Question

What difference does it makes when I use '' against "" ?

For example:

$example = 'Merry Christmas in Advance';
$eg = "Merry Christmas";

echo "$example";
echo '$example';


echo "$eg";
echo '$eg';

What would the output for each echo statements and what can we infer about '' vs "" in PHP ?

Answer 1

$example = 'Merry Christmas in Advance';
$eg = "Merry Christmas";

echo "$example";
echo '$example';

echo "$eg";
echo '$eg';

would produce:

Merry Christmas in Advance$exampleMerry Christmas$eg

Single quoted strings are handled literally. No special characters (such as \n) or variables are interpolated.

Double quoted strings will interpolate your variables and special characters and render them accordingly.