| 1 | <?php |
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| 2 | // Author prajwala |
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| 3 | // email m.prajwala@gmail.com |
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| 4 | // Date 12/04/2009 |
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| 5 | // version 1.0 |
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| 6 | |
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| 7 | class HtmlCutString{ |
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| 8 | function __construct($string, $limit){ |
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| 9 | // create dom element using the html string |
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| 10 | $this->tempDiv = new DomDocument; |
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| 11 | $this->tempDiv->loadXML('<div>'.$string.'</div>'); |
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| 12 | // keep the characters count till now |
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| 13 | $this->charCount = 0; |
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| 14 | $this->encoding = 'UTF-8'; |
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| 15 | // character limit need to check |
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| 16 | $this->limit = $limit; |
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| 17 | } |
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| 18 | function cut(){ |
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| 19 | // create empty document to store new html |
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| 20 | $this->newDiv = new DomDocument; |
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| 21 | // cut the string by parsing through each element |
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| 22 | $this->searchEnd($this->tempDiv->documentElement,$this->newDiv); |
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| 23 | $newhtml = $this->newDiv->saveHTML(); |
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| 24 | return $newhtml; |
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| 25 | } |
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| 26 | function deleteChildren($node) { |
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| 27 | while (isset($node->firstChild)) { |
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| 28 | $this->deleteChildren($node->firstChild); |
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| 29 | $node->removeChild($node->firstChild); |
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| 30 | } |
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| 31 | } |
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| 32 | function searchEnd($parseDiv, $newParent){ |
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| 33 | foreach($parseDiv->childNodes as $ele){ |
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| 34 | // not text node |
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| 35 | if($ele->nodeType != 3){ |
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| 36 | $newEle = $this->newDiv->importNode($ele,true); |
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| 37 | if(count($ele->childNodes) === 0){ |
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| 38 | $newParent->appendChild($newEle); |
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| 39 | continue; |
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| 40 | } |
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| 41 | $this->deleteChildren($newEle); |
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| 42 | $newParent->appendChild($newEle); |
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| 43 | $res = $this->searchEnd($ele,$newEle); |
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| 44 | if($res) |
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| 45 | return $res; |
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| 46 | else |
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| 47 | continue; |
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| 48 | } |
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| 49 | // the limit of the char count reached |
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| 50 | if(mb_strlen($ele->nodeValue,$this->encoding) + $this->charCount >= $this->limit){ |
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| 51 | $newEle = $this->newDiv->importNode($ele); |
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| 52 | $newEle->nodeValue = substr($newEle->nodeValue,0, $this->limit - $this->charCount); |
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| 53 | $newParent->appendChild($newEle); |
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| 54 | return true; |
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| 55 | } |
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| 56 | $newEle = $this->newDiv->importNode($ele); |
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| 57 | $newParent->appendChild($newEle); |
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| 58 | $this->charCount += mb_strlen($newEle->nodeValue,$this->encoding); |
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| 59 | } |
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| 60 | return false; |
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| 61 | } |
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| 62 | } |
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| 63 | ?> |
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