Quick PHP question

Ringr · 07-26-2005, 06:20 PM

Hey guys,

I just picked up a book on PHP today.
The author does describe when to use single quotes ( ' ' ) and when to use double quotes ( " " ). Like he said to use double quotes when the variable $PHP_SELF was being used.

I'm a bit lost on it though and I was wondering if someone could help me out here on when it's a good time to use single quotes and when to use double quotes and what they should be used with.

Any help would be appreciated,
Thanks

-Andy

bmsterling · 07-26-2005, 06:59 PM

"" allows you to us multiple lines and '' does not.

U can get away with using both with out having any issues. Just depends on how you want things to look when you view the source in a browser.

unclekyky · 07-26-2005, 07:22 PM

double quotes parse variables.
single quotes do not

PHP Code:

  <?php

????: NamePros.com http://www.namepros.com/programming/110146-quick-php-question.html
$user = 'bob'; // uses single quotes because there is no variable

// hello, bob.

echo "hello, $user."; // the correct method would be: echo "hello, {$user}.";

// hello, $user.

echo 'hello, $user.';

?>

if you don't need to parse a variable in a string, use single quotes. otherwise use double quotes.

http://us3.php.net/types.string

Ringr · 07-27-2005, 01:44 AM

Aha, that makes more sense now.

Thank you guys,

-Andy

Porte · 07-27-2005, 04:53 AM

Although some people will prefer single quotes, you can still use a variable the following way

Quote:

echo 'Welcome, ' . $username;

Good luck.

Zubair1 · 08-20-2005, 05:24 AM

Hi ppl,

I just wanted to know if is it possible to parse variables with single quotes cause
i tried it and both work for i think single quote don't need to be escaped in
double quote and vise versa.

Amnezia · 08-20-2005, 05:35 AM

generally speaking you should always use double quotes with \ to escape special meaning

you can use single quotes but its messy and will cause problems in some situtations

07-26-2005, 06:20 PM	THREAD STARTER #1 (permalink)
Ringr Senior Member Join Date: Jul 2004 Posts: 1,383	Quick PHP question Hey guys, I just picked up a book on PHP today. The author does describe when to use single quotes ( ' ' ) and when to use double quotes ( " " ). Like he said to use double quotes when the variable $PHP_SELF was being used. I'm a bit lost on it though and I was wondering if someone could help me out here on when it's a good time to use single quotes and when to use double quotes and what they should be used with. Any help would be appreciated, Thanks -Andy

07-26-2005, 06:59 PM	#2 (permalink)
bmsterling New Member Join Date: Jul 2005 Posts: 5	"" allows you to us multiple lines and '' does not. U can get away with using both with out having any issues. Just depends on how you want things to look when you view the source in a browser. __________________ ***************************** Benjamin Sterling http://www.sterlingdesign.info http://www.webgraphds.com

07-26-2005, 07:22 PM	#3 (permalink)
unclekyky New Member Join Date: Sep 2003 Posts: 13	double quotes parse variables. single quotes do not PHP Code: `<?php ????: NamePros.com http://www.namepros.com/programming/110146-quick-php-question.html $user = 'bob'; // uses single quotes because there is no variable // hello, bob. echo "hello, $user."; // the correct method would be: echo "hello, {$user}."; // hello, $user. echo 'hello, $user.'; ?>` if you don't need to parse a variable in a string, use single quotes. otherwise use double quotes. http://us3.php.net/types.string

08-20-2005, 05:24 AM	#6 (permalink)
Zubair1 NamePros Regular Join Date: Mar 2005 Posts: 912	Hi ppl, I just wanted to know if is it possible to parse variables with single quotes cause i tried it and both work for i think single quote don't need to be escaped in double quote and vise versa. __________________ Live Support : Zubair11 [at] hotmail.com Free SEO Directory! \|\| Free Online TV \|\| Tech Blog Web Design & Web Development Services \|\| Reliable Web Hosting

08-20-2005, 05:35 AM	#7 (permalink)
Amnezia Professional Monkey Join Date: Jul 2005 Location: Escaped from the zoo Posts: 907	generally speaking you should always use double quotes with \ to escape special meaning you can use single quotes but its messy and will cause problems in some situtations __________________ Webmaster Words

07-27-2005, 01:44 AM	THREAD STARTER #4 (permalink)
Ringr Senior Member Join Date: Jul 2004 Posts: 1,383	Aha, that makes more sense now. Thank you guys, -Andy

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