Basic explanation of php code mark

This article mainly shares with you some basic knowledge about getting started with PHP and a basic explanation of PHP code marks. I hope it can help you.

PHP-Echo statement

echo is in PHP The output statement can output a string (the string is enclosed in double quotes).

The following code

<span style="font-size: 14px;"><?php echo "Hello world!";?><br/></span>

Note that there must be at least one space between the echo keyword and the string.

Calculation expression

We write echo 12*3 and the computer will calculate the result

String

A string is a word or sentence enclosed in double quotation marks, such as: "Hi, imooc!". You can use PHP language output to output this string, like this:

<span style="font-size: 14px;"><?php echo "Hi,imooc！";?><br/></span>

You can also use single quotes, like the following code:

<span style="font-size: 14px;"><?php echo &#39;Hi,imooc！&#39;;?><br/></span>

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

<span style="font-size: 14px;"><?php echo &#39;Hi,&#39;.&#39;imooc!&#39;;?><br/></span>

Note: Connectors can connect multiple strings. The above example is to connect a string Split into two small strings and then connect them with a connector.

Statement terminator

Yes, please note that in PHP programming, you need to add a semicolon at the end of each statement;

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Summary of basic syntax of PHP

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