Php details about the difference between single quotes and double quotes

Source: Internet
Author: User

$ Hello = "this is helloworld ";
$ Test = "{$ hello }";
$ Test = '{$ hello }';
Pstutorial: it is obvious that the double quotation marks will be iterated out. & nbsp; single quotation marks will remain unchanged.

In fact, when I was writing SQL statements, I saw a troublesome "'. $ name.'".

Use "'{$ name}'". If there are many, you do not need to use a lot of. Numbers for connection, and it is clear.

. Record

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