此代码的行$wordCountArr[$val]['bytotal'] = $wordCountArr[$val]['count'] / $totalWords;
出现“非法偏移类型”错误。这是代码,以防任何人可以提供帮助:
<?php
function extractCommonWords($string)
{
$stopWords = array('i','a','about','an','and','are','as','at','be','by','com','de','en','for','from','how','in','is','it','la','of','on','or','that','the','this','to','was','what','when','where','who','will','with','und','the','www');
$string = preg_replace('/ss+/i', '', $string);
$string = trim($string); // trim the string
$string = preg_replace('/[^a-zA-Z0-9 -]/', '', $string); // only take alphanumerical characters, but keep the spaces and dashes too…
$string = strtolower($string); // make it lowercase
preg_match_all('/\b.*?\b/i', $string, $matchWords);
$matchWords = $matchWords[0];
$totalWords = count($matchWords[0]);
foreach ( $matchWords as $key=>$item ) {
if ( $item == '' || in_array(strtolower($item), $stopWords) || strlen($item) <= 3 ) {
unset($matchWords[$key]);
}
}
$wordCountArr = array();
if ( is_array($matchWords) ) {
foreach ( $matchWords as $key => $val ) {
$val = strtolower($val);
if ( !isset($wordCountArr[$val])) {
$wordCountArr[$val] = array();
}
if ( isset($wordCountArr[$val]['count']) ) {
$wordCountArr[$val]['count']++;
} else {
$wordCountArr[$val]['count'] = 1;
}
}
arsort($wordCountArr);
$wordCountArr = array_slice($wordCountArr, 0, 10);
foreach ( $wordCountArr as $key => $val) {
$wordCountArr[$val]['bytotal'] = $wordCountArr[$val]['count'] / $totalWords;
}
}
return $wordCountArr;
}
$text = "AES algo to encrypt files.";
$words = extractCommonWords($text);
echo implode(',', array_keys($words));
?>
答案 0 :(得分:2)
查看整个foreach循环:
将变量$wordCountArr
更改为$val
:
foreach ( $wordCountArr as $key => $val) {
$val['bytotal'] = $val['count'] / $totalWords;
}
希望它对你有所帮助。
答案 1 :(得分:1)
你应该在最后的foreach循环中使用$ key而不是$ val。
foreach ( $wordCountArr as $key => $val) {
$wordCountArr[$key]['bytotal'] = $wordCountArr[$key]['count'] / $totalWords;
}