Formatting Issue

[unemployment]

Please help me sort out the syntax for this

 

<?php

echo '<a href="/u/${user_info["username"]}"><img src="', getUserAvatar($user_info['username']), "\" class=\"avatar f_left small\" title=\"${user_info['display_name']}\" alt=\"${user_info['display_name']}\" /></a>"; 

?>

[xyph]

You have single quotes in your first echo argument.

 

The variable within won't get parsed.

[unemployment]

You have single quotes in your first echo argument.

 

The variable within won't get parsed.

 

Please explain in more detail.  I feel like I have single quotes in the second argument.

[btellez]

echo '<a href="/u/'. $user_info["username"] .'"><img src="'. getUserAvatar($user_info['username']) .'" class="avatar f_left small" title="'. $user_info['display_name'] .'" alt="'.$user_info['display_name'].'" /></a>'; 

// OR 

echo '<a href="/u/', $user_info["username"], '"><img src="', getUserAvatar($user_info['username']), '" class="avatar f_left small" title="', $user_info['display_name'], '" alt="', $user_info['display_name'], '" /></a>'; 

// OR wrapped in double quotes...

echo "<a href=\"/u/{$user_info["username"]}\"><img src=\"", getUserAvatar($user_info['username']), "\" class=\"avatar f_left small\" title=\"{$user_info['display_name']}\" alt=\"{$user_info['display_name']}\" /></a>"; 

 

Note:  that the comas and the periods are not doing the same thing, even though the output may be the same.

 

Although you can use single and double quotes, try to stick to one as your "outside" wrappers to minimize confusion.

[dweeber]

I tend to use single quotes for html output...  This allows me to use the double quotes for html elements without having to think about it much and place variables outside of the single quotes to get them to work properly like:

 

<?php
...

echo '<a href="/u/' . $user_info['username'] . '">
       <img src="' . getUserAvatar($user_info['username']) . '" 
        class="avatar f_left small" 
        title="' . $user_info['display_name'] . '" 
        alt="' . $user_info['display_name'] . '" /></a>'; 

?>

[xyph]

Singe and double quoted strings are different in PHP

 

Here's some reading

http://php.net/manual/en/language.types.string.php

[scootstah]

Single quotes output what is literally between them.

 

$foo = 'bar';

echo 'foo $foo';

 

So this would echo "foo $foo".

 

Double quotes will parse variables and functions within the string.

$foo = 'bar';

echo "foo $foo";

 

So this would echo "foo bar".

 

If you want to use variables inside single quotes you have to concatenate.

 

 

$foo = 'bar';

echo 'foo ' . $foo;

 

This would echo "foo bar".