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This article mainly explains "whether php can use if sentence". Friends who are interested may wish to have a look. The method introduced in this paper is simple, fast and practical. Next, let the editor take you to learn "can php use if sentences"?

This article operating environment: Windows7 system, PHP7.1 version, DELL G3 computer

Can't you use if for php?

PHP can use if.

The if structure is one of the most important features of many languages, including PHP, which allows code fragments to be executed conditionally. The if structure of PHP is similar to the C language:

As defined in the expressions chapter, expr is evaluated according to Boolean. If the value of expr is true,PHP, statement will be executed, and if the value is false-statement will be ignored. For more information about which values are considered false, see the convert to Boolean section.

If $an is greater than $b, the following example shows an is bigger than b:

You often need to execute more than one statement conditionally, and of course you don't need to add an if clause to each statement. You can put these statements into a statement group. For example, if $an is greater than $b, the following code displays an is bigger than b and assigns the value of $a to $b:

If statements can be infinitely nested in other if statements, which provides full flexibility for conditional execution of different parts of the program.

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