In PHP programming, the double quotation mark "and the single quotation mark" is the string and the character expression form, then we want to output it how to do, below we see a simple output single double quotation mark instance bar.
Home we look at several ways to output double quotes
Method one.
Copy CodeThe code is as follows:
$str = ' I want to output double quotes ';
Echo $str;
The result is: I want to output double quotes "
Method Two
Copy CodeThe code is as follows:
$STR = "Output double quotation mark \" ";
Echo $str;
Result output Double quote "
Output single and double quotation marks
Copy CodeThe code is as follows:
$STR = "Output single quotation mark";
$str 1 = ' output single quotation mark \ ';
Echo $str;
?>
Single quotes in the middle of the literal inside of the variable will not be executed, double quotes in the middle of the variable can be executed, so in the absence of variables, the use of single quotes output character efficiency is much higher than double quotation marks.
For special characters, you can use the transfer character "\".
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