44 lines
1.8 KiB
PHP
44 lines
1.8 KiB
PHP
<?php
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function seokeywords($contents,$symbol=5,$words=70){
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$contents = @preg_replace(array("'<[\/\!]*?[^<>]*?>'si","'([\r\n])[\s]+'si","'&[a-z0-9]{1,6};'si","'( +)'si"),
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array("","\\1 "," "," "),strip_tags($contents));
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$rearray = array("~","!","@","#","$","%","^","&","*","(",")","_","+",
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"`",'"',"№",";",":","?","-","=","|","\"","\\","/",
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"[","]","{","}","'",",",".","<",">","\r\n","\n","\t","«","»");
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$adjectivearray = array("ые","ое","ие","ий","ая","ый","ой","ми","ых","ее","ую","их","ым",
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"как","для","что","или","это","этих",
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"всех","вас","они","оно","еще","когда",
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"где","эта","лишь","уже","вам","нет",
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"если","надо","все","так","его","чем",
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"при","даже","мне","есть","только","очень",
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"сейчас","точно","обычно"
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);
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$contents = @str_replace($rearray," ",$contents);
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$keywordcache = @explode(" ",$contents);
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$rearray = array();
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foreach($keywordcache as $word){
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if(strlen($word)>=$symbol && !is_numeric($word)){
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$adjective = substr($word,-2);
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if(!in_array($adjective,$adjectivearray) && !in_array($word,$adjectivearray)){
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$rearray[$word] = (array_key_exists($word,$rearray)) ? ($rearray[$word] + 1) : 1;
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}
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}
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}
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@arsort($rearray);
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$keywordcache = @array_slice($rearray,0,$words);
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$keywords = "";
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foreach($keywordcache as $word=>$count){
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$keywords.= ",".$word;
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}
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return substr($keywords,1);
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}
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?>
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