PHP统计字符串里单词查询关键字

<?

function full_count_words($str) {

//返回完整数组，包含字符串里每个单词

$words = str_word_count($str,1);

$result = array();

foreach ($words as $w) {

$lw = strtolower($w);

//判断单词是否是第一次出现，是则设置为1，否则就增加1

if (!(isset($result[$lw]))) {

$result[$lw] = 1;

} else {

$result[$lw]++;

}

}

return $result;

}

?>

函数描述及例子

<?

$test = "Good luck to you,good by! me to ,good ,good";

$wordcount =2881064151 full_count_words($test);

//echo $wordcount['good'];

print_r($wordcount);

?>

查询关键字

PHP统计字符串里单词出现次数