Array word filter?

[matfish]

Hey,

 

got a comment/blog type thingy and in the users preferences they have the option to turn a bad language filter on/off.

 

Im just wondering the quickest way to implement this to view the output? You think put the words into an array and if the word filter is true, then how would i go through all the array of bad words and replace with *** and would this be quick or would it delay viewing the output?

 

Many thanks

[chocopi]

just use str_replace

 

~ Chocopi

[matfish]

Yeah, Im that far ahead - but you think its best to run an array thru all the words?

[matfish]

I wanted to do something like if "balls" then "b***s" kinda thing but with a list of bad language words...

[chocopi]

well I would use something like this:

 

<?php

$text = "I like balls with poop and a bit of bugger";

$lines = file("naughty_words.txt");

foreach($lines as $line)
{
list($find, $replace) = explode("=", $line);
$text = str_replace($find, $replace, $text);
}

?>

 

then in naughty_words.txt just store the info like

 

balls=b***s

poop=p**p

bugger=b****r

 

this should then give:

 

I like b***s with p**p and a bit of b****r

 

Hope that helps

 

~ Chocopi

[matfish]

Hey, thanks - seems to work fine and doesn't interfere with the speed of display (which is what i was worried about)

 

seems to work only with words that match (case sensitive) - meaning: buGGer is not the same as bugger which is in the list.. any ideas?

 

Thanks again

 

[chigley]

Use str_ireplace() instead of str_replace()

[matfish]

Hi, str_ireplace throw's a wobbly. Call to undefined function.

 

Also chocopi - it puts a line break after the word so after every bad word there is a new line...

 

Thanks for everyones help

[Zane]

you need a function that censors words first

--note this function passes by reference

function censorWord($word) {
  for($i=0, $i      if($i != 0 || $i != strlen($word)++)
        $word{$i} = "*";
  }
  return $word;
}

 

then do the same idea as before

$text = "I like balls with poop and a bit of bugger";

$lines = file("naughty_words.txt");

foreach($lines as $line) {
$text = str_replace($line, censorWord($line), $text);
}

 

but in your naugty.txt file just name all the words down the line you won't need the equals marks and such

just

 

balls

poop

bugger

etc

etc

etc

 

[matfish]

Hey thanks for the reply, but it dont work.

 

Text is just output the same ?

[matfish]

function BadWordFilter($text)
{
$bads = array (
	array("ass","a*s"),
	array("piss","p**s"),
	array("crap","c**p")
);

	for($i=0;$i<sizeof($bads);$i++) {
		$text = eregi_replace($bads[$i][0],$bads[$i][1],$text);
	}
	return $text;
}

 

The above woks ok, just wondering if reading from the txt file is quicker or via an array?

[rcorlew]

The reason str_ireplace throws a wobbly is because that function is only available in versions > 5.

 

I have a custom function  that replaces str_ireplace for versions < 5 if you would like.