How to generate excerpt with most searched words in PHP?

Question

Here is an excerpt function:

    function excerpt($text, $phrase, $radius = 100, $ending = \"...\") {
270             if (empty($text) or empty($phrase)) {
2         


        

Answer 1

function excerpt($text, $phrase, $radius = 100, $ending = "...") { 


     $phraseLen = strlen($phrase); 
   if ($radius < $phraseLen) { 
         $radius = $phraseLen; 
     } 

     $phrases = explode (' ',$phrase);

     foreach ($phrases as $phrase) {
             $pos = strpos(strtolower($text), strtolower($phrase)); 
             if ($pos > -1) break;
     }

     $startPos = 0; 
     if ($pos > $radius) { 
         $startPos = $pos - $radius; 
     } 

     $textLen = strlen($text); 

     $endPos = $pos + $phraseLen + $radius; 
     if ($endPos >= $textLen) { 
         $endPos = $textLen; 
     } 

     $excerpt = substr($text, $startPos, $endPos - $startPos); 
     if ($startPos != 0) { 
         $excerpt = substr_replace($excerpt, $ending, 0, $phraseLen); 
     } 

     if ($endPos != $textLen) { 
         $excerpt = substr_replace($excerpt, $ending, -$phraseLen); 
     } 

     return $excerpt; }