or 3:

At this point, I believe you have a deeper understanding of "how php uses switch statements to achieve multiple values to match the same code block". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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