Question

如果在单词中有字母“ц”，“щ”，“ы”，“ь”，我必须删除单词。我创建这个函数是为了需要我，但它运作缓慢。

public function CheckToInsert($text)
{

 $xarfho = array("ц", "щ", "ы", "ь","қ","ӣ","ғ","ҷ","ҳ","ӯ","Қ","Ӣ","Ғ","Ҷ","Ҳ","Ӯ");

 foreach ($xarfho as $xarf) 
 {
     if (stripos($text,$xarf) !== false) 
     {
         return true;
     }
 }



 return false;

}

public function UnsetUncorrectWords($words)
{
    foreach ($words as $key => $value) 
    {
        if($this->CheckToInsert($value) == false) unset($words[$key]);
        if(strlen($value) < 3) unset($words[$key]);
    }

    return $words;
}

Answer 1

我建议重写你的功能（或完全没有使用功能）：

public function UnsetUncorrectWords($words)
{
    return preg_grep('~\A[^қӣғҷҳӯҚӢҒҶҲӮ]{3,}\z~u', $words);
}

preg_grep过滤与模式不匹配的数组项。

该模式描述了至少3个字符的单词，不带字母қ，ӣ，ғ，ҷ，ҳ，ӯ，Қ，Ӣ，Ғ，Ҷ，Ҳ，Ӯ。

请注意，您不能将strlen与多字节字符一起使用，因为这会返回字节数，而不是字符数。

Answer 2

您可以使用preg_grep来获取包含正则表达式匹配的数组项，或者不包含与PREG_GREP_INVERT标记匹配的数组项。

因此，要获得所有没有您选择的字母的项目，请使用

$xarfho = array("ц", "щ", "ы", "ь","қ","ӣ","ғ","ҷ","ҳ","ӯ","Қ","Ӣ","Ғ","Ҷ","Ҳ","Ӯ");
$wrds = array('Еыфвҷ','цӣвееп','аааа');
$pat = '/[' . implode("", $xarfho) . ']/u';
$res = preg_grep($pat, $wrds, PREG_GREP_INVERT);
// => Array (  [2] => аааа )

请参阅PHP demo

要获取带有"ц", "щ", "ы", "ь","қ","ӣ","ғ","ҷ","ҳ","ӯ","Қ","Ӣ","Ғ","Ҷ","Ҳ","Ӯ"字母的项目，请使用

$xarfho = array("ц", "щ", "ы", "ь","қ","ӣ","ғ","ҷ","ҳ","ӯ","Қ","Ӣ","Ғ","Ҷ","Ҳ","Ӯ");
$wrds = array('Еыфвҷ','цӣвееп','аааа');
$pat = '/[' . implode("", $xarfho) . ']/u';
$res = preg_grep($pat, $wrds);
// => Array ( [0] => Еыфвҷ [1] => цӣвееп )

请参阅another PHP demo。

正则表达式看起来像/[цщы]/u，其中[...]是字符类，它匹配模式中定义的任何字符（或字符范围）和{{1}修饰符是必需的，因为您的模式包含ASCII以外的字符，UNICODE修饰符将使正则表达式引擎正确解析模式和输入字符串。

如果单词有这个字母我怎么能删除单词

2 个答案: