如果单词有这些字母，我如何删除单词

Question

如果单词中有字母“ц”、“щ”、“ы”、“ь”，我必须删除单词。我为需要我创建了这个函数，但它运行缓慢。

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

您可以使用preg_grep 来获取包含正则表达式匹配的数组项，或不包含带有PREG_GREP_INVERT 标志的匹配项。

因此，要获取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 )

见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 )

见another PHP demo。

正则表达式看起来像/[цщы]/u，其中[...] 是一个字符类，它匹配模式中定义的任何字符（或字符范围），并且需要/u 修饰符，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。

Answer 2

我建议像这样重写你的函数（或根本不使用函数）：

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。

该模式描述的单词至少包含 3 个字符，没有字母 қ,ӣ,ғ,ҷ,ҳ,ӯ,Қ,Ӣ,Ғ,Ҷ,Ҳ,Ӯ。

请注意，您不能将strlen 用于多字节字符，因为它返回的是字节数，而不是字符数。