How PHP prints double quotes

In PHP programming double quotes "and single quotes" are strings and character representations, so we're going to output what does it do, let's look at a simple
Example of output single double quotes.

Home we see several ways to output double quotes
Method one.
*/
$str = ' I want to output double quotes ';
Echo $str;
/*

The result is: I want to output double quotes "

Method Two
*/
$STR = "Output double quotes" ";
Echo $str;

Result output double quotes "
Output single quotes almost like double quotes look at the example

$STR = "Output single quotes" "
$str 1 = ' output single decree ';

/*
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