PHP echo inside the variable problem

echo '';

Why does the $row in value in this code use the word '. ' Wrap it up.

Reply content:

echo '';

Why does the $row in value in this code use the word '. ' Wrap it up.

[.]Strings can be stitched together in PHP!
For example$a = "zhangsan";echo $a.' nihao';
Will output Zhangsan Nihao

Children's shoes Don't you know PHP with dot stitching string?
$row is a variable.

Like in JavaScript.
'';

The "." Operator is used to concatenate two strings in PHP, and connecting two strings with the "+" operator in JavaScript is a meaning

A single quotation mark is a string that wraps before and after

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