~~~
$a = "<a>河蟹社会afeowahgieawhjozf候蛇fawgwea维稳aghoiawghowi我日</a>";
$result = preg_replace('/([\x80-\xff]*)/i','',$a);
var_dump($result);
~~~
~~~
<?php
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);
}
/*
$it = new RecursiveDirectoryIterator("./avatar");
foreach(new RecursiveIteratorIterator($it) as $file)
{
echo $file . "\n";
$new_file = preg_replace('/([\x80-\xff]*)/i', '', $file);
rename($file, $new_file);
}
*/
~~~