" " vs ' '

[nelson]

I sorta been wondering what the true difference to php is between "" and ''. in some cases you can use them interchangebly and in other places you cant. i like to thing that " and " refers to a string of text and ' and ' refer to a single character but this isnt always the case.


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[jacques]

Double quotes can be used so you can include a variable in your string:

Code:
$somevar = 'John';
echo "Hello $somevar, have a good day!";

Single quotes offer no such support.


Code:
$somevar = 'John';
echo 'Hello $somevar, have a good day!';

Would throw up an error.

When dealing with a straight string, no variables or anything, it's best to use single quotes because double quotes tells PHP to look for variables and parse them correctly. It saves PHP a little bit of time.


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