Created
October 27, 2015 16:37
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Text to Keywords (start)
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function extractCommonWords($string){ | |
$stopWords = array('i','a','about','an','and','are','as','at','be','by','com','de','en','for','from','how','in','is','it','la','of','on','or','that','the','this','to','was','what','when','where','who','will','with','und','the','www'); | |
$string = preg_replace('/ss+/i', '', $string); | |
$string = trim($string); // trim the string | |
$string = preg_replace('/[^a-zA-Z0-9 -]/', '', $string); // only take alphanumerical characters, but keep the spaces and dashes too… | |
$string = strtolower($string); // make it lowercase | |
preg_match_all('/\b.*?\b/i', $string, $matchWords); | |
$matchWords = $matchWords[0]; | |
foreach ( $matchWords as $key=>$item ) { | |
if ( $item == '' || in_array(strtolower($item), $stopWords) || strlen($item) <= 3 ) { | |
unset($matchWords[$key]); | |
} | |
} | |
$wordCountArr = array(); | |
if ( is_array($matchWords) ) { | |
foreach ( $matchWords as $key => $val ) { | |
$val = strtolower($val); | |
if ( isset($wordCountArr[$val]) ) { | |
$wordCountArr[$val]++; | |
} else { | |
$wordCountArr[$val] = 1; | |
} | |
} | |
} | |
arsort($wordCountArr); | |
$wordCountArr = array_slice($wordCountArr, 0, 10); | |
return $wordCountArr; | |
} | |
} | |
$text = "This is some text. This is some text. Vending Machines are great."; | |
$words = extractCommonWords($text); | |
echo implode(',', array_keys($words)); |
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