Using single quotes vs double quotes in PHP strings
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Briefly:
In double-quoted strings, variables are replaced by their values:
PHP Code:
$word = "Hello". echo "$word there!"
The above code will output:
Hello there!
Doing the same with single quotes:
PHP Code:
$word = "Hello". echo '$word there!'
...will print:
$word there!
Using single quotes where possible, will be slightly more efficient to process, because PHP doesn't have to search single quoted strings for variables.
I simply use templating system to output large strings or files . I find that it's so much quicker when you build a templating class to parse and output HTML so that the rest of your application can concentrate on the logic.
Try it. Building your own templating system and implementing it can be great fun as I am finding out now. It speeds up application development tremendously and helps keep the logic/code separate from the presentation (output/HTML).
Last edited by vharishankar; 07-11-2005 at 10:53 AM.
Originally posted by Hko Briefly:
In double-quoted strings, variables are replaced by their values:
PHP Code:
$word = "Hello". echo "$word there!"
The above code will output:
Hello there!
Doing the same with single quotes:
PHP Code:
$word = "Hello". echo '$word there!'
...will print:
$word there!
Using single quotes where possible, will be slightly more efficient to process, because PHP doesn't have to search single quoted strings for variables.
nice post. well explained...
just adding that this behaviour is pretty similar in script languages when you work with regular expressions...
regards
slackie1000
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