[RESOLVED] Finding a certain phrase in two variables?

Bannana97

Hi everyone.
I am making a search engine with ads, an I need some help.
I don't know how to word it, like the title is messed up, but I want a way to do this:

$keywords1 = "free, online, games"
$keywords2 = "online, survey, website"

So now, I need something to find out if something in keywords2 is also in keywords1...
I don't want to use strstr because you can only define one word in the phrase. I am looking for a code that goes through all of the keywords seperated by commas or spaces, and looks in the other keyword.

Thanks.

Imperialoutpost

Explode the strings into arrays and using in_array to check the keyword is in both arrays?

Would that work for you?

johanafm

I'd rather use array_intersect

Imperialoutpost

Sorry if I'm wrong Johanafm, cos I haven't had much experience with array_intersect, but if you use it then you're still going to have to use something like in_array to find out if the phrase you wanted is in the array returned by array_intersect?

Bannana97

Imperialoutpost;10958608 wrote:
Explode the strings into arrays and using in_array to check the keyword is in both arrays?

Would that work for you?

How do I do that? Sorry... Still haven't mastered PHP. 😛

Imperialoutpost

<?php

function matchKeywords($array1, $array2, $keyword) {

return ((in_array($keyword, $array1)) && (in_array($keyword, $array2))) ? true : false;

}

$keywords1 = "free, online, games";
$keywords2 = "online, survey, website";

// Break the strings into an array
$array1 = explode(', ', $keywords1); 
$array2 = explode(', ', $keywords2);

var_dump(matchKeywords($array1, $array2, 'online')); // Returns TRUE
var_dump(matchKeywords($array1, $array2, 'games')); // Returns FALSE

?>

johanafm

Imperialoutpost;10958616 wrote:
Sorry if I'm wrong Johanafm, cos I haven't had much experience with array_intersect, but if you use it then you're still going to have to use something like in_array to find out if the phrase you wanted is in the array returned by array_intersect?

Oh no, you are indeed correct, and if you are checking for just one single word, you might as well do it the way you do.

But, if you want a list of everything contained in both arrays, or want to check for multiple words I find this approach to be simpler.

$arr = array('one', 'two', 'three');
$arr2 = array('one', 'three', 'four');

$isect = array_intersect($arr, $arr2);
echo 'These are in both: ' . print_r($isect,1) . '<br/>';

# and for every check you want to do from now on, there's just one array to check against
foreach($words_to_check as $w) {
	if (in_array($w, $isect)) {
		echo $w . ' is in both.<br/>'
	}
}

Bannana97

Thanks you two!

I combined your codes and added some of my own to find that it works perfectly!
Thanks in advance.