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73 lines
1.9 KiB
PHP
73 lines
1.9 KiB
PHP
<?php
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/**
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* AVE.cms
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*
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* @package AVE.cms
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* @version 3.x
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* @filesource
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* @copyright © 2007-2014 AVE.cms, http://www.ave-cms.ru
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*
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*/
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class Meta
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{
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private $_keyword_count = 10;
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public function __construct( $keyword_count = false )
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{
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if( (int) $keyword_count ) $this->_keyword_count = $keyword_count;
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}
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public function setKeywordCount( $keyword_count )
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{
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if( (int) $keyword_count ) $this->_keyword_count = $keyword_count;
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}
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public function generateMeta( $text )
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{
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$newarr = array ();
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$quotes = array ("\x22", "\x60", "\t", "\n", "\r", ",", "/", "¬", "#", ";", ":", "@", "~", "[", "]", "{", "}", "=", "+", ")", "(", "*", "^", "%", "$", "<", ">", "?", "!", '"');
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$fastquotes = array ("\x22", "\x60", "\t", "\n", "\r", '"', "\\", '\r', '\n', "/", "{", "}", "[", "]" );
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$text = str_replace( chr(9), ' ', $text );
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$text = str_replace( chr(10), ' ', $text );
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$text = str_replace( chr(13), ' ', $text );
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$text = str_replace( " ", " ", $text );
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$text = str_replace( '<br />', ' ', $text );
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$text = strip_tags( $text );
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$text = preg_replace('/ {2,}/',' ',$text);
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$text = preg_replace( "#&(.+?);#", "", $text );
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//$text = trim(str_replace( " ,", "", stripslashes( $text )));
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$text = preg_replace('/\[tag:(.+?)\]/', '', $text);
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$text = preg_replace('/\[mod_(.+?)\]/', '', $text);
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$text = str_replace( $fastquotes, '', $text );
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$text = str_replace( $quotes, ' ', $text );
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$arr = explode( " ", $text );
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foreach ( $arr as $word ) {
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if( mb_strlen( ($word) ) > 4 OR (mb_strtoupper($word)==$word) and mb_strlen( ($word) ) > 1) $newarr[] = $word;
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}
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$arr = array_count_values( $newarr );
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arsort( $arr );
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$arr = array_keys( $arr );
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$total = count( $arr );
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$offset = 0;
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$arr = array_slice( $arr, $offset, $this->_keyword_count );
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$return['keywords'] = implode( ", ", $arr );
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$return['description'] = trim(mb_substr( trim($text), 0, 220 ),'.').'.';
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return $return;
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}
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}
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