What are the functions of php tags?

php's tag functions include tag, tag, <%> tag, tag, tag, <%#> tag, etc. Detailed introduction: 1. The tag is used to wrap PHP code. The code in the tag will be parsed into PHP code by the server and executed on the server side; 2. tags, etc.

The operating environment of this tutorial: Windows 10 system, PHP8.1.3 version, Dell G3 computer.

PHP is a scripting language widely used in web development, and its tags are special characters used to identify PHP code. In PHP, there are various tags that serve different functions and purposes. This article will introduce PHP tags and their functions.

1. Tag:

This is the most commonly used tag in PHP, used to wrap PHP code. The code in the tag will be parsed by the server into PHP code and executed on the server side. This tag can be used in any PHP code, including variable declarations, function definitions, logical judgments, loops, etc.

2. Tag:

This tag is the abbreviation of , Used to output the value of a variable or expression. For example, will output the value of variable $name. This tag is usually used for simple output statements to make the code more concise.

3. <% %> Tag:

This tag is an ASP style tag in PHP, used to embed PHP code. Unlike the tag, the code in the <% %> tag does not need to end with a semicolon. This tag was supported in older PHP versions, but is deprecated in newer versions.

4. Tag:

This tag is used in HTML files Embed PHP code in. The code in this tag will be parsed by the server into PHP code and executed on the server side. This tag was supported in older PHP versions, but is deprecated in newer versions.

5. Tag:

This tag is used in HTML files Embed PHP code in. The code in this tag will be parsed by the server into PHP code and executed on the server side. This tag was supported in older PHP versions, but is deprecated in newer versions.

6. <%# %> Tag:

This tag is used to embed PHP code in ASP.NET. The code in this tag will be parsed by the server into PHP code and executed on the server side. This tag was supported in older PHP versions, but is deprecated in newer versions.

In addition to the tags listed above, PHP also supports some other special tags, such as <%php %>, <%$ %>, <%: % >etc., they have specific uses in specific development environments.

To sum up, PHP tags have the following functions:

1. Identify PHP code so that the server can identify and parse it for execution.

2. Output the value of a variable or expression and simplify the output statement.

3. Embed PHP code in HTML files to generate dynamic web pages.

4. Embed PHP code in ASP.NET to achieve integration with other technologies.

It should be noted that different tags may have different support in different PHP versions, so when using tags, you should choose according to the specific PHP version. In addition, in order to maintain the readability and maintainability of the code, it is recommended to follow certain coding standards when using tags.

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