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<?php

// make a service class or trait or package with a format enum by country could be useful. Also if you add the functionality to implement it into Laravel. 
   
class VatService 
{

    function getVatId(string $hayStack, string $needle = '/\d+/', bool $validateCount = false, $count = 6): string
    {
        return (
                preg_match($needle, $hayStack, $matches) 
            
            && 
            
                (
                        $count == strlen($matches[0])) 
                    && 
                        $validateCount
                ) 
            ? 
                $matches[0] 
            : 
                throw new Exception('VaT number was not found : ' . $count . ' == ' . strlen($matches[0]) . '    ' . $matches[0]
        );
    }
}

$myString  = '(VAT code) ??a ch? (Address) 034372 350-352 V? V?n Ki?t, Ph??ng C? Giang';

echo getVatId(hayStack: $myString, validateCount: true, count: 6);

你是對的，我正在打電話。您應(yīng)該考慮對此進(jìn)行一些驗(yàn)證和錯(cuò)誤處理。也許這個(gè)例子有助于實(shí)現(xiàn)這一點(diǎn)。

$my_string  = "(VAT code) ??a ch? (Address) 034372 350-352 V? V?n Ki?t, Ph??ng C? Giang";
$pattern = "/\d+/";
preg_match($pattern, $my_string, $matches);
echo $matches[0]; //Outputs 034372

您可以使用 preg_match 來執(zhí)行此操作。如果將第三個(gè)參數(shù) ($matches) 傳遞給 preg_match，它將創(chuàng)建一個(gè)填充搜索結(jié)果的數(shù)組，并且 $matches[0] 將包含與完整模式匹配的第一個(gè)文本實(shí)例。

如果字符串中可能沒有數(shù)字，您可以使用如下 if 語句來識別這些情況：

if (preg_match($pattern, $my_string, $matches)) {
    echo $matches[0];
}
else {
    echo "No match found";
}

參見https://www.php.net/manual/ en/function.preg-match.php