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private<\/span> $positive_words<\/span> =<\/span> array<\/span>(<\/span>'active'<\/span>,<\/span> 'activists'<\/span>,<\/span> ...<\/span>);<\/span><\/div> private<\/span> $negative_words<\/span> =<\/span> array<\/span>(<\/span>'absurd'<\/span>,<\/span> 'afraid'<\/span>,<\/span> ...<\/span>);<\/span> <\/div> <\/div>
/**<\/span><\/div> * Returns the number of positive and negative articles in the list<\/span><\/div> * @param array $articles The articles to analyse<\/span><\/div> */<\/span><\/div> public<\/span> static<\/span> function<\/span> getPositiveAndNegative<\/span>(<\/span>$articles<\/span>)<\/span><\/div> {<\/span><\/div> // keep a list of the amount of positive and negative articles<\/span><\/div> $positive<\/span> =<\/span> 0<\/span>;<\/span><\/div> $negative<\/span> =<\/span> 0<\/span>;<\/span><\/div> <\/div>
// analyse each article<\/span><\/div> foreach<\/span> (<\/span>$articles<\/span> as<\/span> $article<\/span>)<\/span> {<\/span><\/div> // get the body of the article<\/span><\/div> $body<\/span> =<\/span> strtolower<\/span>(<\/span>$article<\/span>-><\/span>typeSpecific<\/span>-><\/span>body<\/span>);<\/span><\/div> <\/div>
//count all the positive entries<\/span><\/div> foreach<\/span> (<\/span>Analyse<\/span>::<\/span>$positive_words<\/span> as<\/span> $word<\/span>)<\/span> {<\/span><\/div> $count<\/span> =<\/span> substr_count<\/span>(<\/span>$body<\/span>,<\/span> $word<\/span>);<\/span><\/div> if<\/span> (<\/span>$count<\/span> ><\/span> 0<\/span>)<\/span> $positive<\/span> +=<\/span> $count<\/span>;<\/span><\/div> }<\/span><\/div> <\/div>
//count all the negative entries<\/span><\/div> foreach<\/span> (<\/span>Analyse<\/span>::<\/span>$negative_words<\/span> as<\/span> $word<\/span>)<\/span> {<\/span><\/div> $count<\/span> =<\/span> substr_count<\/span>(<\/span>$body<\/span>,<\/span> $word<\/span>);<\/span><\/div> if<\/span> (<\/span>$count<\/span> ><\/span> 0<\/span>)<\/span> $negative<\/span> +=<\/span> $count<\/span>;<\/span><\/div> }<\/span><\/div> }<\/span><\/div> <\/div>
//return both numbers<\/span><\/div> return<\/span> array<\/span>(<\/span>$positive<\/span>,<\/span> $negative<\/span>);<\/span><\/div> }<\/span><\/div> <\/div>
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