Using Array in preg_replace_callback

[jasonbullard]

Hopefully someone can help me cause I am at wits end.  It is probably and easy solution but I am just tired and can't think.  What I am trying to achieve here is to have a function that calls another one through preg_replace_callback.

 

In the called function I need to take an array and search through a string.  If a match is found then I need to encapsulate the found item in some preset tags.  The array could contain hundreds of words but I need it to be as fast as possible and I figured this was the best method if it can be done.

 

$myarray = array("one", "two", "three", "four");

preg_replace_callback($myarray, create_function('&$matches', '[start=".$matches[0]."]'), $str);

 

Now I have tried to remove the create_function and put it in its own but that does not work either.  Any help is appreciated.

 

Thanks,

Jason

[BlueSkyIS]

try removing ampersand?

 

'&$matches'

 

becomes

 

'$matches'

 

also: there is no return in your function. you may need one. e.g.,

 

'return "[start=\".$matches[0].\"]"'

[jasonbullard]

I have tried that and here is a trimmed down version of my code.

 

function start($str = '')
{
	$str = preg_replace_callback("the_regex_here", array($this, 'replace_whole'), $str);

	return $str;
}

function replace_whole(&$match)
{
	$return = '';

	$return = preg_replace_callback($this->reserved, array($this, 'replace_word'), $match[2]);

	return $return;
}

function replace_word($match)
{
	print_r($match);
}

 

Couple of things to note is that I call function start and that callback works.  In replace_whole that is the one that does not work.  Also, $match[2] is the correct parameter to be searched.  Everything works but the function replace_word does not seem to be executing at all.

[BlueSkyIS]

fyi, i'm new to preg_replace_callback, but i'll try to help.

 

I assume $this->reserved is a string??

 

is an array a valid second parameter for preg_replace_callback? my understanding is that it should be a function name.

[jasonbullard]

Thats cool.  I am just at wits end.  I am thinking this isn't possible but I will keep trying.

 

$this->reserved is actually an array of strings

 

$this->reserved = array("one", "two", "three", "four");

 

Because it is contained in a class the second parameter must be an array of $this, 'function_name'.  It would make it so much easie if they had a str_replace_callback. 

[Jessica]

You could write one

[BlueSkyIS]

Research has verified the need to provide an array for a class function call. However, an example on this page uses 'self' instead of $this:

 

http://us.php.net/preg_replace_callback,

 

$output = preg_replace_callback($pattern, array('self', 'do_something_callback'), $input);

[jasonbullard]

You could write one

 

Got any suggestions on where to start?  I am sure it contains a for or foreach loop maybe or some form of callback?

 

@BlueSkyIS,

 

Yeah, there a couple of ways to actually call it but I don't think there is an actual documented difference.  But, I will try it anyway just cause I am done.. 

[effigy]

How about arraying the create_functions first, then passing that array to preg_replace_callback?