Difference between PHP double quotes and single quotes

Variables in single quotes are not executed, and double quotes are executed. For example, $ namehello; echothe $ name; will output thehello, and if it is a single quotation mark $ namehello; echothe $ name; will output the main difference of the $ name is this. SyntaxHighlighter. all (); variables in single quotes are not executed, and double quotes are executed.

For example
$ Name = hello;
Echo "the $ name ";
Will output the hello

If it is a single quotation mark
$ Name = hello;
Echo the $ name;
The $ name

This is the main difference.