Difference between single quotes and double quotes in PHP

1. Variable expressions can be parsed in double quotes, but not in single quotes.

2. Double quotation marks will parse escape characters such as line breaks, but single quotation marks cannot

1<?PHP2$ Name= "Jack";3Echo'$ Namejones, you are a good \ t \ tguy <br>';4Echo"{$ Name} Jones, you are a good \ t \ tguy";5?>

Page output

$ Namejones, you are a good \ t \ tguy
Jackjones, you are a good guy

Here we can see the difference. We noticed that {} is used for {$ name} as the variable name delimiter, otherwise it will be parsed to the $ namejones variable, so that the variable cannot be found.

As for their good or bad, the benevolent sees the wise.