php 去除 字符串_php字符串去掉中文

去掉字符串中的中文

$a = "河蟹社会afeowahgieawhjozf候蛇fawgwea维稳aghoiawghowi我日";

$result = preg_replace('/([\x80-\xff]*)/i','',$a);

var_dump($result);

[PHP]代码

try

{

$hostname = "localhost";

$dbname = "xxxx";

$username = "root";

$pw = "xxxx";

$pdo = new PDO ("mysql:host=$hostname;dbname=$dbname", "$username", "$pw");

$db->query("set names utf-8");

}

catch (PDOException $e)

{

echo "Failed to get DB handle: " . $e -> getMessage() . "\n";

exit;

}

$query = $pdo -> prepare("select id,store_image FROM store");

$query -> execute();

for($i = 0; $row = $query -> fetch(); $i++)

{

$new_file = preg_replace('/([\x80-\xff]*)/i', '',$row['store_image']);

$id=$row['id'];

$sql="update store set store_image='$new_file' where id=$id";

$pdo->exec($sql);

}

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