Match specific words in a string and categorize them - php

Question

I'm pretty new to PHP so bear with me here. I'm trying to iterate through the words in a string of text, look for specific words, categorize them, and then count the number of times each word category was hit. I was able to do the easy part but I'm having problems counting the number of times each category is matched. Here's the main function that accepts my string:
public function matchThemeTest($query){
$marriageNum = 0;
$criminalNum = 0;
$contactNum = 0;
$keywords = array(
'background'=> array('category'=>'criminal'),
'marriage' => array('category'=>'marriage'),
'criminal' => array('category'=>'criminal'),
'arrest' => array('category'=>'criminal'),
'divorce' => array('category'=>'marriage'),
'person' => array('category'=>'contact'),
'contact' => array('category'=>'contact')
);
foreach (preg_split("/\s/", $query) as $word)
{
if (isset($keywords[$word]))
{
echo $keywords[$word]['category'];
if ($keywords[$word]['category'] == 'marriage') {
$marriageNum++;
}
echo $marriageNum;
}
}
//return reset($matches);
}
I've got a php fiddle setup here: http://phpfiddle.org/main/code/i4g-mdu that I've been playing around with. In it's current form, I can get the words into categories but I'm not sure how to count how many times each category gets matched. I feel like I need an additional loop or something simple to count but I'm not exactly sure where. Any advice is greatly appreciated. Thanks in advance.

Answer 1

You may need another array of data, to store the counts. Use an array like this:
$counts = array(
'criminal' => 0,
'marriage' => 0,
'contact' => 0
);
Then when you iterate through your foreach loop, you can use the $keywords[$word]['category'] as the key in $counts and increment it:
if(isset($keywords[$word]) {
$counts[$keywords[$word]['category']]++;
}
Then you can return the $counts array so the caller can use it to find out what the counts of each theme were:
return $counts;