PHP Code Flags Basic Explanation

This article mainly to share with you some basic knowledge of PHP Primer, PHP code logo Basic explanation, hope to help everyone.

Php-echo statements

ECHO is an output statement in PHP that can output strings (strings enclosed in double quotes).

The following code

<?php echo "Hello world!";? >

Note There must be at least one space between the Echo keyword and the string.

evaluating expressions

We write echo 12*3 the computer calculates the results.

String

A string is a word or a sentence enclosed in double quotation marks, for example: "hi,imooc! ”。 You can output this string in the PHP language output, like this:

<?php echo "hi,imooc! ";? >

You can also enclose it in single quotes, just like the following code:

<?php Echo ' hi,imooc! ';? >

You can connect two characters with a connector, like this:

<?php Echo ' Hi, '. ' Imooc! ';? >

Note: The connector can concatenate multiple strings, and the example above is to split a string into two small strings and connect them with a connector.

Statement Terminator

Yes, note that in PHP programming you need to include semicolons at the end of each statement;