Single quotes VS double quotes

Single quotes VS double quotes in php

Single quotes VS double quotes in php

 single quotes slightly faster then double quotes  but both are use in different situation for example in single quotes you cannot output a variable like this

$a=6;
echo '$a';

this php script will be produce your variable is a string this is the output of upper script $a but now if use double quotes for this then the output will be correct

now the output of this script will be this 6 but if you want to output a simple strings then always use single quotes because its much faster to double quotes

output my name is shakil khan