Php – preg_replace: how to strip off all white space and

PHPpreg-replaceregexwhitespace

how do I strip off all white space and  ?

I have this as a input in a wrapper I create,

[b]       bold       [/b]

so before turning the text to bold, i want to strip off all white spaces and &nbsp, and turn it into [b]bold[/b],

$this->content = preg_replace("/\[(.*?)\]\s\s+(.*?)\s\s+\[\/(.*?)\]/", 
                "[$1]$2[/$3]", 
                $this->content);

but it does not work! can you help please?

Best Answer

There is no need for a regex based solution. You can simply use str_replace as:

$input = "[b] &nbsp; &nbsp; &nbsp; bold &nbsp; &nbsp; &nbsp; [/b]";
$input = str_replace(array(' ','&nbsp;'),'',$input);
echo trim($input); // prints [b]bold[/b]

Update

From the Wordpress documentation on wp_title, it appears that wp_title displays the title itself unless you pass false for the second parameter, in which case it returns it. So try:

<?php echo trim(wp_title('', false)); ?>

Make Vim show ALL white spaces as a character

As others have said, you could use

:set list

which will, in combination with

:set listchars=...

display invisible characters.
Now, there isn't an explicit option which you can use to show whitespace, but in listchars, you could set a character to show for everything BUT whitespace. For example, mine looks like this

:set listchars=eol:$,tab:>-,trail:~,extends:>,precedes:<

so, now, after you use

:set list

everything that isn't explicitly shown as something else, is then, really, a plain old whitespace.

As usual, to understand how listchars works, use the help. It provides great information about what chars can be displayed (like trailing space, for instance) and how to do it:

:help listchars

It might be helpful to add a toggle to it so you can see the changes mid editing easily (source: VIM :set list! as a toggle in .vimrc):

noremap <F5> :set list!<CR>
inoremap <F5> <C-o>:set list!<CR>
cnoremap <F5> <C-c>:set list!<CR>

Best Answer

Related Solutions

Php – Trim leading white space with PHP

Update

Make Vim show ALL white spaces as a character

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